Persea, Miller, 1754

De Moraes, Pedro L. R. & Trinca, Mayra D., 2022, Foliar cuticles of species of Persea subg. Eriodaphne (Lauraceae), Phytotaxa 549 (3), pp. 255-300 : 274-276

publication ID

https://doi.org/ 10.11646/phytotaxa.549.3.1

DOI

https://doi.org/10.5281/zenodo.6638759

persistent identifier

https://treatment.plazi.org/id/03E39C54-7B14-5A0A-C4B3-F064FA13F523

treatment provided by

Plazi

scientific name

Persea
status

 

Key to the American species of Persea View in CoL , based on foliar cuticle characters

1. Leaves glabrous on both surfaces.......................................................................................................................................................2

– Leaves pubescent at least in one surface ..........................................................................................................................................12

2. Surface of epidermal periclinal walls flat...........................................................................................................................................3

– Surface of epidermal periclinal walls protruding upward to papillose...............................................................................................7

3. Overall shape of the stomatal complex broadly circular to rhombic, stomatal surface type RH2 (rhombic, protruding and regular margin)................................................................................................................................................................................ P. jariensis View in CoL

– Overall shape of the stomatal complex circular to broadly circular to elliptic, stomatal surface type AF (almost flat) to BCP3 (subsidiary cells broadly circular, protruding but interrupted at both ends of the aperture field) to NCP4 View Materials (narrowly circular, protruding but interrupted at both ends of the aperture field) ............................................................................................................4

4. Stomatal ledge bat-shaped..................................................................................................................................................................5

– Stomatal ledge lip-shaped or butterfly-shaped ...................................................................................................................................6

5. Epidermal non-specialised cells strictly of almost equal size on both surfaces, anticlinal walls straight to slightly curved on both surfaces.............................................................................................................................................................................. P. borbonia View in CoL

– Epidermal non-specialised cells of almost equal size on both surfaces to larger adaxially, anticlinal walls straight to slightly curved to undulate adaxially........................................................................................................................................................... P. longipes View in CoL

6. Epidermal non-specialised cells strictly larger adaxially, anticlinal walls strictly straight adaxially ................................... P. pumila

– Epidermal non-specialised cells of almost equal size on both surfaces to larger adaxially, anticlinal walls straight to slightly curved on both surfaces..................................................................................................................................................................... P. venosa View in CoL

7. Surface appearance of epidermal periclinal walls strictly papillose .................................................................................. P. povedae

– Surface appearance of epidermal periclinal walls predominantly protruding upward.......................................................................8

8. Epidermal non-specialised cells strictly larger adaxially ...................................................................................................................9

– Epidermal non-specialised cells of almost equal size on both surfaces to larger adaxially .............................................................10

9. Anticlinal walls straight to slightly curved on both surfaces, stomatal surface type NCP4 View Materials .................................................. P. glabra View in CoL

– Anticlinal walls strictly straight adaxially, stomatal surface type AF, BCP3 or NCP4 View Materials ......................................................... P. pumila

10.== Stomatal ledge bat-shaped, overall shape of the stomatal complex broadly circular to elliptic, stomatal surface type BCP3 or NCP4 View Materials .................................................................................................................................................................................. P. longipes View in CoL

–== Stomatal ledge lip-shaped to butterfly-shaped .................................................................................................................................11

11.== Anticlinal walls strictly straight adaxially, stomatal ledge lip-shaped ................................................................................ P. cuneata View in CoL

–== Anticlinal walls straight to slightly curved on both surfaces, stomatal ledge lip-shaped to butterfly-shaped ...................... P. venosa View in CoL

12. Leaves densely to completely covered by trichomes abaxially........................................................................................................13

– Leaves not densely to completely covered by trichomes abaxially .................................................................................................34

13. Epidermal non-specialised cells of almost equal size on both surfaces to larger abaxially .............................................................14

– Epidermal non-specialised cells of almost equal size on both surfaces to larger adaxially .............................................................15

14. Anticlinal walls straight to slightly curved on both surfaces, stomatal surface type BCP3 or NCP4 View Materials , average stomatal index 0.13 ± 0.036 .......................................................................................................................................................................................... P. alba View in CoL

