Heliconia section Stenochlamys (Baker) K. Schum.

Kress, W. John, Fér, Tomáš & Carlsen, Mónica M., 2025, Phylogenomics and a new classification of the tropical genus Heliconia L. (Monocots, Zingiberales, Heliconiaceae), PhytoKeys 251, pp. 37-66 : 37-66

publication ID	https://doi.org/10.3897/phytokeys.251.130409
DOI	https://doi.org/10.5281/zenodo.14641538
persistent identifier	https://treatment.plazi.org/id/A555FFB3-405D-5B89-938E-EC88C26B3564
treatment provided by	PhytoKeys by Pensoft
scientific name	Heliconia section Stenochlamys (Baker) K. Schum.
status

Treatment

1.2. 1. Heliconia section Stenochlamys (Baker) K. Schum. , Engler A, ed., Pflanzenr. IV. 45: 37. 1900.

Figs 3 E, F View Figure 3

Heliconia subgen. Stenochlamys Baker , Ann. Bot. 7: 190, 194–200. 1893.

Heliconia section Proximochlamys L. Anderss. , Opera Bot. 82: 73. 1985. Type: Heliconia densiflora Verlot. View in CoL

Heliconia section Zingiberastrum L. Anderss. , Opera Bot. 82: 100. 1985. Type: Heliconia hirsuta L. f. View in CoL

Type.

Heliconia psittacorum L. f. View in CoL (designated by L. Andersson, Opera Bot. 82: 22. 1985).

Description and taxonomic notes.

Small- to medium-sized rhizomatous herbs with Musa - like (rarely Zingiber - like) habit. Inflorescence erect, with peduncle, rachis and cincinnal bracts of various colors from red to orange to yellow; cincinnal bracts distichous, generally long and tapering, usually held erect. Flowers with diurnal anthesis, fully resupinate and held at right angles to bracts; perianth short-tubed, angular in cross-section, generally straight, free sepal generally only slightly curved, yellow to orange (sometimes green or white) with green tips; ovary green to yellow to orange to red. Fruits blue, glabrous. Six of the nine species currently placed in this section were included in Andersson’s sect. Stenochlamys ( H. hirsuta L. f., H. densiflora Verlot and H. sylvestris (Gleason) L. B. Smith were placed elsewhere). In the current analysis H. hirsuta , despite its position in the molecular analysis as sister to sect. Heliconia , is placed in this section based on the resupinate flowers with green-colored tips and distichous cincinnal bracts. Similarly genomic data placed H. lourteigiae Emygdio & Santos in sect. Stenochlamys , but morphological traits more strongly ally this species with others in sect. Taeniostrobus . A LPP support of 0.99 demarcates sect. Stenochlamys in the present classification.

Species.

* Heliconia acuminata L. C. Rich. ; * H. brachyantha L. Anderss. ; * H. densiflora Verlot ; * H. hirsuta L. f. †; * H. psittacorum L. f. ; * H. richardiana Miq. ; * H. sylvestris (Gleason) L. B. Smith ; * H. tarumaensis Barr. ; + H. timothei L. Anderss.

Distribution.

Tropical Central and South America ( Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Honduras, Nicaragua, Panama, Paraguay, Peru, Suriname, Trinidad & Tobago, Venezuela).