Anathallis Barb. Rodr.
Contenido
Descripción
Minute epiphytes or lithophytes plants. Rhizome relatively elongated, erect, or creeping, formed by 3 internodes between adjacent stems. Roots flexuous, whitish, terete. Stem terete, abbreviated, formed by two internodes, with an annulus near the apex of the upper internode, covered by tubular, obtuse, mucronate, scarious, and overlapping sheaths. Leaf fleshy or fleshy thickened, emarginate and mucronate at the apex, petiolate to subpeciolate. Inflorescence emerging from the annulus, equal to or longer than the leaf, racemose; covered at the base by a conduplicate, scarious, and carinate spathaceous bract; peduncle filiform, with 1–3 membranaceous, tubular bracts. Floral bracts obliquely infundibuliform, obtuse, minutely mucronate, membranaceous. Flowers tiny, half open, successive, or simultaneous. Sepals free, acuminate, or acute at the apex, translucent, glabrous, somewhat fleshy. Petals porrect, acuminate or acute at the apex, translucent, glabrous, sometimes ciliated. Lip vibratile, unguiculate, entire or shortly 3-lobed, attached to the foot column by an oblong, membranous claw. Column arcuate or erect, channeled ventrally, wings prominent and a conspicuous foot, clinandrium covering the anther. Stigma a ventral cavity, viscous; rostellum laminar, helmet-like. Anther ventral; pollinia two, yellow, laterally compressed, provided with laminar caudicles, curved and divergent from each other. Ovary trigonous, arching, glabrous, articulated to a terete pedicel. Capsule ellipsoid or obovoid, trigonous, with persistent perianth.
The genus Anathallis comprises just over 120 species distributed in the Neotropics, from Mexico, extending southward to Bolivia and southern Brazil, including the Antilles (Pridgeon 2005). In Mexico, species of this genus are distributed from Jalisco, Guanajuato, and northern Puebla and Veracruz to Chiapas and the southern Yucatan PeninsulaA
The genus Anathallis comprises just over 120 species distributed in the Neotropics, from Mexico, extending southward to Bolivia and southern Brazil, including the Antilles (Pridgeon 2005). In Mexico, species of this genus are distributed from Jalisco, Guanajuato, and northern Puebla and Veracruz to Chiapas and the southern Yucatan PeninsulaA
Discusión taxonómica
1. Plants with subsessile, orbicular to obovate-elliptic, nearly prostrate to the substrate leaves …………………………………………………………………………..2
2. Leaves adaxially rough-warty; lip 3-lobed; plants from < 400 m elevation ……………………………………………………………………………A. lewisiae
2a. Leaves glabrous; lip entire; plants from > 500 m elevation…. A. minutalis
1a. Plants with leaves petiolate, linear or oblanceolate leaves, erect relative to the substrate……………………………………………………………………………………3
3. Inflorescence longer than the leaf; leaves linear; flowers simultaneous……………………………………………………...A. yucatanensis
3a. Inflorescence as long as the leaf; leaves oblanceolate to elliptical; flowers successive………………………………………………………………...4
4. Floral bract with reddish hairy trichomes; petals lanceolate; lip entire; plants from >1100 m elevation…………………..A. oblanceolata
4a. Floral bract glabrous; petals falcate-lanceolate; lip 3-lobed; plants from < 950 m elevation………………………………..A. sertularioides
A
2. Leaves adaxially rough-warty; lip 3-lobed; plants from < 400 m elevation ……………………………………………………………………………A. lewisiae
2a. Leaves glabrous; lip entire; plants from > 500 m elevation…. A. minutalis
1a. Plants with leaves petiolate, linear or oblanceolate leaves, erect relative to the substrate……………………………………………………………………………………3
3. Inflorescence longer than the leaf; leaves linear; flowers simultaneous……………………………………………………...A. yucatanensis
3a. Inflorescence as long as the leaf; leaves oblanceolate to elliptical; flowers successive………………………………………………………………...4
4. Floral bract with reddish hairy trichomes; petals lanceolate; lip entire; plants from >1100 m elevation…………………..A. oblanceolata
4a. Floral bract glabrous; petals falcate-lanceolate; lip 3-lobed; plants from < 950 m elevation………………………………..A. sertularioides
A