Macradenia

R. Brown

Bot. Reg. 8: plate 612. 1822.

Etymology: Greek makros, large, and aden, gland, probably referring to the prominent viscidium, which is often referred to as a “gland”
Treatment appears in FNA Volume 26. Treatment on page 647. Mentioned on page 496.

Herbs, epiphytic, cespitose. Stems with prominent, elongate pseudobulbs partially covered by bracts. Leaves per sympodium 1, rarely 2, apical, leathery; blade conduplicate, oblong-lanceolate, dorsiventrally flattened, margins entire. Inflorescences racemes, arising from base of pseudobulb, pendent; bracts narrowly triangular. Flowers: petals and sepals oblong-elliptic, distinct and free; lip 3-lobed, without nectar cavity, callus shallow; column with prominent dorsal hood projecting over anther cap, otherwise without wings or arms; stigmatic cavity longitudinal; rostellum prominent, beaklike, projecting outward. Fruits capsules, ellipsoid, ± triangular in cross section.

Distribution

Tropical and subtropical regions of Western Hemisphere.

Discussion

Species 10–12 (1 in the flora).

Selected References

None.

... more about "Macradenia"
Mark W. Chase +
R. Brown +
Tropical and subtropical regions of Western Hemisphere. +
Greek makros, large, and aden, gland, probably referring to the prominent viscidium, which is often referred to as a “gland” +
Macradenia +
Orchidaceae (tribe Maxillarieae) subtribe Oncidiinae +