166 Robinson and Greenman—Mexican Plants. 
long.—Collected by C. G. Pringle, chiefly under Arbutus, in cool 
porphyritic gravel, Sierra Madre, Chihuahua, October, 1887 (No 
1373); and on dry ledges under firs, Sierra de las Crucis, 20 
August, 1892 (No. 5326). Mr. Pringle’s two plants differ only 10 
the fact that in the first mentioned the stem and inflorescence 
is sparingly pubescent, in the other quite glabrous. 
Sisyrincuium atatum Hook. var.? ancustissmmum. Erect 14 
stem terete, smooth, 3—-5-leaved, ending in several dichotomous 
inches long, 2 to 3 lines broad; the : 
clusters of flowers solitary, terminal on the branches, 3-5-floweree ; 
outer spathes 14 to 22 lines long, exceeding the inner: perianth 
golden yellow; the outer divisions obovate, short-acuminate, 
about 4 lines long, 2 lines broad; the inner slightly smaller: 
filaments united for about a third of their length; anthers oblong- 
linear, about 3 lines in length: young capsule pubescent, short- 
obovoid, 3 lines long.—Collected by L. C. Sraith on the Cuilapan 
Mountains, Oaxaca, altitude 7,000 feet, 27 June, 1894 (No. 52). 
SISYRINCHIUM PoLycLapuM, Tall, much brane and very 
leafy above, 14 feet high, drying green: root fibres numerous, 2 
to 4 inches long, fusiform-thickened near the ends: stems erect, 
