44 LEAFLETS. 
of its firm foliage, and the rich rose-red of its dense spikes. 
A specimen of what seems quite the same is in U. S. Herb., as 
collected at some unrecorded station in California by Bridges. 
P. ALISMHFOLIA. Riparian, but doubtless an aquatic at early 
stages and with some leaves floating; herbage of the same vivid 
green as the last, but leaves much larger, the blades of the low- 
est 6 inches long, 24 in breadth, cordate at base, merely acute at 
apex, perfectly glabrous even marginally, the reduced uppermost 
sparsely appressed-silky, the indument of the midvein longer 
but firm and soft throughout, closely appressed; peduncle 
strigulose, scarcely glandular: bracts of the 2-inch-long small- 
flowered spike ovate-lanceolate, glabrous or nearly so. 
On Russian River north of Cloverdale, Calif., 8 July, 1902, 
A. A. Heller, being n. 5823 of his distribution as represented 
in U. S. Herb. I had hoped to make this out to be a probable 
aquatic state of P. hesperia, but the difference as to leaf-margins, 
and the pubescence of the pubescent parts of the foliage in the 
two are radically dissimilar. 
P. COVILLEI. Stout, erect, several feet high, leafy with large 
lanceolate acuminate leaves ascending on short stout petioles of 
an inch or even less; blades of all but the uppermost 6 to 8 
inches long, nearly 2 inches wide, slightly canescent on both 
faces with fine appressed often tortuous hairs, the midvein be- 
neath beset with stouter appressed hairs bristly above a tuber- 
cular base: peduncles beset with very slender gland-tipped hairs ; 
spikes 2 to 32 inches long, their bracts canescently strigulose 
and with some short gland-tipped hairs intermixed ; rounded 
achenes slightly obovate. 
Near Visalia, Calif., Coville & Funston, n. 1266 of the Death 
Valley Exp., and there are older specimens in U. S. Herb., one 
obtained by Newberry on Williamson’s Exp., the other taken on 
the Wilkes’ Exp., both from the Sacramento Valley. 
P. OPHIOPHILA. Evidently riparian and more or less decum- 
bent as to the leafy and floriferous stems, these a foot high; 
leaves of unusually firm texture, the lowest somewhat triangu- 
lar-lanceolate, with a subtruncate base and a long stout ascend- 
ing petiole of 2 inches, the blades 4 or 5 inches, glabrous, or 
