70 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



lineation, is upon the plan of that of E. acicularis. This renders the species a very 

 peculiar and distinct one. Proc. Ante)-. Acad., X., 77. 



The species occurs sparingly at Peoria, Illinois, according to Bren- 

 del's Flora Peoriana, p. 85. The Iowa specimens, which agree well 

 with the description, apparently possess no ])erigynial bristles. 



Carex Meadii, DeiiK, var. Bebbh {Olney). — This was published in 

 Olney's Carices Bor.-Amer., Fasc. I., No. 22, without comments, as a 

 variety of C. panicea, L., and has never, I believe, been described. The 

 following description will enable collectors to identify the plant : 



Sterile spikes with stalk two to four times its length; fertile spikes usually 2, 

 erect, remote, slender-peduncled, rather loosely flowered; sheaths of the foliaceous 

 bracts long and slightly inflated; perigynia and scales as in C. Meadii, except 

 paler, and the former less distinctly nerved; culms slender, somewhat roughish. 



Resembles C. tdanica, for which it is sometimes mistaken, in habit 

 and in the loosely flowered fertile spikes, only with longer jjcduncles, but 

 C. Meadii in the perigynia and scales; it may be merely an attenuated 

 form of the latter. Moist prairies, Winnebago county, Illinois {Behb); 

 Om.c'A.go {Bah'ock); Racine, Wisconsin {Dai'is); and northwestwardly. 

 Collected in Iowa by Mr. Cratty. 



BucHLOE, Eiigcbn. — Flowers dioecious, heteromorphous. Male plant: Spikes 

 i-sided, 2-ranked; spikelets 2 to 3-flowered; glumes i-nerved; squamulte in pairs. 

 Female plant: Spikes i to 3, oblique in the involucrate sheaths of the upper 

 leaves; spikelets i-flowered, crowded; lower glume of the lowest spikelet i to 3- 

 nerved, the lower side adnata to the back of the upper glume; lower glumes of the 

 other spikelets (internal as to the head) i-nerved, free, smaller; upper glumes (ex- 

 ternal) nerveless, connate at the base with the thickened rhachis, at length like a 

 hard, woody involucre; squamulte as in male flowers; ovary lenticular, glabrous; 

 stigmas much longer than the two erect styles. 



B. DACTYLOIDES, Eugelm.- — Densely tufted, spreading by stolens, forming broad 

 mats; culms 3 to 6 inches long. Male plant: Flowering stems 4 to 6 inches high; 

 leaves nearly smooth; sheaths strongly bearded at the throat; uppermost spikelets 

 abortive, bristle-form; lower glume ovate-lanceolate, with a scarious margin; upper 

 glume twice longer, ovate; lower palet convex, 3-nerved, upper one 2-nerved; sta- 

 mens 3. Female plant: Flowering stems much shorter than the leaves, i^ to 2 

 inches high; 3 minute rudimentary stamens; grain free. — Elevated plains from 

 British America to Mexico and New Mexico. Floi-. Col., Port. &= C'onl., /^y. 



This is the well-known buffalo-grass. It grows sparingly in the north- 

 west corner of the State, on thin, dry soil covering the rocks, where 

 other plants have much difficulty in maintaining themselves. 



Graphephorum festucaceum, O'rav. — Panicle loose, rather erect, primary 

 branches subverticillate; spikelets oblong, about 4-flowered; glumes nearly or quite 

 as long as the spikelets; florets terete, with clustered hairs at the base; outer palet 



