(Last Modified On 2/8/2013)
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(Last Modified On 2/8/2013)
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Species
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MACRADENIA BRASAVOLAE Rchb. f.
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PlaceOfPublication
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Bot. Zeit. 10:734. 1852.
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Description
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Epiphytic herbs with narrowly linear to oblong, compressed, monophyllous pseudobulbs 2.5-4.5 cm. long and 0.4-1.0 cm. wide, enveloped below in a few imbricating, papery bracts which soon weather away. Leaves ligular, acute, coriaceous, 6.5-16 cm. long and 1.2-2.2 cm. wide, contracted below into short, slender, conduplicate petioles. Inflorescences usually solitary, arching or pendu- lous, many-flowered racemes up to about 25 cm. long, but often less. Flowers of moderate size, on slender pedicels, subtended by inconspicuous, linear-lanceolate, acuminate bracts. Sepals subequal, free, spreading, reddish brown with trans- lucent green margins, the dorsal sepal lanceolate, acuminate, concave, about 18 mm. long and 5 mm. wide, the laterals linear-lanceolate, acuminate, about 20 mm. long and 4 mm. wide, the reverse surfaces with a low central keel. Petals nar- rower than the sepals, reddish brown with translucent green margins, linear- lanceolate, acuminate, about 16 mm. long and 3.5 mm. wide. Lip conspicuously 3-lobed, about 12-15 mm. long and 7 mm. wide when spread out, contracted at the base and continuous with the base of the column, the lateral lobes semi- orbicular, white, erect, and embracing the column in natural position, the ob- liquely subacute anterior margins reflexed, the mid-lobe reddish brown, narrowly linear, acuminate, about 9 mm. long and 1 mm. wide, the disk with a low, fleshy, linear-oblong, obscurely striate callus. Column 6-7 mm. long, subterete, nar- rowed below, gradually dilated above, the margins of the clinandrium conspicu- ously lacerate, the rostellum narrowly linear-acuminate.
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Distribution
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Guatemala, Nicaragua, Panama, Colombia, and probably adjacent territories.
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Specimen
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PANAMA: hills east of Panama City, vicinity Juan Diaz, Powell 3491, 3501; without definite locality, Fairchild s. n.; vicinity Pacora, Allen 2357.
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