NATURAL SCIENCES OF PHILADELPHIA. 79 



ral western collectors, but I am unable to distinguish it specifically from the 

 plant of the Atlantic States. 64§. Tricuspis purpurea, Gray. 646, Stipa 

 Moxgolica, Turcz. (Ptilagrostis Mongolica, Griseb, in Lcdeb., Fl.Ro ^Tl have 

 no specimen by which to confirm this determination, but it accord ?o well 

 with the description, except as to size, as to leave little doubt.* This mak 

 the third species with a plumose awn found in our territory. 



647 : Sporobolus airoides, Torr. £48. S. crypta-nori s r Gray, same a?- 



of Fendler. 649. Calamagrostis stricta, Trin., with some C. sylvatica 



intermixed. 650 . Kosleria cristata, Pers., a very attenuated form. £51. 



Axdropogox argexteus, DC. (A. Jarnesii and A. glaucus, Torr.) {T»2. Abis- 



tida purpurea, Nutt. ; the form called A. Fendler utna by Steudel. 653. Pas- 



PALUM SETACEUM, Michx, 



$54 . Elymus near coxdensatus, Presl. and apparently EC. triticoides 

 Nutt., mixed. 655 . Triticum repevs, L., var. [6 56 . T, caninum, L. var 

 the same as Parry's 381, named T. segilopoides in the coll '. of 1861, but wrongly 

 along with attenuated T. repexs, L. 657. T. vKgilopoides, Turcz., .1. gropy- 

 rum diver gens, Nees.] 



£ 5 g. Beckmannia eruc.eformis, Host. 65 9. Sporobolus airoipes, Torr. 

 .60. Yilfa depauperata, Torr. This wa> described from an extremely re- 

 uced form of a very variable species, of which V. utilis, Torr., is an at nu- 

 ated state. 661. V. cuspidata, Torr. Like others of the genus, this presents 

 great differences in the relative length of the glumes and palea^. 



662. Glyceria pauciflora, Presl. (?ft 3. Catabrosa aquatica, Beauv. 

 664. Muhlenbergia gracilis, Trin. 665. Festuca ovina, L., var. duruiscula. 

 Gray. 666. F. rubra, L.; very young. 667. F. scabrella. Torr.? Perhaps 

 a very narrow-leaved form of this species, of which specimens collected by 

 Dr. Bigelow in New Mexico are the opposite extreme. 



668. PoAnear P. nemoralis. L. It is 375 of Parry. §£9. P. an'dixa, Xutt. 

 in herb. Acad. The Poas of this collection, including -ome undistributed 

 specimens, present several puzzling forms, which can be accurately deter- 

 mined only by a much more thorough study than can be given them at pre- 

 sent. 670. P. arctica. R. Br., (Parry's 376,) mixed with some of P. alpina. 



671. Xgrostis variaxs, Trin. Agrees well with Hooker's No. 217, quoted 

 byTrinius, but some specimens have a strong awn. 672. Pqa serotina. 

 Ehrh. 673. Agrostis near rupestris. 674. Poa alpina. ~L. "mixed with ont 

 which may be a variety of it. [675. Poa, near 669 and 677.] 676. P. arctica. 

 R. Br. ? 677. P. andin a, Nutt. 6T§. Poa, undetermined species. - 



679. Sitanion elymoides, RafT^wo forms of this variable gras-. which 

 witTprobably be reduced to Elymus. 680. Triticium caxixum. L.. var. same as 

 381 of Parry. 681. Hordeum jubatum, L. 682. Alopecurus pratexsis, var. 

 alpestris, WahT7*(^i. glaucus, Less.) ex Gray. 683. A. gexiculatus, var. 

 aristulatus, Michx. 686. Leptaxs paxiculatus, Nutt. 6£§. Vaseya 

 comata, n. gen. and sp. "^his remarkable gras>. which really appears to 

 form a new genus, intermediate between the Arundinacc and the Agrostid* . 

 is dedicated (by the collectors' desire, seconded by Dr. Gray) to Dr. George 

 Vasey, of Ringwood, Illinois, one of the most zealous of our Western botanists. 

 The following are its principal characters : 



VASEYA, nov. gen. 



Panicula coarctata. Spiculae uniflora?, herbaceo-membranacea?. GlumiE 

 uninerves florem adaequantes. Callus obliquus, comam pilorum paleis aequi- 

 longam gerens. Palea inferior trinervis in aristam gracilem attenuata : supe- 

 rior aequilonga, acuminata. Stamina 3. Ovarium stipitatum. Styli ultra 

 medium pilis stigmaticis longis simplicissimis instructi. Squamuke . . . 

 Caryopris ... . Y. comata, a native of the plains of Nebraska ; is a 



confirms 



determination. — A. G, 



] 





