116 PROCEEDINGS OP THE AMERICAN ACADEMY 



Nuttall's specimens cited by Boott (111. 36) ; Mendocino Co., Calif., 

 Bolander 4747. 



161. Carex retrocurva, Dewey, Wood's Bot. 1845, 423. 

 Very glaucous. — New England to Michigan and Virginia. 



162. Carex ptychocarpa, Steudel, Cyper. Plant. 234. 

 G. digitalis, var. glauca, Chapm. Flora, 541. 



Distinguished radically from C. retrocurva by its short culm (two 

 to five inches high and shorter than the leaves), sessile small and in- 

 conspicuous staminate spike, contiguous and nearly or quite sessile 

 pistillate spikes (only the lowest one long-peduncled and that radical 

 or nearly so), the broad and elongated leafy bracts, and the narrower 

 and more obtusely angled perigynium. Leaves one third to one sixth 

 inch in width, glaucous. In its larger forms it bears some resemblance 

 to C. Careyana, from which it is readily distinguished by the above 

 characters. — Near Lake Hopatcoug, N. New Jersey, Brillon ; Dela- 

 ware, Canhy ; Florida, Chapman, " wet springy places in woods, 

 Aspalaga," and " low forest bordering the Apalachicola River at 

 Chattahoochee," Curtiss (distributed as G. retrocurva) ; New Orleans, 

 Druminond. 



163. Carex digitalis, Willd. Sp. PI. iv. 298. 

 C. oligocarpa,\Mnh]. Descr. Gram. 242. 

 C. Van- Vleckii, Schwein. An. Tab. 



C. oligocarpa, var. Van - Vleckii, Dewey, Sill. Journ. x. 281. 

 C. podostacliys, Steud. Cyper. Plant. 232. 

 New England and Michigan to Florida and Louisiana. 



164. Carex Caroj^iniana, Buckley, Sill. Journ. xlv. 173. 



I have lately examined Buckley's specimens which are deposited in 

 the Torrey herbarium. The specimens are but two, and imperfect at 

 that, but they appear to possess clear specific characters. The species 

 is allied to G. plantaginea and G. Gareyana. From both these species 

 it differs widely in its narrow leaves (two to six lines wide), 'and 

 few-flowered (3-6-flowered) pistillate spikes which are exserted on 

 thread-like peduncles one to four inches long. The well marked and 

 leafless sheaths and obtuse scales of the mostly long-peduncled stami- 

 nate spikes at once distinguish it from all forms of G. laxijlora. The 

 perigynia are evidently much smaller than in either G. plantaginea or 

 G. Gareyana. — Table Mountain, South Carolina, Buckley. Not since 

 collected. 



165. Carex plattphtlla, Carey, Sill. Journ. 2d ser. iv. 23. 

 Massachusetts to Michigan and southward to Virginia, Gurtiss. 



