\&2 T1UANDRIA— DIGYNIA. A vena. 



| 1. S. pennata. Common Feather-grass. 



Awns feathery. 



S. pennata. Linn.Sp. PL 1 15. mild. v. \. 440. Fl. Br. 138. Engl. 

 Dot. v. 19. t. 135$. Knapp f. 88. Sine?. 1G3. Schrad. Germ, 

 v. 1.229. 



S. n. 1514. Hall. Hist. v. 2. 239. 



Gramen spartcum pennatum. Bauh. Theatr. 70. /. 71. /)<//. in 

 Raw Sijn. 393. 



G. spartcum pcnnatum majus. Barrel. Ic. t.46. 



G. spicatum, aristis pennatis. Scheuvhz. Agr. 153. t. 3.f. 13, 13, 



Spartum austriacum. Ger. Em. 42. /. 



Avena perennis austriaca capillacea, aristis longissimis pennatis. 

 Moris. v.3.2i0. sect.S. t.7.f.9. 



On dry mountainous rocks ; a doubtful native. 



Found by Dr. Richardson, in company with Thomas Lawson, on 

 the lime-stone rocks hanging over a little valley, called Long 

 Sleadale, about G miles north of Kendall, Westmoreland. Dille- 

 nius. Nobody has been able to meet with it since. 



Perennial. June. 



Root fibrous, crowned with several stems, a foot high, and dense 

 tufts of upright, long, narrow, acute, dark -green, roughish 

 leaves. Sheaths striated, very long, especially the uppermost, 

 which is also considerably dilated, and envelops the young pa- 

 nicle, rising above it when in flower ; the leaf being recurved, 

 pendulous, involute and striated. Stipula oblong, obtuse. Pani- 

 cle simple, erect, of 6 or 7 powers, whose elegant feathery awns, 

 about a foot long, attract general attention, and are used for 

 ornament, in dress, or otherwise. 



54. AVENA. Oat, or Oat-grass. 



Linn. Gen. 37. Juss. 32. Ft. Br. 139. Lam. t. 47. 



Cal. of 2 rather unequal, ovate-lanceolate, concave, lax, 

 membranous-pointed, awnless valves, containing a lax 

 spikelct, of several alternate jlorcts. Cor. of 2 unequal 

 valves ; the outer firmer than the calyx, and about the 

 same size, ovate, involute, so as to be nearly cylindrical, 

 pointed at each end, concave ; deeply cloven at the sum- 

 mit, bearing from the middle of the back a stout awn ; 

 spirally twisting in its lower part; simple and tapering 

 above; spreading when dry; inner valve ovate, smaller, 

 awnless. Nect. of 2 lanceolate scales. Filam. shorter 

 than the corolla. Anth. rather short. Germ, obtuse. 

 Styles somewhat lateral, short, distinct. Stigmas densely 

 feathery. Seed elliptic-oblong, with a narrow channel 

 along its upper side, sometimes downy, closely enveloped 



