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Habranthus

(Genus)

Overview

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Herbs, perennial, scapose, from bulbs. Bulbs black or brown, tunicate, ovoid or globose, sometimes with long neck. Leaves deciduous, sessile, erect or recumbent, bases overlapping, sheathing; blade linear, rarely exceeding 2 cm wide, smooth. Scape hollow. Inflorescences umbellate, 1[-4]-flowered, spathaceous; spathe proximally tubular; bracteoles sometimes present. Flowers declinate [to suberect], somewhat zygomorphic; perianth connate proximally, funnelform, shortly tubular basally, 2-8 cm; tepals subequal; filaments inserted on tepals distal to perianth tube, fasciculate [semifasciculate], declinate and recurving distally, filiform, in sets of 4 different lengths; anthers submedially dorsifixed, usually parallel with floral axis, linear-oblong; ovary inferior; style filiform; stigma 3-fid, lobes linear; pedicel rarely absent, hollow. Fruits capsular, 3-locular, thin-walled, subglobose or ± oblate. Seeds numerous, dark brown to black, flat, D-shaped, obliquely winged, lustrous. x = 6.

Species ca. 30: se to sc United States, Mexico, South America.

Habranthus species have at times been included in the genus Zephyranthes. The somewhat zygomorphic flower of Habranthus is clearly distinguished by filaments of 4 different lengths, which are fasciculate to semifasciculate, and always longer than the perianth tube. The actinomorphic flower of Zephyranthes is distinguished by filaments of two lengths (sometimes subequal), which are not fasciculate and are spreading except when shorter than the perianth tube.[1]

Photos

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Taxonomy

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The Genus Habranthus is further organized into finer groupings including:

Bibliography

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Footnotes

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  1. Raymond O. Flagg, Gerald L. Smith & Walter S. Flory "Habranthus". in Flora of North America Vol. 26 Page 55, 281. Oxford University Press. Online at EFloras.org.

Sources

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Last Revised: October 04, 2013
2013/10/04 00:42:37