80 TRIANDRIA. DIGYNIA. riPiAXHERuji. 



chusctts. Detvey. Near Deei'field. Cooleyzxi^Hitch 

 cock. Kingston, New- York. Halsey. On the Fishkill 

 mountains, New-York. In Pennsylvania. Muhlenberg, 

 August. 



It is a little remarkable ihat Mu h I en b e r g- should have 

 confounded this plant with the Oryzofisis asfieri/otia of Mi^ 

 chaux^ as it is totally unlike in every respect. It is certainly 

 a PiPTATHEiiuM of P. dc Beauv ois, which genus includes 

 most of the species of Milium having awns. 



5. STfPA. L, 



Calyx 2-valved, membranaceous. Corolla 2-valved5 

 shorter than the calyx, coriaceous, invokite, subcyhn- 

 dric ; aivn terminal, contorted near the base. Seed 

 coated. Gen.pl.\2\. A/'iit t. Gen. I. p. 58. Juss. 

 p. 30. lioem.y Schtilt. Gen. 226. P. de Beaiiv, 

 t. VI. t. 2 — 4. Trin. Jgrost. 31. Flowers panicled. 



Feather-grass. 



S. avenacea L.: leaves setaceous; panicle spreading, 

 sonnewhat secund ; branches mostly in pairs, a little divided ; 

 calyx as long as the seed ; awn naked. Sp. pi. 116. Will d. 

 Spec. I. p. 442. Pursh Fl. I. p. 72. Mukl. Gram, 

 p. 181. Elliott Sk.\. ^. 1^20. Roem. ^ Schult. U, 

 p. 334. Walt. Car. ^.11. S. barbata Mi c h, FL ]. p. 53. 

 S. virgitiica P e r s. Sjjn. I. p. 99. R o e m. ^ Schuit. I. 

 p. 334. S. bicolor Vahl Symb. II. p. 24 .? Pursh Ft. I. 

 p. 73. Andkopogon folio superiore spathaceo, &:c. Gron, 

 Virg. 133. 

 Root perennial, pulm about 2 feet high. Leaves principally 

 radical, 6 — 8 inches long, very narrow, scabrous above. Pan- 

 icle 4 — 6 inches long, few-flowered, at first sheathed at the 

 base and nodding, becoming diffuse ; branches capillary, in 

 pairs and solitary. Glumes of the calyx nearly equal, mucro- 

 nate. Corolla stipitate ; the stipe clothed with a rufous disti- 

 chous beard; inferior valve brownish, scabrous, linear-oblong, 

 3-nerved, terntiinated by a scabrous, twisted anvn 2 or 3 inches 

 long; superior valve nearly membranaceous, abruptly acumi- 

 nate, mucronate, 1 -nerved. Stamens 3. Styles short; stigma 

 plumose, white. ATsc/aries 2, lanceolate. Seed oblong-cylin- 

 dric, dark brown. 

 Hab. In the barren sandy woods of New-Jersey. In the High- 

 lands of New-York, near Phillipstown. Dr.Barratt. In 

 Pennsylvania. Muhlenberg. June. 



6. ARISTIDA. L. 



Calyx 2-valved, membranaceous, unequal. Corolla 

 2-valved, pedicellate, subcylindric ; inferior valve co- 



