TRIANDRIA. DIGYNTA. 



435 



brous, shorter than the corolla. Awn of tlie corolla twice or three times 

 Us long as the valve. 



From specimens brought to me from GreenvillC; S, C. by Mra 



Moulins. 



' Flowers August — September ? 



\ 



\ 



3. Sericea. 



A. panicula laxa, difFusaj 1 Panicle lax, diffuse, ca- 

 capillacea; calycibus co- } pillary; calyx much shoit^ 

 rolla multo breviorihus, | er than the corolla, awn- 

 aristatis : corollaj valva I ed ; exterior valve of the 



exteriorearistata,demum | corolla awned^ by age two 



bipartita. 



E. 



parted. 



Stipa sericea, Mich. 1. p. 54. 



Stipa diftusa ? Walt. p. 78. 



long, all 



iZoot perennial, forming very large tufts. Stem erect, 2 — 3 feet 

 %h, slender, columnar. Leaves! — 2 feet long, subulate, involute, 

 glabrous, glaucous on the the inner surface; sheaths glabrous; sti* 

 pules membranous. Fanicle long, expanding. Peduncles 1 — 3 inches 

 long, capillary, purple. Cal^x much shorter than the corolla ; valves 

 unequal, aAvned, sometimes ciiiate, purple. Corolla 2 valved j theex^ 

 tenor lanceolate, concave, glabrous, when old 3 awned ; the lateral 

 wns as long as the valve; the intermediate 3 times as 

 straight and closely appressed ; the interior valve a little smaller, 

 concave, acute, sometimes incised, both purple. Anthers feathered, 

 SU^nias bright purple. 



■\V'u ^^^^^^^''^ of the corolla in this flower is somewhat remarkable. 

 >Vheu young, the exterior valve is entire and simply awned, by ay;e 

 Jt extends and at the same time splits, so that it ultimately resembles 

 anAristida, with straight appressed awns. From its 2 valved cor<dla, 

 |[9 habit, and striking affinity to the next species, I have nlaced it ia 

 tlus genus. ' 



Ihis, though a coarp.e and useless grass, is a i^ery beautiful one. 

 ik i*^- u *^^ islands it occupies the ground for many acres, and with 



. f 



. "§"* purple flowers, and slender, glossy peduncles, it appears 

 *'nen agitated by tlie wind, to cover the earth with a silken carpet. 



yrows abundantly among the sand ridges near the ocean. Nc 

 Columbia. Mr. Herbemont. 



* lowers September— October. 



Neap 



Silky dgrosti&. 



^' Trichopodes. 



E. 



A. panicula lon2;a, dif- 1 Panicle 



^sa, capillacea ; corollje 



^alvb sequalibusjcxteriore 



long, 



di ff u s e, 



capillary ; valves of the 



corolla equal, the cxterk 



♦ 



X 