– Anticlinal walls strictly straight adaxially, stomatal surface type AF, BCP3 , NCP4 View Materials or RH3 (rhombic, protruding, irregular margin), average stomatal index 0.20 ± 0.035 ..................................................................................................................................... P. aurata View in CoL

15. Epidermal non-specialised cells strictly of almost equal size on both surfaces...............................................................................16

– Epidermal non-specialised cells of almost equal size on both surfaces to larger adaxially .............................................................26

16. Surface of epidermal periclinal walls strictly flat........................................................................................................ P. benthamiana View in CoL

– Surface of epidermal periclinal walls flat to protruding to papillose ...............................................................................................17

17. Surface of epidermal periclinal walls strictly protruding upward ....................................................................................................18

– Surface of epidermal periclinal walls flat to protruding, or protruding to papillose........................................................................20

18. Anticlinal walls strictly straight adaxially, straight to slightly curved abaxially, stomatal ledge lip-, butterfly-, and/or bat-shaped, overall shape of the stomatal complex broadly circular to elliptic to rhombic, stomatal surface type BCP3 or NCP4 View Materials ....................... ............................................................................................................................................................................. P. pseudofasciculata

– Anticlinal walls straight to slightly curved adaxially, strictly straight or straight to slightly curved abaxially, stomatal ledge lipshaped...............................................................................................................................................................................................19

19. Overall shape of the stomatal complex circular to elliptic, stomatal surface type CP (circular and protruding forming a symmetric circle) or NCP4 View Materials ..................................................................................................................................................................... P. sericea View in CoL

– Overall shape of the stomatal complex broadly circular to rhombic, stomatal surface type BCP3 or NCP4 View Materials .................... P. vesticula View in CoL

20. Surface of epidermal periclinal walls flat to protruding...................................................................................................................21

– Surface of epidermal periclinal walls protruding to papillose................................................................................... P. rufotomentosa

21. Stomatal ledge strictly lip-shaped, overall shape of the stomatal complex broadly circular to elliptic, stomatal surface type BCP3 or NCP4 View Materials , average stomatal index 0.17 ± 0.03......................................................................................................................... P. fusca View in CoL

– Stomatal ledge lip- to butterfly- or bat-shaped, overall shape of the stomatal complex circular to broadly circular to elliptic to rhombic, stomatal surface type AF, BCP3 , NCP4 View Materials or RH3, average stomatal index different .........................................................22

22. Stomatal ledge strictly bat-shaped, overall shape of the stomatal complex broadly circular, stomatal surface type AF or BCP3 , average stomatal index 0.18 ± 0.04 ................................................................................................................................ P. meridensis View in CoL

– Stomatal ledge of another type, average stomatal index different ...................................................................................................23

23. Stomatal ledge lip- to butterfly-shaped, overall shape of the stomatal complex broadly circular to elliptic, stomatal surface type AF, BCP3 or NCP4 View Materials , average stomatal index 0.16 ± 0.02 ............................................................................................................... P. fulva View in CoL

– Stomatal ledge lip- to bat-shaped, overall shape of the stomatal complex circular to broadly circular to elliptic to rhombic, average stomatal index of another value........................................................................................................................................................24

24. Stomatal surface type AF, NCP4 View Materials or RH3, average stomatal index 0.14 ± 0.0041 ....................................................... P. weberbaueri View in CoL

– Stomatal surface type BCP3 or AF to NCP4 View Materials , average stomatal index 0.19.....................................................................................25

25. Overall shape of the stomatal complex broadly circular, stomatal surface type BCP3 , average stomatal index 0.19 ± 0.01.............. ............................................................................................................................................................................................ P. jenmanii View in CoL

– Overall shape of the stomatal complex rhombic to elliptic, stomatal surface type AF or NCP4 View Materials , average stomatal index 0.19 ± 0.02 ...................................................................................................................................................................................... P. obovata

26. Epidermal non-specialised cells strictly larger adaxially .................................................................................................................27

– Epidermal non-specialised cells of almost equal size on both surfaces to larger adaxially .............................................................30

27. Stomatal ledge butterfly-shaped, average stomatal index 0.21 ± 0.01............................................................................. P. fuliginosa View in CoL

– Stomatal ledge bat-shaped, average stomatal index of another value ..............................................................................................28

