66 = TRIANDRIA, DIGYNIA. 
-. ‘gion and almost pungent acuteness of the calix’and com | 
rolla; valves connecied at their base by a very copious, 
~ long tomentum; panicle semiverticillate and coarctate.) 
4. nemoralis. 5. annua. 6. alpina? 7. compressa. 8. nervata. 
» 9. autumnalis, EL.t 10. angustifolia. 11. aquatica. 12. fii- 
tans. 13. rigida. (These are nearly all introduced species, _ 
or common to Europe as well as America, and of great 
importance in agriculture.) 14. capillaris. 15. tenuis, Ex. 
= 16. hirsuta. 17. subvertieillata. 18. crocata.t 
§ 11. Br1zoma. || Spiculi erect, closely imbricated, flow- 
er glumes ofien angularly 3-nerved; without a connecting 
villous; valves short, ovate, obliquely pointed, (sometimes 
producing the appearance of marginal serratures,) inner. 
valve small, seeds more or less spherical. 
a: Pungens would perhaps have been a better name for this 
arly ffowering vernal grass. 
-_ Oxs Root somewhat cespitose and ial; culm partly 
as ancipital, about a foot high. Radical leaves erect, long, and 
narrow; leaves on the culm generally 2, flat, oblong, lanceolate, 
me: scabrous only on the margin, the lower about aninch long, the 
upper just visible; all erect and carinate, with.a coarctate pun- 
gent point; stipula truncate, lacerate, sometimes abruptly acu- 
minate; sheathes long, but alittle shorter than the nodes. Pa- 
-—nicle small, semiverticillate, alternate, horizontally gti 
é terminating in an almost simple raceme; branches capi 
ly by twos’or threes; fasciculi 3 or 4. Spiculi crowded to- 
_the extremities of the ramifiecatio 8, Cuneate-ovate, or 
lanceolate, before flowering. somewhat acute, 3 or 4-flowered. 
Calix smooth, inner valve acute. Corolla ovate lanceolate, a lit- 
tle obtuse and scariose at the point, villous at the base, obso- 
letely 5-nerved, 3 of the lesser nerves ciliately pubescent below. 
Stamina exserted, tremulous, bifurcate at either extremity. 
. Styles sessile, complicately plumose, white. 
‘Has. Around Philadelphia in rocky situations, on the banks. 
of the Schuylkill, &c. Flowers in April. 
.¢ Culm leafy, round, 18 inchesor 2 feet high. Leaves smooth, 
t,. acuminated, 4 to 6 inches long; stipula elongated. Pani 
flowered. Spikelets-in attenuated racemes, small, 
acutely ovate, generally 2-flowered, pale green, wi 
an ‘sometimes: purplish scariose points. Calix acu- 
as the flosculi, obsoletely 3-nerved, and 
‘ Flowers'Gtong, rather obtuse, with a dorsal line of 
Ci near the base. Lom 
- cle elongated, semiverticillate, branches appressed, NUMETOUS, ae 
