Croton section Cleodora (Klotzsch, 1841) Baillon, 1858

Caruzo, Maria Beatriz Rossi & Cordeiro, Inês, 2013, Taxonomic revision of Croton section Cleodora (Euphorbiaceae), Phytotaxa 121 (1), pp. 1-41 : 3-4

publication ID

https://doi.org/ 10.11646/phytotaxa.121.1.1

DOI

https://doi.org/10.5281/zenodo.10534372

persistent identifier

https://treatment.plazi.org/id/03EC87F5-FFED-0376-FF10-BEBFFA49FE37

treatment provided by

Felipe

scientific name

Croton section Cleodora
status

 

Key to the subsections and species of Croton section Cleodora

1. Sepals of pistillate flowers with quincuncial aestivation. Fruits globose or ellipsoid, never trigonal (except C. rufolepidotus View in CoL ) .............................................................................................................. 2 ( Croton subsect. Sphaerogyni )

- Sepals of pistillate flowers with imbricate aestivation, rarely reduplicate-valvate. Fruits subglobose, usually trigonal ...................................................................................................................................... 10 ( Croton subsect. Spruceani )

2. Leaf glands acropetiolar ............................................................................................................................................... 3

- Leaf glands basilaminar (in C. organensis View in CoL the glands are maculate, inconspicuous).................................................. 5

3. Branchlets angular. Pistillate flowers flask-shaped; disk 5-segmented; calyx lobes not accrescent ........... C. salutaris View in CoL

- Branchlets cylindrical. Pistillate flowers campanulate; disk entire, deeply 5-lobed; calyx lobes strongly accrescent. ..................................................................................................................................................................................... 4

4. Indument rufous-silvery. Leaf margin entire. Stamens ca. 25. Pistillate flowers with styles included in calyx ............ ............................................................................................................................................................. C. campanulatus View in CoL

- Indument silvery. Leaf margin finely serrate. Stamens ca. 15. Pistillate flowers with styles exserted from calyx........ .............................................................................................................................................................. C. hemiargyreus View in CoL

5. Styles 4-fid (12 terminal arms) ..................................................................................................................................... 6

- Styles multifid (> 12 terminal arms) ............................................................................................................................ 7

6. Branchlets flattened. Leaf glands globose. Staminate flowers campanulate. Pistillate flowers flask-shaped. Atlantic rain forest ........................................................................................................................................ 8. C. sphaerogynus View in CoL

- Branchlets cylindrical. Leaf glands saucer-shaped. Staminate flowers subcampanulate. Pistillate flowers ovoid. Amazon rain forests .................................................................................................................................... C. cajucara View in CoL

7. Indument lepidote. Colombia.............................................................................................................. C. rufolepidotus View in CoL

- Indument non lepidote. Eastern Brazil........................................................................................................................ 8

8. Branchlets cylindrical. Staminate flowers cup-shaped. Pistillate flowers subsessile. ............................ C. heterocalyx View in CoL

- Branchlets flattened. Staminate flowers subcampanulate. Pistillate flowers pedicellate ........................................... 9

9. Venation eucamptodromous; foliar glands maculate, inconspicuous. Bracts not foliaceous, without glands. Staminate flowers subcampanulate. Sepals of the pistillate flowers united only at the base .................. C. organensis View in CoL

- Venation brochidodromous; foliar glands globose, conspicuous. Bracts foliaceous, with a pair of globose glands at the base. Staminate flowers campanulate. Sepals of the pistillate flowers united up to half of their length ................. ..................................................................................................................................................... C. stellatoferrugineus View in CoL

10. Leaf glands acropetiolar ............................................................................................................................................ 11

- Leaf glands basilaminar .............................................................................................................................................. 13

11. Stipules lacerate. Pistillate flowers reduplicate-valvate; styles multifid (> 12 terminal arms) ................... C. fragrans View in CoL

- Stipules entire. Pistillate flowers imbricate; styles 4-fid (12 terminal arms).............................................................. 12

12. Branchlets flattened. Anthers ellipsoid. Pistillate flowers subcampanulate; petals with rounded apex ......................... .............................................................................................................................................................. C. fragrantulus View in CoL

- Branchlets cylindrical. Anthers arrow-headed. Pistillate flowers campanulate; petals with wavy and indented apex. ................................................................................................................................................................. C. hoffmannii View in CoL

13. Styles multifid (> 12 terminal arms) .......................................................................................................................... 14

- Styles 4-fid (12 terminal arms) .................................................................................................................................. 15

14. Indument ferrugineous. Staminate flowers campanulate; calyx lobes not deflexed in fruit. Epicarp smooth .............. ................................................................................................................................................................. C. sexmetralis View in CoL

- Indument whitish. Staminate flowers subcampanulate; calyx lobes deflexed in fruit. Epicarp warty ........................... .............................................................................................................................................................. C. billbergianus View in CoL

15. Pistillate flowers urn-shaped ................................................................................................................... C. spruceanus View in CoL

- Pistillate flowers campanulate ... 16

16. Climbing shrubs; branchlets slightly flattened. Stamens ca. 25 ....................................................... C. pseudofragrans View in CoL

- Straight trees to shrubs; branchlets cylindric. Stamens ca. 15................................................................................... 17

17. Indument lepidote. Leaves elliptical, strongly discolorous. Inflorescences congested. Disk of pistillate flowers 5- segmented. Epicarp warty. Amazonian rain forests ................................................................................. C. orinocensis View in CoL

- Indument pubescent. Leaves ovate, slightly discolorous. Inflorescences lax. Disk of pistillate flowers 5-lobed. Epicarp smooth. Brazilian seasonal dry forests .................................................................................... C. rottlerifolius View in CoL

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