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.
Revision as of 05:22, 30 July 2020 by imported>Volume Importer
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 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 +