282 MONOCOTYLODENOUS. 



1 G Racemosum. Stem erect and decumbent, glabrous, short joints. 

 Leaves distichous, cordate, lanceolate, nerved, short, glabrous. Sheaths hairy 

 at the throat. Panicle terminal, expandinir, some\A hat verticillate. 



% Sept— Oct. Dry soils. 1-2 ft. 



Genus XXXVII. ERIANTHUS. 



Glumes 2, nearly equal, villous at the base, Palece 2, une- 

 qual, the inner one bearing a long awn near its summit. 

 Stamens 2. Styles 2. 



1 E Alopecuroides. Stem erect, a little scabrous, villous towards the summit. 

 Leaves long, striate, hairy on the under surface. Sheath villous at the throat. 

 Floicers in a crowded villous panicle. Involucre hairlike. Glume lanceolate. 

 PaZe«e purplish, unequal; the interior smallest, awned. 

 % Sept.— Oct. Wet grounds. 6-10 ft. 



2 E Breyibarbis. Stem erect, upper joints bearded, lanceolate, hairy at 

 the base. Flowers in appressed panicles Glumes purple, ciliate. Faleae cil- 

 iate, purplish 



% Sept.— Oct. Common. 3-5 ft. 



3 E Strictus. Ston erect- Leaves long, scabrous on the margins. Pan 

 icle appressed ; spikelets 2-flovvered. Involucre co.isisdng of a few hairs, or 

 wauling. Glumes with the nerves spinous. 



% Aug. — Sept. Low country. 4-6 ft. 



4 E CoNTORTUs. Siew erect, bearded at the jonits. Zeawes long, linear- 

 lanceolate. P^nicZe appressed. 7nioZ?{cre as long as the glumes. Interior 

 palca shortest, with a spirally contorted awn. 



% Sept.— October. Low country. 4-5 ft 



ORYZE^. 



Inflorescence paneled. Spikelets solitary, 1-flowered. — 

 The lower palea carl^Jaginous, compressed, keeled. 



Genus XXXVIII LEERSIA. 



Spikelets l-flowered. Glume none. Palece 2, keeled, com- 

 pressed. Scales 2. Floicers in panicles. 



1 L ViRGiNicA. Stem decumbent, erect, hairy at the joints. Leaves linear- 

 lanceolate, scabrous, acute Panicle loose, terminal, with scattered branch- 

 es. Flowers on one side of the rachis, monandrous. Palcae equal, the ex- 

 terior one keeled, the interior one ciliate. Rice grass. 



% Aug. — Sept. Damp soils. 2-3 ft. 



2 L Lenticularis. Stem erect, glabrous, except at the joints. Leaves 

 scabrous along the margins. S/tea^As hispid. P«nic/e erect. i^ou;ers large, 

 diandrous. Paleae ciUate. 



nX Aug,— Sept. Damp soils. 2-4 ft. 



3 L Oryzi'IDEs. Stem erect, or procumbent at the base. Leaves scabrous, 

 Unear-lanceolate. Panicle large. Flowers triandrous, imbricaie, with the 

 keel of the paleae ciliate. 



%. Oct.— Novoraber. Swamps. 3-4 feet. 



Genus XXXIX ZIZANIA. 



Floicers monoecious. Ghime none. Sterile florets min- 

 gled with the fertile ones. PalecE^, sub-awned. Fertile forets 

 palese 2, awned. Style 2-parted, 



