Taxon	Illustrator ⠉
	Heteranthera mexicana Lepanthopsis melanantha Pleurothallis gelida Polystachya concreta Monochoria vaginalis Heteranthera dubia	John Myers Barbara Alongi Barbara Alongi Barbara Alongi John Myers John Myers

Herbs, epiphytic. Roots fibrous. Stems erect, slender; sheaths enclosing stems, ± imbricate, ribbed, tubular, dilated at mouth, ± ciliate or scabrous on ribs and margin of mouth. Leaves 1, erect, subsessile; blade elliptic, leathery. Inflorescences terminal, 1–several-clustered racemes, distichous. Flowers opening simultaneously; sepals unequal; lateral sepals variously connate, membranous, glabrous [pubescent]; lip usually simple [3-lobed], not callous, base inflexibly attached to obsolete column-foot; column short, broad, wingless, column-foot rudimentary, apex hooded; anther apical; pollinia 2, free or adnate to common viscidium, obovoid; ovary articulate with minute, curved pedicel; stigma apical, 2-lobed; rostellum apical. Fruits capsules, deciduous at pedicel (ca. 1 mm), ovoid, 3-valved.

Distribution

Tropics, Mexico, West Indies (Greater Antilles), Central America, South America

Discussion

Species ca. 35 (1 in the flora).

Selected References

None.

Lower Taxa

Lepanthopsis melanantha