28. Stomatal surface type BCP3 , average stomatal index 0.17 ± 0.03.................................................................................. P. ferruginea View in CoL

– Stomatal surface type NCP4 View Materials to RH3, average stomatal index of another value ..............................................................................29

29. Overall shape of the stomatal complex circular to elliptic, average stomatal index 0.16 ± 0.01................................. P. perseiphylla

– Overall shape of the stomatal complex broadly circular to rhombic, average stomatal index 0.08 ± 0.0015......................... P. ruizii

30. Stomatal ledge lip- to butterfly-shaped, overall shape of the stomatal complex broadly circular to rhombic, stomatal surface type LP1 or NCP4 View Materials , average stomatal index 0.18 ± 0.03 ........................................................................................................ P. willdenovii View in CoL

– Stomatal ledge strictly lip- or lip- to bat-shaped, average stomatal index different.........................................................................31

31. Overall shape of the stomatal complex strictly elliptic, stomatal surface type AF or NCP4 View Materials , average stomatal index 0.21 ± 0.0075. ...................................................................................................................................................................................... P. pedunculosa

– Overall shape of the stomatal complex circular to broadly circular to elliptic, stomatal surface type AF, BCP3 or NCP4 View Materials , average stomatal index different ....................................................................................................................................................................32

32. Overall shape of the stomatal complex circular to elliptic, stomatal surface type AF or NCP4 View Materials , average stomatal index 0.16 ± 0.01 ...................................................................................................................................................................................... P. chamissonis View in CoL

– Overall shape of the stomatal complex broadly circular, stomatal surface type AF and/or BCP3 , average stomatal index different. ..........................................................................................................................................................................................................33

33. Stomatal surface type BCP3 , average stomatal index 0.14 ± 0.01....................................................................................... P. humilis View in CoL

– Stomatal surface type AF to BCP3 , average stomatal index 0.10 ± 0.01............................................................................... P. lingue View in CoL

34. Surface of epidermal periclinal walls papillose................................................................................................................................35

– Surface of epidermal periclinal walls non papillose.........................................................................................................................38

35. Anticlinal walls curved to undulate adaxially, curved abaxially......................................................................................... P. croizatii View in CoL

– Anticlinal walls strictly straight or straight to slightly curved adaxially, straight to slightly curved abaxially (when visible) .......36

36. Stomatal ledge lip-shaped, overall shape of the stomatal complex elliptic................................................................... P. microneura

– Stomatal ledge bat-shaped, overall shape of the stomatal complex broadly circular.......................................................................37

37. Stomatal surface type NCP4 View Materials , average stomatal index 0.06 ± 0.02........................................................................... P. areolatocostae View in CoL

– Stomatal surface type BCP3 , average stomatal index unknown (cells not counted) .................................................. P. chrysophylla View in CoL

38. Surface of epidermal periclinal walls flat.........................................................................................................................................39

– Surface of epidermal periclinal walls flat, protruding or papillose..................................................................................................40

39. Anticlinal walls straight adaxially, stomatal ledge bat-shaped, overall shape of the stomatal complex broadly circular, stomatal surface type BCP3 or NCP4 View Materials , average stomatal index 0.17 ± 0.01......................................................................................... P. albida View in CoL

– Anticlinal walls curved to undulate adaxially, stomatal ledge lip-shaped to bat-shaped, overall shape of the stomatal complex elliptic, stomatal surface type AF or NCP4 View Materials , average stomatal index 0.20 ± 0.02............................................................ P. buchtienii View in CoL

40. Epidermal non-specialised cells larger adaxially .............................................................................................................................41

– Epidermal non-specialised cells equal size on both surfaces or almost equal to larger adaxially ...................................................45

41. Anticlinal walls strictly undulate adaxially ........................................................................................................................ P. palustris

– Anticlinal walls straight to slightly curved to undulate adaxially ....................................................................................................42

42. Anticlinal walls straight to undulate adaxially, curved abaxially, average stomatal index 0.27 ± 0.02 ......................... P. schiedeana

– Anticlinal walls strictly straight or straight to curved on both surfaces, average stomatal index different .....................................43

43. Stomatal ledge butterfly-shaped, overall shape of the stomatal complex circular to elliptic, stomatal surface type NCP4 View Materials , average stomatal index 0.17 ± 0.02 ........................................................................................................................................ P. veraguasensis View in CoL

