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(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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ORNITHOCEPHALUS BICORNIS Lindl.
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PlaceOfPublication
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Bot. Voy. Sulphur, 172. 1843.
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Synonym
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Ornithocephalus xipbochilus Schltr. in Fedde Rep. Sp. Nov. 3:251. 1906. Zygostates costaricensis Nash, in Bull. Torr. Bot. Club 34:122, t. 8. 1907. Ornithocephalus lanuginosus Ames, in Proc. Biol. Soc. Wash. 34:152. 1921. Ornithocephalus diceras Schltr. in Fedde Rep. Sp. Nov. Beih. 17:87. 1922.
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Description
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Small, epiphytic herbs 3.5-12 cm. tall, the equitant leaves distichously arranged in the form of a broad fan. Leaf blades articulated to the conduplicate, imbricating, persistent bases, coriaceous, lanceolate to gladiate as seen in profile, obliquely acute, 2-9 cm. long and 0.4-1.2 cm. wide. Inflorescences 1-10 slender, many-flowered, axillary racemes about equaling the leaves in length, the rachis densely hispid with spreading glandular hairs. Flowers small, greenish or yellowish, on short hispid pedicels subtended by ovate, acute, membranaceous, ciliate bracts. Sepals suborbicular, concave, about 2 mm. in diameter, the reverse surfaces somewhat hispid, with a central elevated keel, terminating in a short mucro. Petals subequal to the sepals, very shortly clawed at the base, the blades orbicular, concave, about 2 mm. in diameter, the reverse surfaces more or less hispid, with a ciliate central keel, terminating in a short mucro. Lip entire, linear-navicular, acute, strongly incurving, about 4-5 mm. long when spread out, the base with a fleshy, papillose, subquadrate to suborbicular, cushion-like callus, produced at the sides into 2 short, divergent, horn-like appendages each about 1 mm. in length.
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Distribution
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Guatemala, Honduras, Costa Rica, and Panama.
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Specimen
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CANAL ZONE: drowned forest of the Quebrada Ancha, upper Madden Lake region, 70 m., Steyermark & Allen s. n..; vicinity Salamanca Hydrographic Station, Gorge of the Rio Pequeni, Madden Lake area, 70-80 m., Dodge, Steyermark & Allen 16969. PANAMA: hills east of Panama City, sea level, Po-well 174; edge of forest along Panama-Pacora road, near Rio Tecumen, Killip 33I4; without definite locality, Sinclair s. n. VERAGUAS: without definite locality, Hinds s. n.
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Note
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A common, small-flowered lowland species distinguished from 0. cochleari- farmis by the elongate, narrowly navicular, incurving lip and from 0. inflexus by the densely hispid rachis and the divergent horns of the basal callus.
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