TRIANDRIA, DIGYNIA. 61 
branthed, when young upright, further advanced, 
nutant. Branches of the panicle in pairs or threes ; 
the smaller branches scabrous. CaU 2-valved 
acute less than the corolla, 5-flowered. Cor. 2- 
valved equal obtuse nervose smooth. Siam. 3 
and 2, anthers red. PisU 2. Seed ovate, brown, 
shining. MuhU 
P. striata, Mich. 
In swamps and bogs, rare. In the spongy swamps near 
Kaighn’s point, where Fuirena Squarrosa grows. Perennial, 
June. 
10. P. root somewhat cespitose and perennial ; culm cuspidata. 
partly ancipital, about a foot high. Radical leaves 
erect, long, and narrow ; leaves on the culm ge- 
nerally 2, flat, oblong, lanceolatt^ scabrous only 
on the margin, the lower about an inch long, the 
upper just visible ; all erect and carinate, with a 
coarctate pungent point ; sti pula truncate, lacerate, 
sometimes abruptly acuminate ; sheaths long, but 
a little shorter than the nodes. Panicle small, se- 
miverticillate, alternate, horizontally spreading, 
terminating in an almost simple raceme ; branch- 
es capillary, mostly by twos or threes j fasciculi 3 
or 4. Spiculi crowded towards the extremities 
of the ramifications, cuneate-ovate, or lanceolate, 
before flowering somewhat acute, 3 or 4 flow'ered. 
Calix smooth, inner valve acute. Corolla ovate 
lanceolate, a little obtuse and scariose at the point, 
villous at the base, obsoletely 5-nerved, 3 of the 
lesser nerves ciliately pubescent below. Stamina 
exserted, tremulous, bifurcate at either extremity. 
Styles sessile, complicately plumose, white. Nutt^ 
P. autumnalis, Elliot. 
P. flexuosa, Muhl. ? 
A very early flowering grass, admirably described above. 
As I think the name autumnalis an inappropriate one, I have 
proposed that of cuspidata^ from the spit-pointed, or pungent 
leaves. On the high rocks bordering the Schuylkill at, Le- 
mon-hill, and also on those a mile south of the falls, frequent. 
April. 
7 
