Anemia

Smith, Alan R. & Kessler, Michael, 2017, Prodromus of a fern flora for Bolivia. XIII. Anemiaceae, Phytotaxa 329 (1), pp. 80-86 : 81-82

Key to the Bolivian species of Anemia

1 Fronds holodimorphic; blade segments ca. 0.5 mm wide ............................................................................................. A. buniifolia

– Fronds hemidimorphic; blade segments> 1 mm wide ...................................................................................................................... 2

2 Fertile pinnae held horizontally or inclined, not fully erect ............................................................................................................. 3

– Fertile pinnae held erect ................................................................................................................................................................... 5

3 Fertile pinnae held horizontally; leaves forming flat, appressed rosettes, less than 3 cm long; blades simple or 1-pinnate at bases. ............................................................................................................................................................................................ A. elegans

– Fertile pinnae inclined; leaves erect, 10–25 cm long; blades bipinnate ........................................................................................... 4

4 Fertile pinnae usually petiolate to 1/5 their length ............................................................................................................. A. clinata

– Fertile pinnae sessile or subsessile, petiolate <2 mm ......................................................................................................... A. smithii

5 Blades bipinnate or more dissected .................................................................................................................................................. 6

– Blades 1-pinnate or sometimes pinnate-pinnatifid, at least in the proximal portion ...................................................................... 10

6 Rhizome apices ascending to erect and hidden by stipe bases ........................................................................................ A. flexuosa

– Rhizome apices horizontal and exposed ........................................................................................................................................... 7

7 Blades lanose ............................................................................................................................................................. A. myriophylla

– Blades subglabrous or glabrescent to hirsute, rarely tomentose ....................................................................................................... 8

8 Rhizome scales red to maroon ............................................................................................................ A. ferruginea var. ferruginea

– Rhizome scales orange to orange-tan ............................................................................................................................................... 9

9 Blades bipinnate, rarely bipinnate-pinnatifid, deltate-ovate ............................................................................................ A. australis

– Blades bipinnate-pinnatifid, broadly deltate ................................................................................... A. tomentosa var. anthriscifolia

10 Blades tapering to base, lanose ............................................................................................................................................ A. lanata

– Blades truncate at base, glabrous, glabrescent, or hirsute .............................................................................................................. 11

11 Veins anastomosing ............................................................................................................................... A. phyllitidis var. phyllitidis

– Veins entirely free ........................................................................................................................................................................... 12

12 Blades broadest at base, gradually tapering to apex, terminal segment much smaller than proximal pinnae; pinna margins minutely denticulate ......................................................................................................................................................................... A. herzogii

– Blades slightly broader at base and tapering to apex, or blades reduced proximally; pinna margins ± entire, faintly crenulate, lacerate, or pinnatifid ...................................................................................................................................................................... 13

13 Blades narrowly deltate or oblong, the proximal pinnae slightly longer than or nearly equalling the next several pinna pairs; pinnae incised (sometimes nearly to the costae), at least the proximal ones; stipes of sterile fronds 1/3–2/3 of sterile frond length ............ ............................................................................................................................................................................................ A. hirsuta

– Blades parallel-sided (lateral pinnae nearly equal in size and shape) or tapering proximally and oblanceolate; pinnae entire or faintly crenulate; stipes of sterile fronds usually less than 1/3 of sterile frond length ................................................................... 14

14 Terminal blade segment often flabellate, about as large as, or larger than the lateral pinnae; blades oblanceolate with proximal pinnae usually greatly reduced .......................................................................................................................................... A. humilis

– Terminal blade segment reduced, smaller (narrower) than lateral pinnae; blades parallel-sided, proximal pinnae not or only slightly reduced ........................................................................................................................................................................................... 15

15 Blades deltate, narrowed distally; pinna margins crenate or shallowly incised; stipes of sterile fronds 1/3 to 2/3 of sterile frond length ................................................................................................................................................................................. A. hispida

– Blades oblong most of their length; pinna margins entire or minutely denticulate; stipes 0–1/4 of sterile frond length .................... ........................................................................................................................................................................................... A. pinnata