TiSO (lUAMlNK.K. (gBASS KAMIL\.) 



■24. P. Walterianum, S.liiillcs Ciilins crcfiiin^r ; Iciuos linoar, r-2' 

 Imi^; sjiikt'S .'J -Ci ; s|)ikcl(Hs gliilinuis, jcirtlv concLMlecl iumIit tlie racliis. — 

 Low niiuUly banks, Nurtli Caroliiiii, and westward. 



3. ERIOCHLOA, III'.K. 



Tnllorosi-ence as in I'aspaliini, but tlif spikelets (in ours) 2-flowered, tlie 

 lower Hower staniinate, and the •jjlunie of the fl<jret tij)|)ed with a sburt j)ul)e8- 

 cent awu. I'cdieel of tlie spikelets thickened alnne the juint. 



1. E. mollis, Kunlh. Culms stout. 4°-6° hif^h, simple or branching; 

 leaves 1° - 1 ',° long. Hat, widening ujiwards ; panicle downy ; spikes or racemes 

 8- 10, 2' -4' long; spikelets in 2 rows under the filiform rachis, ovate-lanceo- 

 late, acute, appressedpnbescent. — Var. LONOiFOLMM (K. longifolium, I'a.se//), 

 is lower (2° -3° high) and more slender; leaves narrower. — Coast of Florida 

 to South Carolina, in sandy soil. 



4. OPLISMENUS, Beauv. 



Panicle composed of short duster-like few-flowered distant l-sided spikes; 

 glumes nearly equal, uneciually (the lowest longer) awned. 



1. O. setarius, L. Culms ascending from a long creeping base, .slender, 

 branching; leaves ovate-lanceolate, thin, I'-2' long; spikes about 5, 5- 8-flow- 

 ered. (I'anicum hirtellum, .S. Flora) — Low shady woods. North Carolina to 

 Mississippi, near the coast. 



5. ANTH^NANTIA, Bcauv. 



Spikelets single, oblong or obovate, loosely racemose on the erect branches 

 of the contracted terminal ])anicle, 2-flowered, the lower flower staminate or 

 neutral ; empty glumes strongly 5-nerved, very villous, as long as the coria- 

 ceous acute floret. Stamens 3. — Perennial grasses, with sim])le, erect culms 

 and linear leaves. 



1. A. villosa, Benth. Culms smooth ; leaves linear-lanceolate, strongly 

 nerved, fringed on the margins, the lower ones widely spreading ; panicle 

 racemose; spikelets obovate; sterile flower 3-androus ; anthers and stigmas 

 yellow. (Aulaxanthus ciliatus. Ell.) — Dry gravelly soil, Florida to North 

 Carolina. July - August. — Culms 2° - 3° high. Leaves and spikelets pale. 



2. A. rufa, Benth. Leaves erect, linear, smooth, elongated ; sterile 

 flower neutral; anthers and stigmas purple; otherwise like the preceding. 

 (Aulaxanthus rufus, E!l.) — Pine barren swamps, Florida to North Carolina. 

 Sept. — Leaves and spikelets purplish. 



6. AMPHICARPUM, Kuuth. 



Perennial flat-leaved grasses, with the spikelets nearly as in Panicum, but of 

 two kinds ; one perfect, but rarely fruitful, disposed in a simple terminal 

 panicle or raceme ; the other larger, pistillate or perfect, and borne at the 

 Bummit of long runner-like radical peduncles. Lower glume minute or 

 wanting. 



