Bletia revoluta (Correll) Sosa & M.W.Chase
Descripción
Herbae erectae, saprophyticae. Caules simplices, nudi, robusti, bracteati. Inflorescentia racemosa, pauciflora. Bractee inflorescentine ovatae, acutae, concavae. Sepala et petala apice conspicue revoluta. Sepalum dorsale ob-longo-ellipticum, obtusum. Sepala lateralia obliqua, el-liptica vel elliptico-lanceolata, obtusa vel subacuta, rare retusa. Petala obliqua, elliptica vel elliptico-obovata, ob-tusa. Labellum, in circuitu late ellipticum, profunde tri-lobatum, basi late cuneatum; lobi laterales oblongi, obtusi; lobus medius obovato-cuneatus, apice truncatus vel retusus, margine superiore undulato et nervo medio incrassato; lamina prominenter nervosa nervis plusmin-usve carinatis, lamellis quatuor parvis in lobi medii basi ornata. Columna generis.
Plant saprophytic, erect from a fleshy rhizome, 3-4.5 dm tall. Stems stout, simple, aphyllous, provided with several short broad clasping bracts, apparently purplish in color. Inflorescence a few-flowered raceme, with as many as twelve flowers, up to 20 cm long. Floral bracts broadly ovate, acute, concave, 1-1.4 cm long. Flowers with rather stout pedicellate ovaries which are about 1.5 cm long. Sepals and petals conspicuously revolute at the apex. Dorsal sepal oblong-elliptic, bluntly obtuse, concave, 1.6-2.1 cm long, 6-7 mm wide. Lateral sepals oblique, elliptic to elliptic-lanceolate, obtuse to subacute or rarely minutely retuse at the apex, 1.5-2 cm long, 6.5-7.5 mm wide. Petals oblique, elliptic to elliptic-obovate, bluntly obtuse, 1.5-1.9 cm long, 6-7.5 mm wide. Lip broadly elliptic in outline, deeply 3-lobed, broadly cuneate at the base, 1.4-1.8 cm long, 9-13 mm wide across the lateral lobes; lateral lobes oblong, obtuse, free part 5-6 mm long and 3.5-4.5 mm wide; mid-lobe obovate-cuneate, truncate or retuse at the apex, upper margin undulates, with the central nerve prominently thickened above, 7-8.5 mm long, 5-6 mm wide across the apex; lamina prominently nervose, with all the nerves more or less raised and thickened, adorned with four small somewhat equal lamellae at the base of the mid-lobe. Column clavate, arcuate, about 1.5 cm long.
A
Plant saprophytic, erect from a fleshy rhizome, 3-4.5 dm tall. Stems stout, simple, aphyllous, provided with several short broad clasping bracts, apparently purplish in color. Inflorescence a few-flowered raceme, with as many as twelve flowers, up to 20 cm long. Floral bracts broadly ovate, acute, concave, 1-1.4 cm long. Flowers with rather stout pedicellate ovaries which are about 1.5 cm long. Sepals and petals conspicuously revolute at the apex. Dorsal sepal oblong-elliptic, bluntly obtuse, concave, 1.6-2.1 cm long, 6-7 mm wide. Lateral sepals oblique, elliptic to elliptic-lanceolate, obtuse to subacute or rarely minutely retuse at the apex, 1.5-2 cm long, 6.5-7.5 mm wide. Petals oblique, elliptic to elliptic-obovate, bluntly obtuse, 1.5-1.9 cm long, 6-7.5 mm wide. Lip broadly elliptic in outline, deeply 3-lobed, broadly cuneate at the base, 1.4-1.8 cm long, 9-13 mm wide across the lateral lobes; lateral lobes oblong, obtuse, free part 5-6 mm long and 3.5-4.5 mm wide; mid-lobe obovate-cuneate, truncate or retuse at the apex, upper margin undulates, with the central nerve prominently thickened above, 7-8.5 mm long, 5-6 mm wide across the apex; lamina prominently nervose, with all the nerves more or less raised and thickened, adorned with four small somewhat equal lamellae at the base of the mid-lobe. Column clavate, arcuate, about 1.5 cm long.
A
Forma de crecimiento
HierbaA
Forma de vida
TerrestreA
Nutrición
HeterotróficaA
Floración
(May–)Jun–JulA
Ejemplar revisado
MEXICO—Nuevo Leon: Sierra Madre Oriental, lower San Francisco Canyon, about 15 miles S. W. of Galeana, alt. 7500-8000 ft., sparse in open oak wood, June 10, 1984, C. H. & M. T. Mueller 767 (TYPE in Herb. Ames No. 40617); Sierra Madre Oriental, Canyon above Alamar, about 15 miles S. W. of Galeana, alt. 5000-6000 ft., common in moist open wood, June 2, 1934, C. HI. & M. T. Mueller 700 (Herb. Ames No. 40619); Sierra Madre Oriental, Canyon de los Charcos y Mesa de la Camisa, above Alamar, about 15 miles S. W. of Galena, rare in open oak wood in the upper canyon, June 4, 1934, C. H. & M. T. Mueller 733 (Herb. Ames No. 40618).A
Elevación
1600 – 1800 mA
Tipo de vegetación
Bosque de encino, Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Estatus del taxón
(A) Como definida actualmente, probablemente una entidad natural (monofilética)A
Bibliografía
C. SEMARNAT 2019: MODIFICACIÓN del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010: 101 pp. – https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019#gsc.tab=0 [accessed: 4 May 2023]