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OF ARTS AND SCIENCES. 115 
been found in sandy fields, hills of Patzcuaro, Michoacan, October, 
1892 (n. 4258). They show that the plant is 1} feet or more in 
height, and that the roots bear fusiform tubers an inch or two in 
length. 
SPIRANTHES AURANTIACA, Benth. & Hook. var. AcUMINATA. 
Bracts narrower, acuminate, somewhat exceeding the flowers, the 
edges involute. Collected-by Dr, Palmer in Jalisco, 1886, no. 581, 
and by Mr. Pringle on foothills of the Sierra Madre, Chihuahua, 1887 
(n. 1509), and again on swells of low meadows, Valley of Toluca, 
September, 1892 (n. 4280). 
Dioscorea miniMA. Glabrous ($ only seen): tuber globose, 4—3 
inch in diameter: stem weak, flexuous, 1-3 inches high, about 
2-leaved: leaves ovate, cordate, acuminate, about 9-nerved, 1 inch or 
less in length, on petioles 3-6 lines long: staminate spikes 2-4, slender, 
pedunculate or subsessile, less than an inch in length, rather densely 
flowered, not manifestly verticillate except below: bractlets linear, 
two thirds as long as the flowers: divisions of the perianth elliptical, 
obtuse, 1} lines in length, white with a green midvein ; stamens 3,8. 
third shorter than the perianth. — Lava beds near Patzcuaro, Mi- 
choacan, July, 1892 (n. 4157). This species is nearly related to 
D. muitinervis, Benth., but differs in the form of the leaves and in. 
the length and color as well as somewhat in the arrangement of the 
flowers. 
In the labels of Mr. Pringle’s distribution of 1893 the following 
corrections are to be noted : — 
4119, Piqueria Pringlei, Rob. & Sea. 
4133, drop mark of interrogation. 
4229, read crassiuscula, not crassicula. 
4238, Astragalus Tolucanus, Rob. & Sea. D. sp. 
4246, Senecio procumbens, HBK. 
4296, add ex char. 
