178 



CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Pennsylvania: Chambersbiirg, Porter in 1896, 1897, and 1898; Westchester, 



Windle in 1904. 

 Ohio: Vinton, Kellerman 6887. 



Missouri: McDonald County, Bush 413; Eagle Rock, Bush 3246. 

 Maryland: Plummers Island, Hitchcock 118, Steele in 1897; Great Falls, Chase 



3783; West Chevy Chase, Chase 2477£, 5416. 

 District op Columbia: Hitchcock 353. 



North Carolina: Raleigh, Ashe in 1895, Ashe & Chase 3092. 

 Georgia: Stone Mountain, Hitchcock 201. 



100. Panicum calliphyllum Ashe. 



Panicum calliphyllum Ashe, Journ. Elisha Mitchell Soc. 15 : 31. 1898. "Type ma- 

 terial collected by the writer at Watkins, Lake Seneca, N. Y., Aug. 1898. " The type 

 could not be found in Ashe's herbarium. In the National Herbarium is a specimen 

 collected by Ashe "Near Ithaca, N. Y.," which Mr. Ashe has stated orally is from 



the published locality and is a duplicate type. 

 This specimen consists of two vernal culms, lack- 

 ing basal leaves. 



DESCRIPTION. 



Vernal form yellowish green; culms erect, 35 

 to 50 cm. high, glabrous, the nodes sparsely vil- 

 lous ; sheaths glabrous, or the lowermost sparingly 

 pubescent, ciliate on the margin; blades ascend- 

 ing, flat, 8 to 12 cm. long, 9 to 12 mm. wide, gla- 

 brous, ciliate at the rounded base; panicles few- 

 flowered, 7 to 9 cm. long, half as wide or less, with 

 a few ascending branches; spikelets mostly long- 

 pediceled, 2.9 to 3 mm. long, 1.2 mm. wide, elliptic, sparsely pubescent; first glume 

 about one-third the length of the spikelet; second glume and sterile lemma equaling 

 the fruit at maturity; fruit 2.3 mm. long, 1.1 mm. wide, elliptic, subacute. 



Autumnal form sparingly branching from the middle nodes, the branches about as 

 long as the internodes, erect; blades. not greatly reduced; panicles narrow, partly 

 included. 



This little known species has been referred « to P. xanthophysum, to small specimens 

 of which the above-mentioned dupli- 

 cate type bears some superficial re- 

 semblance. The species is closely 

 related to P. bicknellii. But three 

 specimens have been seen, on none of 

 which is the habitat given. 



DISTRIBUTION. 



Massachusetts, New York, and Ohio. 

 Massachusetts: Medford, Perkins 



in 1881 (N. E. Bot. Club 



Herb.). 

 New York: Near Ithaca, Ashe in 1898 

 Ohio: Painesville. Hacker in 1901. 



Fig. 174.— P. calliphyllum. 

 type specimen. , 



From 



Fig. 175.— Distribution of P. calliphyllum. 



a Merrill, Bull. Torrey Club 27 : 595. 1900. 



