42 
Very abundant, according to the observation of Dr, Parry and 
myself from the railroad cars, throughout the region of the lower San 
Joaquin, yet not appearing to have been collected except by Dr. Kel- 
logg, whose labels say '* Near Antioch, on dry hills, April 22d, 1870/* 
and who referred the plant to H, fasciciilata^ the more branching 
states of which it well resembles; but the much larger size, and dif- 
ferent habitat, and more especially the very prominent stipe of the 
ray-akenes, and the united scales of those of the disk, show it easily 
distinct. 
J Artemisia (Aerotanum) franserioides, — Stems two or three 
feet high, solitary, from a perennial root ; leaves bipinnatifid, broad 
and very large, the lower and those of sterile offshoots often 6 to 10 
inches long (including the petiole) and two-thirds as broad, the upper 
gradually reduced and those of the long, narrowly racemose panicle ■ 
simple, lanceolate, all of very thin texture, green above and pale be- 
neath with a very minute, appressed tomentum; heads very large, 
nodding; scales oblong, obtuse, \A'ith sparingly lacerate-ciliate, scari- 
ous margins, and the greenish back dotted with roundish, white 
glands; receptacle conical; corolla glabrous; style-tips truncate, 
densely panicillate. 
In deep shady woods of Pseudotsttga near the summits of the 
Pinos Altos Mountains, New Mexico, flowering in the middle of Sep- 
tember, 1880; pleasantly fragrant and rather handsome, with the 
aspect of certain species of Franseria, Dr. Gray informs me that it 
has been collected by Gunnison, in Colorado, and by Rothrock, in 
Arizona, and that it was referred to A. discolor. 
Two New Species of Grasses. 
By George Vasey. 
J Stipa stricta. — Culms i to i^ feet high, erect, slender ; radical 
leaves setaceous, more than half as long as the culm ; cauline leaves 
3 or 4, the lower 5 to 6 inches long, the upper short, its sheath dilated 
and enclosing the base of the panicle? ligule very short ; panicle 4 to 8 
inches long, strict, erect, the lower rays in twos or threes, above 
single, appressed, one an inch long, the other nearly sessile ; outer 
glumes narrowly lanceolate, acuminate, 3-nerved, thin ; flowering- 
glumes about 3 inches, including the stipe, pubescent all over, awn 
10 to 14 inches long, twice bent, the lower half strongly pubescent, 
but not plumose. 
Oregon, W. N. Suksdorf, and through the Sierra Nevada Moun- 
tains. 
It has been mistaken for Siipa occidentalism which has longer 
plumose awns, broader 5-nerved glumes, a conspicuous ligule, and a 
shorter, looser panicle. It differs from small forms of Stipa viridula 
in the shorter, more slender culms, shorter rays of the panicle, nar- 
rower glumes and shorter awns. 
^ Aristida Palmeri. — Culms erect, slender, i^ to 2 feet high, 
smooth, simple or branched at the base ; radical leaves very short, 
setaceous ; cauline leaves 4 or 5, somewhat equidistant, 2 to 4 inches 
long, ligule a ring of short ciliate hairs; panicle 6~io inches long, 
