Mesadenus

Schlechter

Beih. Bot. Centralbl. 37: 367. 1920.

Etymology: Greek (Latinized) meso, middle, and aden, gland
Treatment appears in FNA Volume 26. Treatment on page 525. Mentioned on page 498.
 TaxonIllustrator 
FNA26 Plate 085.jpegEltroplectris calcarata
Dichromanthus cinnabarinus
Mesadenus lucayanus
Barbara Alongi
Barbara Alongi
Barbara Alongi

Herbs, terrestrial, sympodial. Roots fasciculate, fleshy, villous. Stems erect, rhizomatous, short. Leaves several, basal, petiolate; blade not articulate, involute when immature, margins entire. Inflorescences terminal, laxly to densely flowered racemes, erect, scapose, slender. Flowers resupinate; perianth parts partially connate, apices spreading to recurved; sepals subsimilar, subparallel; dorsal sepal adherent to base of column; lateral sepals attached to column-foot; petals adnate to dorsal sepal, falcate; lip auriculate, canaliculate; column arcuate, column-foot present, clinandrium inflated; stigmas 2, confluent; rostellum narrow, notched; anther stalked, cordate, curved backward during anthesis, surpassing rostellum; pollinia 4, clavate, soft, mealy; viscidium ovate to subelliptic. Fruits capsules, erect, obliquely fusiform to ovoid.

Distribution

Tropical and subtropical regions, North America, Mexico, West Indies, Central America, South America

Discussion

Species 7 (1 in the flora).

Selected References

None.

... more about "Mesadenus"
self-pollination +
spreading +  and recurved +
James D. Ackerman +
Schlechter +
indehiscent +
not articulate +
conduplicate +  and plicate +
flattened +, triangular +  and cylindric +
Tropical and subtropical regions +, North America +, Mexico +, West Indies +, Central America +  and South America +
Greek (Latinized) meso, middle, and aden, gland +
3-merous +, sessile +  and pedicellate +
obliquely fusiform;ovoid +
lateral +  and terminal +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
cauline +  and basal +
reduced +
canaliculate +  and auriculate +
larger +
differing in form and color +
1-many-flowered +  and cymose +
pendent +  and erect +
falcate +
Beih. Bot. Centralbl. +
aerial +  and subterranean +
minute +
subparallel +
free +, distinct +, adnate +  and connate +
foliaceous +
not +  and alike +
rhizomatous +
proliferous +
thickened +  and stout +
concave +  and convex +
Mesadenus +
Orchidaceae (tribe Cranichideae) subtribe Spiranthinae +
ovate +  and subelliptic +
annual +  and perennial +
aquatic +, lithophytic +, terrestrial +  and epiphytic +
saprophytic +, photosynthetic +  and mycotrophic +