14*3 



TIlrANDRiA DIGYNIA. 



7. Argenteus. 



E. 



A. pamculalonga, gra- 



I'amulis solitariis 



J 



cili 



geininatisqiie ,• spicis coo- 

 jugatis, vagina longiori- 

 bus, viilis sericeis albis 



Panicle loiicj, slendei 



"r 



vestitis. 



E. 



branches solitary and b/ 

 pairs ; spikes conjugate, 

 longer than the siieulh, 

 cloatlied with white sil- 

 very hairs. 



Midi. 1. p. 



rerennial. Stem 5 feet high, branching from the base, very gla- 

 brous, tinged with purple. Leaves linear, about a foot long, scabrous, 

 paiticuharly on the upper surface ; sheaths longer than the joints 



f 



spotted \v!icn young, with red. Flowers in a long panicle, the ^vhole 

 plant producing flowers in fact from every upper joint, as all the sj^e- 

 cies do in this section. Feduncles generally 2 from each joint, bulh 

 long, but of unequal length, terminated by two conjugate spikes: 

 sheaths of the flowers scarcely longer than the peduncle, rediceimi 

 the neutral floret, one, at the base of the hermaphrodite flower, very 

 hairy, with a small valve at the summit, pedicel and hair longer tLaii 

 the fertile flov.cr. Cali/x and Corolla hairy along the margins. Sta^ 

 mens 3. Styles 2. Stigmas purple. 

 Grows in drv soils. 



Flowers October. 



Wi ite-sp iked Mdropogon: 



8. VAGINATtS. 



A. paniciila gracili, 

 subappiessa; spicis so- 

 litariis, conjiigatis, vagina 

 bre vioribus ,- floribus gem- 



Panicle siender,^ ap- 



pressed ; spikes solitary, 



conjugate, shorter than 



the sheaths ; flowers by 



inis; hermaphrodito aris- | pairs; the hermaphrodite 



awned; the awn straight, 



tato ; arista recta 



sea- 



bra. 



E. 



scabrous. 



^ Perennial. Stem erect, 5 feet liigh, terete, glabrous. Leaves lonft 

 linear, scabrous on the upper surface; sheaths glabrous. ^'^!f 

 commencing at the middle of the stem ; branches divided, but witi ^ 

 sheath at each spike. Spikes short, conjugate, the rachis very s'*^"' 

 der, hairy. Fediccl of the neutral floret longer than the hcrniapnro^ 

 ditc, verj hair}'. Valves of the caly.r sharply serrulate at the marj 

 gins and kccl. ^icn straiglit, scabrous, three times as long ^^ 

 calvx. Stamen I ? , „ 



This speries is remarkable, even durinir the winter, for its i» ^^ 



filicaths, wluclx geiicriolly cxjiaiul after the ilowcrs are mature* 



