Harrisella

Fawcett & Rendle

J. Bot. 47: 265. 1909.

Etymology: For William H. Harris, 1860–1920, F.L.S., British botanist and prolific collector of Jamaican plants
Treatment appears in FNA Volume 26. Treatment on page 621. Mentioned on page 494, 622.
 TaxonIllustrator 
FNA26 Plate 102.jpegBulbophyllum pachyrachis
Campylocentrum pachyrrhizum
Dendrophylax lindenii
Harrisella porrecta
Barbara Alongi
Barbara Alongi
Barbara Alongi
Barbara Alongi

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.

Distribution

Subtropical and tropical regions, North America, Mexico, West Indies, Central America

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.

Selected References

None.

... more about "Harrisella"
self-pollination +
James D. Ackerman +
Fawcett & Rendle +
indehiscent +
not +  and articulate +
conduplicate +  and plicate +
flattened +, triangular +  and cylindric +
Subtropical and tropical regions +, North America +, Mexico +, West Indies +  and Central America +
For William H. Harris, 1860–1920, F.L.S., British botanist and prolific collector of Jamaican plants +
3-merous +, sessile +  and pedicellate +
not resupinate +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
cauline +  and basal +
scale-like +
reduced +
larger +
differing in form and color +
1-many-flowered +  and cymose +
pendent +  and erect +
free +  and distinct +
ceraceous +  and hard +
6 +  and 3 +
aerial +  and subterranean +
slender +
minute +
free +  and distinct +
foliaceous +
not +  and alike +
branched +, or +  and simple +
pendent +  and erect +
inconspicuous +
proliferous +
thickened +  and stout +
concave +  and convex +
Harrisella +
Orchidaceae tribe Vandeae +
alternating +
annual +  and perennial +
saprophytic +, photosynthetic +  and mycotrophic +