623 CLXI. GRAMINE^. Zi2Ania. 



4. A. MACROURUS. 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, 

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

 aJbotihie spikelet 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; Its. glaucous, lance-linear^ 

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

 let without palege ; glumes of the ^ hairy, ferruginous, shining ; aw7i contorted. 

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



57. SORGHUM. 



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



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

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

 the upper one awned. 



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

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

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

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

 doubtless well known to our readers. :j: 



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

 Its. carinate, lanceolate; panicle compact, oval, erect until mature; j?s. pubes- 

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

 as a curiosity, or for the seed as food for poultry. :(: 



Tribe 11. ORYZEiE. — 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 ; paleas 2, compressed, 

 carinate, awnless ; scales 2, membranaceous. 

 , 1. L. ORYzoiDEs. Swartz. Cut Grass. 

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

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

 much branched, difiuse, sheathed at the base ; spikelets spreading; palecc ciliate 

 on the keel, white, compressed and closed ; sta. S. — % 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 hairy ; Ivs. lance-linear, roughish ; sheaths roughish backwards, 

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

 pedicellate, in short, appressed, flexuous racemes ; loicer palca 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 ; Jls. large, roimdish, imbricated ; sta. 

 2 ; palece with the keel and veins ciliate.— •'Zj. Wet places, Ohio, Frank, Ct., 

 .Eatoji. 



59. ZIZANIA. 



(? Glumes 0; spikelets 1 -flowered; palese 2, herbaceous. J' Palese 

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

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

 enveloped in the plicate palese. 



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

 ■ ^t *' j" fliameter, fistular^ smooth, 6f high; Ivs. lance-linear, 2— 3f long, 

 an inch Wide, smooth, serrulate; panicle a. foot or more long, pjTamidal, the 



