216 PITTONIA. 
Douglas which was placed asthe third variety of T. heterodon 
in Torrey & Gray, p. 318. But the true T. heterodon isa 
perennial of the far Northwestern coasts, and very unlike 
this. 
TRIFOLIUM PHJEOCEPHALUM. Annual, branched from the 
base, the branches very slender and weak, 2 inches to mere 
than a foot long, only very sparingly leafy: leaflets from 
round-obovate and retuse to elliptic and even lanceolate and 
acute, i to $ inch long, minutely denticulate: peduncles 
almost filiform, 2 to 4 inches long, far surpassing the very 
short-peduncled leaves: involucres reduced, lobed and cleft, 
but not equalling the calyxes of the large and showy flow- 
ers, these rather few in the head, but the dark-purple corol- 
las 4 inch long, nearly four times the length of the calyx; 
this with very simply and prominently 10-nerved tube, and 
much longer lanceolate-subulate aristate-pointed dark-pur- 
ple teeth. : 
A. graceful and beautiful species of the foothills of the 
Sierra Nevada, California; every part of the plant slender 
and delicate, except the apparently large heads; but these 
only seemingly so, by reason of the uncommon dimensions of 
the corolla for a member of the T. variegatum group. In 
small plants the heads are often only from 2 to 4-flowered. 
I have specimens from Butte County, by Mrs. Austin, from 
Amador County, near Jackson, by Geo. Hansen, and also 
from Kern County, by Palmer. 
TRIFOLIUM GEMINIFLORUM. T. pauciflorum, Loja. in Nuov. 
Giorn. Bot. xv. 183, not of Nuttall. I shall not here repro- 
duce Prof. Lojacono’s excellent diagnosis of this very dis- 
tinct subalpine Californian clover which he mistook for Nutt- 
all’s T. pauciflorum and which others have confused with 4. 
variegatum. Very nice specimens of the typical form with 
heads mostly 2-flowered have been distributed by Mrs. Aus- 
tin from Lassen’s Peak, and by Mr. Sonne from near Donner 
Lake. At decidedly lower than subalpine situations 1n 
