?6 



TRIAKDRIA TlGYNIA. 



87: TRISETUM. Pers. ench. I. p. 97. 



pratense. '• T. panicula subcontracta, spicis nitidis, vaginis longis 



striatis glabris, foliis superne villosis. Pers. I. c. 

 Avena flavescens. IVilld. sp. pi. 1. p. A4g. 

 Icon. Sihreb. gram. t. 9. Host. gram. 3. t. 38. 

 In meadows : Pens) Ivania and Virginia, rare. 11 . July. 



V. V. 



pumila. 



aquaLica. 



melicoides. 



ohtuscta. 



Irevifolia. 



capillacea. 



89. AIR A. Gen.pl. 1]2. 



1. A. panicala parva fastigiata (pauciflora) : pedicellis bre- 



vibus, floribus mnticis obtusis calyce duplo longiori- 

 bus : valvulis margirie membranaceis, foliis plauis gla- 

 bris, culm© erecto vix foliis altiore. 

 On barren clay soil, near brick-yards : Pensylvania. % . 

 June. V. V. Scarce an inch high; in close tufts. 



2. A. panicula patente semiverticillata, floribus muticis ob- 



tusis laevibns calyce longioribus, foliis planis, culmo 



repente.-' IVilld. sp. pi. 1. p. 376. 

 Icon. Host. gram. 2. t.4l. Engl. hot. 1557. 

 On water sides and sometimes fleating in water, frequent. 



11 . May — Julyj v. v. 



3. A. panicula parva su brace mat im coarctata : gluma com- 



muni partialibusque majusculis lineari-lanceolalis mu- 

 ticis ; floribus basi villosis, rudimento fiosculi tertii, 

 foliis planis glabris, culmo erecto. Mich.Ji. amcr. 1 . 

 p. 62. 

 In shady woods : Canada to Pensylvania. 2; . July. v. v. 



4. A. panicula in racemum oblongum cnnfertiflorum co- 



arctata, floribus muticis apice compressis, glumaeval- 

 va altera angusto-lineari acuta : altera hfo-obovali ro- 

 tnndato-obtusissima, foliis planis, culmo gracili erecio. 

 Mich.Ji. amer. 1. p. 62. 

 In dry fields : New England to Florida. 71 . June, July. 



V. V. 



5. A. panicula semiverticillata patente : ramis siraplicius- 



culis alteniifloris, floribus muticis calycem sequan- 

 tibus, glumis om^nibus lanceolatis aculis, foliis planis, 

 culmo stricto glabro nudinsculo. 

 In the plains of Missouri. M. Lewis. 11 . June, July. 

 V. s. in Herb. Lewis. This grass is the most common 

 in those plains. 



6. A. panicula capillacea elfusa, flosculis muticis calyce 



