1.2. 2. Heliconia section Angustae W. J. Kress, sect. nov.

Figs 3 G, H

Type.

Heliconia angusta Vell.

Description and taxonomic notes.

Small to medium-sized rhizomatous herbs with Musa - like habit. Inflorescence erect, with peduncle, rachis and cincinnal bracts colored primarily red; cincinnal bracts distichous usually held erect at 60–90 degrees to horizontal. Flowers with diurnal anthesis, partially resupinate; perianth straight to uniformly curved, white to green to yellow, triangular in cross-section; ovary yellow to red. Fruits blue, glabrous. The six species united here in subgen. Stenochlamys sect. Angustae were formerly distributed across three sections by Andersson (1985 a 1992; sects. Stenochalmys, Tortex [now Taeniostrobus], and Lasia). Section Angustae with 1.0 LPP support as a monophyletic group in the molecular analysis is sister to sect. Stenochlamys .

Species.

* Heliconia angusta Vell.; + H. dasyantha Koch & Bouché; * H. farinosa Raddi; * H. laneana Barreiros; * H. sampaioana L. Emygdio; * H. velloziana L. Emygdio.

Distribution.

Tropical Northern South America (Brazil, French Guiana, Suriname).