184 PROCEEDINGS OF THE AMERICAN ACADEMY 



below, only the axils of the veins bearing tufts of white hairs: 

 petioles ^—1 inch long: inflorescences axillary, opposite, racemose; 

 bracts few, small, lanceolate; bractlets minute, subulate; calyx 

 glandular-pubescent, of five lance-linear segments, 2 lines long: 

 corolla pubescent on the outer surface, reddish, strongly veined, 

 nearly an inch long; tube narrow; lips subequal, the upper erect, 

 emarginate, the lower spreading, with three very shallow rounded 

 lobes: stamens close to the upper lip, inserted rather low down on 

 the tube; anther cells nearly equal in size, one inserted higher 

 than the other and oblique, both with a small white spur at the 

 base : fruit not seen. — Limestone ledges, Las Canoas, San Luis 

 Potosi, October and December, 1891 (n. 3933). 



Habenaria Pringlei. Roots mostly fibrous, but the central 

 one tuberous: stem 3 feet high: leaves sheathing, ensiform, cari- 

 nate, 6-8 inches long, an inch in breadth, gradually tapering to a 

 long point: bracts lanceolate, sharply acuminate, 2 inches long, 

 5 lines broad; flowers about 10, large, pedicels 18 lines long; the 

 ovary of equal length : sepals ovate, acuminate, minutely cuspidate, 

 8-9 lines in length; the upper one erect, scarcely at all galeate; 

 lateral petals 2-cleft to the base, the segments linear, acute, the 

 upper broader, not equalling the sepals; the lower very narrow, 

 more than an inch in length: lip 3-cleft nearly to the base, exceed- 

 ing an inch in length; the segments all narrow and linear, the 

 lateral somewhat surpassing the thickish, scarcely acute central 

 one : fleshy processes very conspicuous, linear-spatulate, 3-4 lines 

 in length : spur over 5 inches long, exceeding the ovary and ped- 

 icel, its tip sheathed in the bracts and apparently adherent to 

 them. — Near Guadalajara, June, 1891 (n. 3823). This striking 

 species is related to H. macroceratites, Willd., and H. set if era, 

 Lindl., but differs from the former in its much longer narrower 

 leaves, larger flowers, and conspicuous fleshy appendages; from the 

 latter, by its larger more numerous flowers, and in the shape of its 

 petals. 



Tigridia pulchella. Bulb small, oval, \ inch in diameter, with 

 a few fibrous roots at the base : stem slender, flexuous, 6 inches 

 to a foot high, bearing about two narrow linear acute plicate 

 leaves: spathe of two nearly equal lanceolate acute bracts 18 

 lines long, 5 lines broad : flowers solitary, about an inch in 

 diameter: pedicel slender, an inch in length: ovary 4 lines 

 long: outer segments of the perianth ovate-oblong; the lower part 

 slightly broader, light colored and spotted with purple, the blunt 



