Panicum (Tridachne) saccharatum Buckley, 1. c, 2. This name should be 

 retained. Panicum Icichnanthum Torr. 1857, not Hochst. 1855, is a 

 synonym. 



Panicum glomeratum Buckley,!. c.,?>.=Panicum phityphylluDi Munro. Buck- 

 ley's description antedates that of Munro, but the name Panicvm glomera- 

 tum is preoccupied by Panicum glomeratum Moench, 1794, et al. 



Panicum texanum Buckley, 1. c, 3. This is a distinct species and, so far as 

 known, has no synonyms. 



Panicum repente Buckley, 1. c, 3.=Pa?u"cui»i obtusum H. B. K. Nov. Gen. et 

 Sp. PI. 1:98. 1815. 



Panicum ciliatissimum Buckley, 1. c, 4. A very distinct and well-marked 

 species. 



•2. NOTES ON CALAMOVILFA. 



By F. Lamson-Scribner and Elmer D. Merrill. 



CALAMOVILFA GIGANTEA (Nutt.) n. comb. Calamagrostis gigantea 

 Nutt. Trans. Am. Phil. Soc. II, 5 : 143. 1837. 



A stout, erect glabrous perennial, 10 to 20 dm. high, from a stout creeping root- 

 stock, with rigid involute leaves and large, open panicles. Sheaths exceed- 

 ing the internodes, glabrous ; ligule a dense ciliate fringe of hairs about 1 mm. 

 long; leaf -blades about 3 dm. long, glabrous. Panicles 3 to 7 dm. long, the 

 branches spreading or ascending, the lower ones often 3 dm. in length, naked 

 below, flower-bearing toward their extremities. Spikelets 8 to 10 mm. long; 

 empty glumes unequal, glabrous, acute, the first shorter than the second. 

 Flowering glume about 8 mm. long, glabrous above and on the margins, 

 pilose below on both sides of the keel with rather long, appressed white 

 hairs, basal hairs copious, about one-half as long as the glume. Palea 

 about equaling the flowering glume, pilose along the margins, otherwise 

 glabrous. 



The type specimen in the herbarium of the Philadelphia Academy of Natural 

 Sciences is ticketed by Nuttall: " Toxeumia gigantea, Calamagrostis Nutt., 

 Arkansas, Salt River." This specimen, although covering the entire sheet, 

 represents but little more than the panicle of the plant. The entire plant 

 must have been very large. The panicle is over 2 feet long, and the wide- 

 spreading branches more than 1 foot in length, which are flower-bearing 

 toward their extremities, naked below. In many of the spikelets on this 

 specimen the empty glumes are about equal; in others, the second is often 

 slightly longer than the first — 10 mm. long, or somewhat less. The flower- 

 ing glume and palea are equal, the former being pilose -pubescent on the back 

 for two-thirds its length, the latter pilose-pubescent on the margins. 



General distribution in sandy soil, Kansas to Arizona, July to October. 



Specimens examined.— 7va?jsa.s; Moonlight, 183 C. H. Thompson, August 15, 

 1893; Riley County, 904 J. B. Norton, 1896; Stevens Coimty, 344 M. A. Carle- 

 ton. July, 1891. Oklahoma Territory: Kay County, Mark White. July 23, 

 1898. New Mexico: No locality or collector given. 1882. Arizona: Hol- 

 brook, H. H. Rusby, August, 1883; San Francisco Mountains, Loew, 1873; 

 Chalcedony Park, Myrtle Tuck, October 15, 1897; Moki Reservation, 41 Wal- 

 ter Hough, 1896. 



This species was recognized by Torrey in Marcy's Explor. Red Riv., La. 300. 

 1853, and also in Pac R. R. Rept. 4^: 154. 1857, but was later reduced to 

 Calamagrostis lougifolia by Gray. It is closely related to Calamovilfa longi- 

 folia (Hook.) Hack., and all the specimens cited above have been so referred 

 in herbaria. It is distinguished by its larger size, large, open panicles, 

 elongated branches, larger spikelets, and in the pilose flowering glume and 

 palea. 



