Harrisella porrecta

(Reichenbach f.) Fawcett & Rendle

J. Bot. 47: 266. 1909.

Illustrated
Basionym: Aeranthus porrectus Reichenbach f. Flora 48: 279. 1865
Synonyms: Campylocentrum porrectum (Reichenbach f.) Rolfe Harrisella amesiana Cogniaux Harrisella uniflora H. Dietrich
Treatment appears in FNA Volume 26. Treatment on page 622. Mentioned on page 619.

Plants leafless, inconspicuous. Roots numerous, silvery gray-green, 0.25–1 mm diam., covering stems. Stems erect with a few reddish-brown, scarious scales, to 15 mm. Inflorescences few-to-many, lax racemes or panicles arising through mass of roots, 2–5 cm; floral bracts less than 1 mm. Flowers pale-yellow; dorsal sepal elliptic, obovate, 2–2.5 × 1.3 mm, apex obtuse to rounded; lateral sepals obliquely elliptic-ovate, 2–2.5 × 1–1.2 mm, apex obtuse to rounded; petals ovate, obtuse, clawed, slightly smaller than sepals; lip broadly ovate, concave, 2.7–4 mm, base with short, apically expanded, scrotiform spur 1 mm wide, margins involute, apex obtuse to rounded; disc with erect tubercle; column stout, 0.25 mm; ovary subsessile, 2 mm. Capsules reddish-brown when mature, ovoid, 4.5–6 mm, sparsely verruculose.


Phenology: Flowering Aug–Sep.
Habitat: On twigs of shrubs and small trees, swamps, mesic hardwood hammocks
Elevation: 0–20 m

Distribution

V26 1271-distribution-map.jpg

Fla., Mexico, West Indies, Central America (El Salvador)

Discussion

Four species have been recognized in Harrisella: H. porrecta, H. filiformis (Swartz) Cogniaux, H. monteverdi (Reichenbach f.) Cogniaux, and H. uniflora Dietrich (H. Dietrich 1982). Harrisella porrecta is sometimes confused with H. filiformis (e.g., N. L. Britton et al. [1923–]1930, vol. [1], part 2); a comparison of the types clearly shows that they are distinct. Harrisella filiformis and H. monteverdi are synonymous and belong to the related genus Campylocentrum (J. D. Ackerman 1995). The Cuban H. uniflora appears to be a depauperate H. porrecta. Nonetheless, the genus may not be monotypic. Mexican populations of H. porrecta do have some distinctive features and may represent at least one additional species (N. M. Warford 1997).

Selected References

None.

Lower Taxa

None.
... more about "Harrisella porrecta"
self-pollination +
obtuse +  and rounded +
James D. Ackerman +
(Reichenbach f.) Fawcett & Rendle +
Aeranthus porrectus +
indehiscent +
not +  and articulate +
conduplicate +  and plicate +
flattened +, triangular +  and cylindric +
reddish-brown +
verruculose +
0.45 cm4.5 mm <br />0.0045 m <br /> (?) +  and 0.6 cm6 mm <br />0.006 m <br /> (?) +
Fla. +, Mexico +, West Indies +  and Central America (El Salvador) +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (?) +
0–20 m +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
3-merous +, sessile +  and pedicellate +
pale-yellow +
not resupinate +
On twigs of shrubs and small trees, swamps, mesic hardwood hammocks +
few +  and many +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
elliptic-ovate +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
cauline +  and basal +
scale-like +
reduced +
concave +  and ovate +
larger +
0.27 cm2.7 mm <br />0.0027 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
differing in form and color +
2 cm20 mm <br />0.02 m <br /> (?) +
1-many-flowered +  and cymose +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
free +  and distinct +
clawed;obtuse;ovate +
slightly smaller +
Flowering Aug–Sep. +
ceraceous +  and hard +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
6 +  and 3 +
silvery gray-green +
0.025 cm0.25 mm <br />2.5e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
aerial +  and subterranean +
slender +
reddish-brown +
minute +
free +  and distinct +
foliaceous +
not +  and alike +
Illustrated +
scrotiform +
expanded +
1 cm10 mm <br />0.01 m <br /> (?) +
branched +, or +  and simple +
inconspicuous +
proliferous +
thickened +  and stout +
0 cm0 mm <br />0 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
concave +  and convex +
Campylocentrum porrectum +, Harrisella amesiana +  and Harrisella uniflora +
Harrisella porrecta +
Harrisella +
species +
alternating +
annual +  and perennial +
saprophytic +, photosynthetic +  and mycotrophic +