PLATYSTEMON AND ITS ALLIES. 167 
6. P. riarpuLus. Base of plant unknown; leafy branches 
rigidly erect, 2 or 3 inches high, the stout almost hispid 
peduncles about as long: leaves linear, acutish: corolla 
small, about 4 inch broad, turbinate at base, the petals with 
broad, short claw; filaments narrowly linear or nearly so, 
scarcely wider above: carpels 7 to 9, forming a short 
cylindrical fruit, only slightly torulose, sparsely bristly-hairy: 
stigmas narrowly linear, elongated. 
This is known to me only from southern Utah, where it 
was obtained by Parry in 1874. The specimens are in 
Herb. Calif. Acad., mounted on sheet n. 2754, along with 
the very different P. remotus, 
7. P. acutzoLatus. Very small but stoutish and rigid, 
diffuse, forming a depressed tuft about 5 inches broad, the 
branches glabrous, glaucous, densely leafy: leaves very 
small, oblong, obtuse, and together with the short straight 
rigid peduncles hispid with small straight ascending 
prickles: corolla about } inch broad, rotate, white or cream _ 
color, the petals oblong-obovate: filaments narrowly spatu- 
late linear, not much longer nor any broader than the 
oblong-linear anthers: carpels about 9, less than } inch 
long, very straight, not emphatically torulose, about 7- 
jointed, each joint armed with a short flattened ascending 
prickle: stigmas subulate-lanceolate, stout, erect, hirtel- 
ous. 
On the small rocky islet known as Santa Barbara Island, 
off the coast of southern California, where it is probably 
endemic, and was collected by Mrs. Trask, May, 1901. A 
diminutive species, most distinct from all others, even the 
insular ones, in aspect and character. 
8. P. ornrrnopus. Diffusely branched, dwarf, only 3 or 4 
inches high, not slender: leaves oblong, obtuse, glabrous 
or sparingly hairy: peduncles short, nodding in fruit: 
corolla 4 inch broad, white or cream-color, rotate: filaments 
