ANDROPOGON. TRIANDRIA. DIGYNIA. 157 



culm, generally 3 or 4 proceeding out of each lanceolate 

 compressed sheath, in which ihey are partly concealed ; rachis 

 filiform, very hairy. Abortive Jloiver a mere pedicel or con- 

 tinuation of the rachis. Glumes of the f^erfect Jlomer serrulate 

 on the keel and margins. Corolla hairy, membranaceous; 

 a<wn never twisted. Anther yellow. 

 Hab. In swamps ; particularly those which are brackish. Abund- 

 ant in the pine barrens of New-Jersey, and in the Hackensack 

 meadows. September — October. 



4. A. furcntum MnhL: spikes digitate," generally by 

 fours; abortive flower stameniferous, awnless, resembling the 

 perfect one, the awn of which is subcontorted. M n h L 

 Gram. p. 231. W il I d. SpecAW y. 9\9. P u r s h Fl. \. jf. 

 75. Elliott Sk. I. p. 150. Roem. ^ Schult. II. p. 

 821. 



Root perennial. Culm about 4 feet high. Leaves flat; those 

 about the root very long. Sheathn smooth. Sfiilcfs terminal, 

 3 — 4, ab(jut three inches long ; rachis thick. Abortive fioiuer 

 compressed, on a short thick pedicel half the length cf the valves. 

 Calyx with nearly equal glumes, scabrous, brownish. Corolla 

 2-valved, membranaceous, hairy. Glumen oi the perfect Jloiver 

 unequal, mucronate. Corolla 2-valved with a rudiment of a 

 l-valved abortive floret; inferior valve bifid, with an awn three 

 times its length between the divisions ; superior valve miiuite, 

 ciliate ; valves of the abortive floret lanceolate, awnless, shorter 

 than the calyx. Stamens 3; anthers yellow. Stijlt short. 

 Seed oblong, brown, with a lateral adnate scale near the base. 

 Hab. In rocky situations ; particularly along rivers. August- 

 September. 



This species belongs to the genus PolliniaI of Sprengel, 

 which has been separated from Andropogon by this learned 

 botanist. In the structure of its flowers it strongly resembles 

 the A. purfiurascens. 



5. A. nutans L. : panicle oblong, branched, nodding ; 

 spikelets by pairs; calyx hairy, rufescent; awn contorted. 

 Sp. pL 1480. Willd. Spec. IV. p. 906. Pursh Fl.\. 

 p. 74. Big. Bosf. p. 245. M uh I. Gram.\*. 'iM. Elliott 

 SkA. p. 144. Roem, ^ Schult. II. p. 812. A. avejia- 

 ceum Mich. Fl. I. p. 58. Wi lid. \. c. p. 907. R. S^ S. 

 II. p. 313. 



Root perennial. Culm 3 — 6 feet high, simple. Leaves a foot or 

 more long, half an inch broad, naked, glaucous, Stijiule 

 membranaceous. Panicle at first erect, but at length nodding. 



\ PoiLiNiA. Valvula calycina uniflora, bivalvis, basi pilosa, aristata 

 masc. et hermaphrod. conformes, ilia pedicellata, haec sessilis.— Ab andho- 

 poGOKB ob aristam flosculorum masculorum diversum. Sp reng. pvg. I[ 

 p. 10. 



