TRTANDRIA DIGTIflA. 158 



/ 



5. Trtflora. E. 

 A. panicula gracili, | Panicle slender, erect ; 



erecta; calycibus acutis ; valves of the calyx acute; 



spicnlis superioribus tru the upper spikes 3 flow. 



floris; foliis brevibus, j ered; leaves short, flat. 



planis. E, | 



Boof fibrous, perennial. Stem 12 — 18 inches higli, erect, terete, 

 ;labrous. Leaves i £ inches long, flat, glabrous on the upper, sca- 

 rous on the under surface; sheaths shorter than the joints ; stipules 

 toiedibranous, lacerate. Valves of the ca/ya? unequal, linear-lanceolate, 

 acute; the keels serrulate. Valves of the corolLi lanceolate, acute, ob- 

 icurely 3 — 5 nerved j the exterior larger than the calyx, and somewhat 

 woollj- at ba.se, but not villous ; the interior valve smaller. Styles short- 

 er than the corolla. Utigmas featliered, white. 



The flowers in this, are larger than in the two succeeding species. 



From the base of the second floret in the lower spikes, a naked pedi- 

 cel arises like a continuation of the rachis ; this in the upper spikes 

 generalij bears a third floret. To the A. melicuides of Alichaux, tliis 

 species has much resemblance ; it appears to ditfer in size, as the glumes 

 m this plant are rather small though long, and by wanting the villous 

 cloathing of the base of the florets and pedicels. 



From specimens collected at Athens, Georgia, by Mr. Green. 



Flowers in April. 



'f 



• 



8. Obtusata. Mich. 



A. foliis planis; pani- I Leaves flat; panicle con- 

 cula coarctata ; floribus tracted ; flowers smooth, 

 ^aevibus, obtusis ; caly- j obtuse; the interior valve 

 cisvalvaiuteriore oblique of the calyx obliquely 

 tiuncata. E. | truncate. 



^Jich. 1. p. 62. Pursh, Flor. Araer. Sept. 1. p. 76. 



^oot perennial. Stem erect, about 2 feet high, glabrous. Leaves 

 Umcheslong, 1 — 2 lines wide, a little hairy and scabrous ; sheaths 

 /^"■y; stipules membranous. Panicle long, composed of erect, alter- 

 tv ] \^^^^^^^^^ racemes. Calyx 2-valved, 2 and sometimes 3-flow- 

 ve k ^■^^^'■^*^'" ^'*^^^ linear, acute ; the interior wide, compressed, 



fj obtuse or truncate, and slightly mucronate. Corolla 2-valved, 

 *L '^^^ f ?a'^J equal ; the exterior a fittle larger, compressed, obtuse, 

 wli-r" K ^'^'■'■^t^'l »ear the point, tinged with green ; the interior 

 rarl- ' 1 *"^^' *^'^ ^^^^ impressed, and the angles ciliate, serrate ; the 



^Js always extending beyond the flowers. Mthers purple, 

 raws in dry, pine land, sometimes in pastures. Common. 



«iowers March— April. Obtiise-foirered Jiira. 



T 



^ 



