ROBINSON AND GREENMAN. MEXICAN PLANTS. 35 



silvery diaphanous brown-veined bracts : sepals finely pubescent on the 

 outer surface ; the lateral sepals linear-oblong, 6 lines in length, obtuse, 

 o-uerved, not fleshy ; the dorsal one ovate-lanceolate, obtusish, about the 

 same length : petals linear-oblong, obtusish, 3-nerved, about equalling 

 the sepals ; labellum long-unguiculate ; lamina oblong, 5 lines in lengtli 

 (about equalling or slightly exceeding the claw), 3^ lines broad, with a 

 median lance-shaped callous thickening just above the thickish claw; 

 the latter involute on the margin and somewhat sulcate above. — Col- 

 lected by C. G. Priugle, on hills above San Felipe, Oaxaca, altitude 

 6,000 feet, 31 December, 1894, no. GlOl. 



Cranichis thysanochila. Glabrous throughout, 6 to 8 inches 

 high : roots several, elongated, thick, tuberiform, obtuse, covered with 

 fine short rootlets: leaves basal, ovate, acute, thin, smooth, 1^ to 3 

 inches long, half to two thirds as broad, subsessile ; the contracted base 

 membranous, amplexicaul : stem slender, flexuous, bearing about 5 lan- 

 ceolate attenuate sheathing green bracts : spike 2 to 4 inches in length, 

 only moderately dense : floral bracts ovate-lanceolate, sharply acuminate, 

 green, 3 lines in length, about equalling the ovary : flowers spreading, 

 nearly half inch in length : floral envelopes white ; sepals oblong, obtuse, 

 1-nerved, subequal, about 2 lines in length ; lateral petals broadly spatu- 

 late or narrowly obovate, obtuse, 1-nerved, about equalling the sepals in 

 length ; lip superior, obovate, cuueate, short-clawed, biauriculate at the 

 base, terminated at the apex by an emarginate and fimbriated appendage ; 

 the inner surface longitudinally somewhat 2-crested. — Collected by C. 

 G. Pringle, on calcareous banks, Las Hoyas Caiion, Oaxaca, altitude 

 4,500 feet, 2 November, 1894, no. 6023. This species differs from 

 others of the genus in the fringed apex of the lip. 



Mlcrostylis platyglossa. Erect, a foot high, glabrous, 1-leaved : 

 bulb three fourths inch in diameter : sheath subsolitary, short, obtuse : 

 leaf oval, amplexicaul at the subcordate base and rounded or very obtuse 

 at the apex. If to 2h inches long, 15 to 18 lines broad: peduncles about 

 2 inches long ; racemes 6 to 8 inches long, bracts ovate, acute, a third to 

 half as long as the slender pedicels, these nearly horizontal, 1^^ lines 

 long : flower purple (the labellum sometimes lighter colored), inverted 

 by the torsion of the pedicels, bringing the labellum downward : sepals 

 oblong, obtuse, 1-nerved, about a line long, the upper odd one erect, the 

 lower pair reflexed : lateral petals linear, reflexed ; labellum broadly 

 deltoid, one third broader than long, obtuse, about a line in length, dark 

 purple or yellow (both colors sometimes occurring on the same specimen). 

 — Collected by C. G. Pringle, on the Sierra de San Felipe, Oaxaca, 



