Contributions to Western Botany. 25 
acuminate, a little longer than the stamens; peduncles 
single; bulbs white. 
48. A. Palmeri Wats. King’s Rep. 5 487. Outlines of the 
cells nearly quadrangular, short oblong, to even vertically 
oblong occasionally but always with most of the cells transverse; 
the walls very minutely sinuous; sepals ovate-lanceolate; fila- 
ments with a broad deltoid base; crests thin and conspicuous; 
bulb coats rather thin, probably propagating by bulblets. Grows 
at lower elevations than A. bisceptrum, but probably varies into 
it. Southern Utah and Arizona to N. M. 
49. A. lacunosum Wats. Proc. A. A. 14 231. Bulb coats 
thick, distinetly pitted by the nearly square to oblong reticula- 
tions; flowers rather few; pedicels not over 5” long; sepals not 
over 4” long and oblanceolate; filaments narrowly deltoid at 
base; ovary with obtuse, thickened ridges toward the top of each 
eell. Santa Clara Uo., Calif, on the Coast range at Mariposa 
Peak. 
A3B3C2D,. General outline of the meshes hexagonal, there 
being 1 main, thick, outer coat, which is deeply pitted by 
the walls being much raised and, with a small magnifier, 
appear to have flat-topped walls and which on the inner 
side of the same coat are depressed. This coat is triple, 
having a thin, hyaline membrane on both sides of the 
thick central one, the outer membrane has much contorted 
markings like those of A. Nevadense nearly, the inner has 
single or double and nearly rectangular markings; mesh- 
es twice the size of any other onion in section A. 
50. A. acuminatum Hooker FI. B. A.2 184. Walis of the 
meshes under a moderate power appear beaded, but when mag- 
nified more are minutely sinuous; pedicels 6-12’’ long; flowers 
deep rose-colored, rigid, with recurved tips, 4-7 long; sepals 
lanceolate-acuminate, a third longer than the stamens, the inner 
ones undulate serrulate; filaments slightly enlarged below, ovary 
with six, rounded, contiguous, mammillary crests when fresh which 
do not exceed one-half the height of ovary; plants generally 
