622 CLXI. GRAMINEjE. Zizania. 



4. A. MACROL'RUs. Michx. Indian Ch-ass. 



St. sulcate on one side, much branched above, 2 — 3f high; Ivs. linear, 

 rough, lower ones very long, upper ones erect; sheaths hairy; spikes conjugate, 

 J — 1' long, in dense lateral and terminal, fastigiate panicles, partly concealed ; 

 abortive spikelct without palese ; ^ monandrous, with a straight awn. — 1\. 

 Swamps, Mid. States to Car. Sept. 



5. A, NUTANS. Beard Grass. 



Glabrous; st. terete, simple, 3 — 5f high; lis. glaucous, lance-linear, 

 rough, ^' broad ; panicle oblong, branched, nodding, 6 — 10' long ; abortive spike- 

 let without palese ; glumes of the ^ hairy, ferruginous, shining; awn contorted. 

 —% Sandy fields, U. S. and Can. Oct. 



57. SORGHUM. 



Formed from sorgM ; the Asiatic name of one of the species. 



Spikelets in 2s or 3s, abortive ones pedicellate, awnless, with 2 

 palese, the perfect, sessile, 1-flowered ; glumes 2, coriaceous ; paleae 3, 

 the upper one awned. 



1. S. SACCHARATUM. Broom Coi-n. — St. thick, solid with pith, 6 — lOf high ; 

 Ivs. lanceolate, acuminate, pubescent at base ; panicle large, diffuse, with long, 

 verticillate, at length nodding branches ; glumes of the perfect spikelet hairy, per- 

 sistent. — From the E. Indies. The uses of this fine, cultivated plant are 

 doubtless well known to our readers, ij: 



2. S. vuLGARE. Indian Millet. — >S'^. erect, round, solid with pith, 6 — lOf high ; 

 Ivs. carinate, lanceolate ; panicle compact, oval, erect until mature ; fls. pubes- 

 cent ; palecB caducous ; //-. naked. — (i) From the E. Indies. Rarely cultivated 

 as a curiosity, or for the seed as food for poultry, ij: 



Tribe 11. ORYZE^. — Inflorescence panicled or spiked. Spikelets, solitary, 

 1 — 3-flowered. Flowers perfect or diclinous. Stamens 1 — 6. 



58. LEER SI A. 



In honor of John Daniel Leers, a German botanist. 



Spikelets 1-flowered, compressed ; glumes ; paleae 2, compressed, 

 carinate, awnless ; scales 2, membranaceous. 



1. L. ORYzoiDEs. Swartz. Cut Grass. 



St. retrorsely scabrous, 3 — 5f high ; Us. lanceolate, carinate, the margin 

 very rough backwards ; sheaths also very rough with retrorse prickles ; panicle 

 much branched, diffuse, sheathed at the base ; spikelets spreading; palea ciliate 

 on the keel, white, compressed and closed ; sta. 3. — %. Avery rough grass, com- 

 mon in .swamps, by streams, &c., U. S. and Can. Aug. 



2. L. ViRGiNiCA. Willd. White Grass. 



St. slender, branched, geniculate or decumbent at base, 2 — 3f long, nodes 

 retrorsely hair}'' ; lis. lance-linear, roiighish ; sheaths roughish backwards, 

 striate ; panicle simple, at length much ex.serted, the lower branches diff'use ; fls. 

 pedicellate, in short, appressed, flexuous racemes ; loioer palea boat-shaped, mu- 

 cronate ; sta. 1 — 2. — % Damp woods, U. S. and Can. Aug. 



3. L. LENTicuLARis. Michx. Catch-fly Grass. 



St. erect, 2 — 4f high ; panicle erect ; 'fls. large, roundish, imbricated ; sta. 

 2 ; palecB with the keel and veins ciliate. — % Wet places, Ohio, Frank, Ct., 

 Eaton. 



59. ZIZANIA. 



c? Grlumes 0; spikelets 1-flowered; paleas 2, herbaceous. ^ PaleaB 

 subequal, awnless ; stamens G. 9 Spikelets subulate ; paleae un- 

 equal, linear, lower one with a straight awn ; styles 2 ; caryopsis 

 enveloped in the plicate palese. 



1. Z. AdUATiCA. Lamb. (Z. clavulosa. Michx.) Indian Rice. 



St. *' in diameter, fistular. smooth, 6f high; Its. lance-linear, 2 — 3f long, 

 an inch wide, smooth, serrulate; p'^mcte a foot or more long, pyramidal, the 



