Stigmatodactylus Maxim. ex Makino

Genus

Angiosperms > Asparagales > Orchidaceae

Characteristics

Herbs, terrestrial, small. Tubers solitary, globose, small; subterranean stem above tuber erect, elongate, becoming fleshy and rhizomatous apically, producing lateral droppers that form new tubers at their tips. Stem slender, glabrous, unbranched, with membranous cataphylls at each node. Leaf solitary, cauline, green. Inflorescence terminal, racemose, 1-to few flowered; floral bracts foliaceous, smaller than leaf. Flowers resupinate, suberect, shortly pedicellate. Sepals free, narrow, similar but lateral sepals slightly oblique and shorter than dorsal sepal. Petals similar to lateral sepals; lip broad, base with fleshy, deeply lobed callus. Column erect, incurved toward apex, sometimes keeled ventrally and with narrow wings at margin, lacking column foot; anther terminal, 2-locular; stigma concave, with prominent digital appendage at posterior margin; pollinia 4, in 2 pairs, granular-farinaceous, lacking caudicle and viscidium.
More
Delicate deciduous tuberous terrestrial orchids forming small groups. Tubers small, globose. Leaf single, broad, green (both sides), margins often lobed, thin-textured, held horizontally above soil surface on a fleshy stalk. Racemes few-flowered; peduncle longer than rachis, fleshy. Flowers tiny, green, on disproportionately long thin ovaries. Sepals and petals free, narrow, of similar size and shape. Labellum attached by base to column base. Labellum lamina porrect, unlobed, broad, with few coarse apical teeth. Callus consists of weak ridge or thickened plate, no basal glands. Column short, winged. Anther with 4 mealy pollinia in 2 pairs attached directly to viscidium.
Life form perennial
Growth form herb
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Foliage retention deciduous
Sexuality hermaphrodite
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Environment

Sheltered sites in moist to wet forest. 
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Hardiness (USDA) 8-12

Usage

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Edible -
Therapeutic use -
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Cultivation

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