622 CLXI. GRAMINE^. Zizanu. 



4. A. MACR0URU3. Michx. Indian Grass. 



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, 

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

 abortiie spikelet without palese; ^ monandrous, with a straight awn. — n\. 

 Swamps, Mid. States to Car. Sept. 



5. A. NUTANS. Beard Grass. 



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

 rough, J' broad; panicle oblong, branched, nodding, 6 — 10' long; aiortive spike- 

 let witliout palece ; glumes of the ^ hairy, ferruginous, shining; awn contorted. 

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



57. SORGHUM. 



Formed from sorghi ; the Asiatic name of one of tiie species. 



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

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

 the upper one awned. 



1. S. SACCHARATUM. Broovi Com. — S'^ thick, solid with pith, 6 — lOf high ; 

 Ivs. lanceolate, acuminate, pubescent at base; paimle 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. ^ 



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

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

 cent ; palea caducous ; //•. naked. — (I) From the E. Indies. Rarely cultivated 

 as a cmriosity, or for the seed as food tor poultry. -^ 



Tribk 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 ; palese 2, compressed, 

 carinate, awnless ; scales 2, membranaceous. 



1. L. oryzoIdes. Swartz. Cut Grass. 



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

 very rough backwards ; slicaths 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. — % A very rough grass, com- 

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



2. L. ViRGiNiCA. Willd. WMtc Grass. 



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

 retrorsely hairy ; Ivs. lance-linear, roughish ; sheaths roughish backwards, 

 striate ; panicle simple, at length much exserted, the lower branches diffuse ; fls. 

 pedicellate, in short, appre.ssed, flexuous racemes; lower palea boat-shaped, mu- 

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



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



St. erect, 2 — 4f high ; panicle erect ; fls. large, roundi.sh, imbricated ; sta. 

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

 Eaton. 



59. ZIZANIA. 



S Glumes 0; spikelets 1 -flowered ; paleas 2, herbaceous, c? Palege 

 subequal, awnless ; stamens 6. 9 Spikelets subulate ; paleae un- 

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

 enveloped in the plicate palege. 



1. Z. AauATicA. Lamb. (Z. clavulosa. Michx.) ' Indian Rice. 

 _ St. i' in diameter, fistular, smooth, 6f high; Ivs. lance-linear, 2— 3f long, 

 an inch wide, smooth, serrulate; panicle a. foot or more long, pyramidal, the 



