244 



CONTEIBUTIONS FROM THE NATIONAL HEEBAKIUM. 



DISTRIBUTION. 



Sand barrens, Massachusetts to South Carolina. 

 Massachusetts: Andover, Blake in 1882; Nantucket, Bicknell in 1907 and 1908. 

 Connecticut: East Lyme, Graves in 1903 (Bissell Herb.). 

 New York: Hempstead, Bicknell 



in 1903 and 1906. 

 New Jersey: Wildwood, Bicknell 



in 1897, Chase 3517; Wildwood 



Junction, Chase 3523; Toms 



River, Bicknell in 1900 ; Forked 



River, C'^ase3583, 3595; Atsion, 



Chase 3538; Lakehurst, Chase 



3574; Somers Point, Canhy 5 in 



1902; Tuckerton, Chase 3603. 

 Maryland: Chesapeake Beach, 



Hitchcock 1617 ; Suitland, Steele 



in 1899. 

 Virginia: Virginia Beach, Hitchcock 556 (Hitchcock Herb.). 

 North Carolina: Wilmington, Chase 3166, 4580; Hitchcock 335, 399. 

 South Carolina: Orangeburg, Hitchcock 557. 



Fig. 262.— Distribution of P. addisonii. 



O 145. Panicum -wTlmingtonense Ashe. 



Panicum wilmingtonense Ashe, Journ. Elisha Mitchell Soc. 16: 86. 1900. "The 

 type material collected in May, 1899, on the sand hills near W'ilmington, N. C, is 

 preserved in my herbarium." The type, in Ashe's herbarium, is labeled, "Shady 

 slopes on the sand hills one mile to north of Wilmington, May 17, 1899. W. W. Ashe, 

 Collector." The plants are the vernal form with some autumnal culms of the preced- 

 ing season attached. 



Panicum alabamense Ashe, N. C. Agr. Exp. Sta. Bull. 175: 116. 1900, not Trin. 

 1854. "Auburn, Ala., May 7, 1898. Number 1530, Alabama Biological Survey." 

 The type, in Ashe's herbarium, is a tuft of young vernal culms, the panicles only 



partly exserted. Mounted on the sheet -with this is 

 a specimen of P. hicidum. Ashe's description refers 

 to the latter only in so far as the spikelets are said 

 to be glabrous. 



description. 



<f^ 



Fig. 263. — P. wilmingtonense. From 

 type specimen. 



Vernal form bluish green; culms solitary in small 

 tufts ; slender, erect from an ascending base 20 to 

 40 cm. high, pilose with soft, ascending hairs, the 

 nodes pubescent with short, refiexed hairs; sheaths 

 pubescent like the culms, densely villous-ciliate at the summit; blades rather stiff, 

 ascending, 4 to 9 cm. long, 3 to 7 mm. wide, glabrous on the upper surface, softly 

 pubescent to nearly glabrous beneath, strongly ciliate on margin near base, the thick 

 cartilaginous margin white at least when dry; panicles 5 to 8 cm. long, the branches 

 ascending; spikelets 2 mm. long, 1 mm. wide, elliptic, subacute, first glume one- 

 fourth to one-third as long as the spikelet; second glume and sterile lemma pubes- 

 cent, the glume slightly shorter than the fruit at maturity; fruit 1.7 mm. long, 1 mm. 

 wide, elliptic, obtuse. 



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