Flora of North America species comparison

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Harrisella

harrisella
Habit Herbs epiphytic, monopodial, miniature, glabrous.
Roots

velamentous, slender.
Stems

very short, inconspicuous.
Leaves

absent or scalelike.
Inflorescences

axillary, often sparsely branched.
Flowers

fewer than 12, not resupinate, minute, globose;

sepals and petals similar, distinct and free;

lip simple, with basal, saccate spur;

column short;

anthers terminal, incumbent, operculate;

pollinaria 2, each with 1 hard, waxy pollinium attached to stipe;

viscidia 2, elongate;

ovary subsessile.
Fruits

capsules, dehiscent, 3 broad valves alternating with 3 linear ribs, all 6 segments separating from distal end and reflexing.

Harrisella
Distribution
from USDA
North America; Mexico; Central America; Subtropical and tropical regions; West Indies
Discussion

Species 1.

Harrisella merits careful systematic study. Although L. O. Williams (1965) asserted that the genus has no characteristics by which it can be distinguished from Campylocentrum, among the Caribbean species Harrisella is readily distinguished by several key characteristics: capsules that dehisce from the distal end and separate into 6 parts; relatively long-pedicellate ovaries; and slender, sometimes branched, laxly flowered inflorescences. In addition, Harrisella may be distinguished from Campylocentrum by having two pollinaria instead of one, each possessing only one pollinium. It seems likely that the genus may be more related to the Caribbean Dendrophylax.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 26, p. 621. Author: James D. Ackerman.
Parent taxa Orchidaceae > subfam. Epidendroideae > tribe Vandeae
Subordinate taxa
H. porrecta
Name authority Fawcett & Rendle: J. Bot. 47: 265. (1909)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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