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(Last Modified On 1/22/2013)
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(Last Modified On 1/22/2013)
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Genus
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TRICHOPILIA Lindl.
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PlaceOfPublication
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Nat. Syst. Bot. ed. 2, 446. 1836
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Reference
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Benth. & Hook. Gen. Pl. 3:559. 1883.
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Synonym
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Pilumna Lindl. in Bot. Reg. n. s. 7: Misc. 73. 1844. Helcia Lindl. loc. cit. 8: Misc. 17. 1845. Leucohyle Klotzsch, in Ind. Sem. Hort. Bot. Berol. App. 1. 1854. Trichophila Pritz. Icon. Bot. Ind. 1115. 1855, sphalm.
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Description
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Erect epiphytic herbs with approximate monophyllous pseudobulbs. Leaves subcoriaceous to coriaceous or sometimes fleshy, usually elliptic-lanceolate to ligular, rarely narrowly linear or semiterete. Inflorescences slender, short or elongate, erect, arching or pendulous, 1- to 7-flowered scapes produced from the bases of the pseudobulbs. Flowers usually large and attractive. Sepals narrow, widely spreading, often twisted, usually subequal and free, the laterals sometimes connate at the base, rarely as far as the middle. Petals subequal to the dorsal sepal. Lip entire or 3-lobed, clawed at the base and adnate to the base of the column, the limb spreading or the lateral lobes convolute and forming a tube, the mid-lobe spreading, the disk smooth or lamellate. Column erect, semiterete, the margins of the apex projecting, entire or lobed, usually dentate or fimbriate, the base of the column without a foot. Anther terminal within the clinandrium, operculate, incumbent, 1-celled; pollinia 2, waxy.
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Note
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A small genus of tropical American epiphytes ranging from southern Mexico to Peru, Brazil, and the West Indies. It is another of the frequently recurring and perplexing instances in which the specific concepts within the genus are by no means of equal value. In this case there are several groups of closely related entities, each group centering on an archetypal species, and more closely related to it, and each to the other, than to other similar groups within the genus. For example, Trichopilia subulata is obviously closely allied to, if not actually identical with T. mutica; and both markedly distinct from the archetype T. suavis, and its associate T. leucoxa.ntha, or from the archetype T. tortilis, with its closely allied species T. marginata, T. maculata, T. turialbae, T. Galeottiana, etc. Due to the lack, in most instances, of types or adequate series upon which to base comparative studies, I hesitate at this time to undertake any such wholesale overhauling of names as would seem to be required on the basis of probable relationships. The present treatment, for the most part, follows established usage, but it is to be expected that many of these minor concepts may ultimately be reduced to varietal status or synonymy. At the present time six separable specific concepts are rep- resented in Panama.
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Key
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a. Pseudobulbs subcylindric. Leaves fleshy, narrowly linear to semi-terete, 10 mm. wide or less. Lip not tubular ........................................... 5. T. SUBULATA aa. Pseudobulbs ancipitous, linear to suborbicular. Leaves coriaceous to subcoriaceous, ligular to elliptic-lanceolate, 15 mm. wide or more. Lip tubular. b. Pseudobulbs linear, usually more than 4 times as long as broad. c. Lateral sepals connate to about the middle ........................................ 6. T. TURIALBAE cc. Lateral sepals not connate at the base ................................................ 3. T. MARGINATA bb. Pseudobulbs elliptic-oblong to suborbicular, less than 3 times as long as broad. c. Leaves 2-3.5 cm. wide. Basal imbricating bracts of the pseudobulbs conspicuously maculate. Scapes 1-flowered, the inner lip with an inconspicuous keel not equaling the column in length ...... 2. T. MACULATA cc. Leaves 4-7 cm. wide. Basal imbricating bracts of the pseudobulbs not maculate. Scapes several-flowered, the inner lip with a prominent central keel equaling or exceeding the column in length. d. Sepals 2.5-3.5 cm. long .........................................................1. T. LEUCOXANTHA dd. Sepals 4-6 cm. long ......................................................... 4. T. SUAVIS
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