622 CLXI. GRAMINE^E. ZIZANIA. 



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, 

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

 abortive spikelet without paleae; monandrous, with a straight awn. 9}. 

 Swamps, Mid. Slates to Car. Sept. 



5. A. NUTANS. Beard Grass. 



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

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

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

 -1\. Sandy fields, U. S. and Can. Oct. 



57. SORGHUM. 



Formed from sorghi ; 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 ; pan.icle large, diffuse, with long, 

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

 sistent. (D 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 ; Jls. pubes- 

 cent ; palecB caducous ; Jr. naked. (J) From the E. Indies. Rarely cultivated 

 as a curiosity, or for the seed as food for poultry. $ 



TRIBE 11. ORYZEJE. Inflorescence panicled or spiked. Spikelets, solitary 

 1 3-nowered. 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 ; Ivs. lanceolate, carinate, the margin 

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

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

 on the keel, white, compressed and closed ; sta. 3. Tj. A very 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 ; lower paka boat-shaped, mu- 

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



3. L. LENTICULARIS. Michx. Catch-Jly Grass. 



St. erect, 2 4f high ; panicle erect ; Jls. large, roundish, imbricated ; sta. 

 2 ; paka with the keel and veins ciliate. 1\. Wet places, Ohio, Frank, Ct., 

 Eaton. 



59. ZIZANIA. 



(? Glumes 0; spikelets 1-flowered ; paleae 2, herbaceous, c? Paleae 

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

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

 enveloped in the plicate paleae. 



1. Z. ACtuATicA. Lamb. (Z. clavulosa. Michx.') Indian, Rice. 



St. ' 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 



