MANUAL OF THE GRASSES OF THE UNITED STATES 993 



Truncate. Ending abruptly, as if cut off horizontally. 



Tuberculate. Furnished with small projections. 



Turgid. Swollen, as the pulvini of a panicle during anthesis. 



Unilateral. One-sided or turned to one side. 



Unisexual. Said of flowers containing only stamens or only pistils. 



Verticillate. In verticils or whorls. 



Villous. Pubescent with long soft hairs. 



Virgate. Straight and erect; wand-shaped. 



Web. The cluster of slender soft hairs at the base of the floret in certain species of 



Poa. 

 Whorl. A cluster of several branches around the axis of an inflorescence. 

 Wing. A thin projection or border; for example, the thin borders on the rachis of 



certain species of Digitaria and Paspalum. 



ADDITIONS AND CORRECTIONS 



Page 77. Festuca idahoensis. Omit Arizona and New Mexico from range. 



Page 158. Eragrostis hirsuta. Add Tennessee to range. 



Page 204. The three varieties of Melica imperfecta should be in italics. They 

 are scarcely worthy of formal varietal standing. 



Page 231. Agropyron repens. Omit New Mexico from range. 



Page 237. Agropyron pseudorepens. Reconsideration of this species in the 

 light of collections received while the text was in press shows it to be distinct 

 from A. pauciflorum. The variety magnum is doubtful, the underground parts 

 are lacking in the type specimen and the blades are wide and rather lax. 



Page 286. Trisetum montanum. Add Arizona to range. 



Page 313, after Calamagrostis perplexa insert the following which was described 

 while the Manual was in press. 



Calamagrostis cainii Hitchc. Culms slender, erect, scabrous below the 

 panicle, 30 to 40 cm tall; sheaths glabrous; blades erect, flat, more or less involute 

 toward the finely attenuate tip, glabrous beneath, scaberulous on the upper 

 surface, narrowed toward the base, the basal ones as much as 35 cm long, 1 to 2 

 mm wide; panicle pale or whitish, loose, 6 to 10 cm long, the branches ascending 

 or somewhat spreading, verticillate, scabrous, naked below, 1 to 2 cm long, 

 bearing 1 to few spikelets, the whorls 7 to 15 cm apart, the pedicels scabrous- 

 pubescent; glumes narrow, acuminate or slightly aristate, 5 to 6 mm long; lemma 

 narrow, acuminate, minutely scabrous near the summit, the callus hairs about 1 

 mm long, the awn arising about 1 mm above the base, somewhat geniculate, 

 twisted below, the tip bent to one side, somewhat exceeding the glumes; palea 

 a little shorter, than the lemma; prolongation of the rachilla very short, the hairs 

 1 to 2 mm long. Known only from the type collection, shrubby summit of 

 Mount LeConte, Tenn. 



Page 373. Muhlenbergia racemosa. Extend range to Virginia. 



Page 445. Aristida basiramea. Add New Hampshire and New York to range. 

 Probably extends to Maine as a native species. (Fide Rhodora 36: 406. 1934.) 



Page 466, line 7 from bottom. For (H. longifolia Vasey), read (H. cenchroides 

 var. longifolia Vasey) . 



Page 535. For Phleum tenue Schrad. read P. subulatum (Savi) Aschers. and 

 Graebn. See page 727. 



Page 626. Panicum annulum. Add Michigan to range. 



Page 774. Transfer paragraph on Agropyron japonicum to Unidentified 

 Names, page 979. 



Page 816, under (27) Bromus racemosus insert: Bromus mollis forma leiostachys 

 Fernald, Rhodora 35: 316. 1933. Based on B. mollis var. leiostachys Hartm. 



Page 982. Setaria caudata var. pauciflora Jones. An examination of the 

 cited specimens shows them to belong to Seteria macrostachya H. B. K. 