– Stomatal ledge lip-shaped, overall shape of the stomatal complex broadly circular to rhombic, stomatal surface type BCP3 , NCP4 View Materials or RH3, average stomatal index same or different ...........................................................................................................................44

44. Overall shape of the stomatal complex strictly broadly circular, stomatal surface type BCP3 or NCP4 View Materials , average stomatal index 0.17 ± 0.02.............................................................................................................................................................................. P. haenkeana View in CoL

– Overall shape of the stomatal complex broadly circular to rhombic, stomatal surface type BCP3 or RH3, average stomatal index 0.19 ± 0.02................................................................................................................................................................ P. donnell-smithii View in CoL

45. Surface of epidermal periclinal walls strictly protruding upward ....................................................................................................46

– Surface of epidermal periclinal walls flat to protruding or protruding to papillose.........................................................................49

46. Stomatal ledge bat-shaped, overall shape of the stomatal complex broadly circular to elliptic, stomatal surface type BCP3 or NCP4 View Materials , average stomatal index 0.13 ± 0.02 ................................................................................................................................. P. liebmannii View in CoL

– Stomatal ledge strictly lip-shaped or lip-shaped to butterfly-shaped, overall shape of the stomatal complex strictly elliptic or circular to elliptic, stomatal surface appearance type NCP4 View Materials , average stomatal index different ......................................................47

47. Stomatal ledge lip- to butterfly-shaped, overall shape of the stomatal complex circular to elliptic, average stomatal index 0.16 ± 0.02 ................................................................................................................................................................................... P. peruviana

– Stomatal ledge strictly lip-shaped, overall shape of the stomatal complex strictly elliptic, average stomatal index different........48

48. Anticlinal walls strictly straight adaxially, average stomatal index 0.21 ± 0.01 .......................................................... P. oblongifolia

– Anticlinal walls straight to curved adaxially, average stomatal index 0.21 ± 0.03 .................................................... P. psammophila

49. Surface of epidermal periclinal walls flat to protruding...................................................................................................................50

– Surface of epidermal periclinal walls protruding to papillose..........................................................................................................56

50. Stomatal ledge bat-shaped................................................................................................................................................................51

– Stomatal ledge various .....................................................................................................................................................................52

51. Anticlinal walls straight adaxially, average stomatal index 0.26 ± 0.03 ......................................................................... P. americana View in CoL

– Anticlinal walls straight to curved on both surfaces, average stomatal index 0.20 ± 0.01 ................................................. P. julianae View in CoL

52. Stomatal ledge strictly lip-shaped, overall shape of the stomatal complex broadly circular to rhombic, average stomatal index 0.17 ± 0.02.................................................................................................................................................................................. P. punctata

– Stomatal ledge lip-shaped to butterfly-shaped or bat-shaped...........................................................................................................53

53. Overall shape of the stomatal complex elliptic, average stomatal index 0.16 ± 0.03 ............................................................ P. caesia View in CoL

– Overall shape of the stomatal complex broadly circular to elliptic, average stomatal index different ............................................54

54. Stomatal ledge butterfly-shaped to bat-shaped, average stomatal index 0.18 ± 0.03 ............................................................ P. rigida

– Stomatal ledge lip-shaped to bat-shaped, average stomatal index different.....................................................................................55

55. Overall shape of the stomatal complex broadly circular, stomatal surface type BCP3 , average stomatal index 0.21 ± 0.0044.......... ......................................................................................................................................................................................... P. hypoleuca View in CoL

– Overall shape of the stomatal complex broadly circular to elliptic, stomatal surface type AF, BCP3 or NCP4 View Materials , average stomatal index 0.19 ± 0.03 ................................................................................................................................................................ P. meziana View in CoL

56. Stomatal ledge lip-shaped to bat-shaped, overall shape of the stomatal complex elliptic, average stomatal index 0.18 ± 0.01 ......... ............................................................................................................................................................................................ P. caerulea View in CoL

– Stomatal ledge lip-shaped, overall shape of the stomatal complex circular to broadly circular, average stomatal index 0.16 ± 0.03 ........................................................................................................................................................................................... P. fastigiata View in CoL

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