264 



CONTRIBUTIONS FEOM THE NATIONAL HERBAEIUM. 



5 



JU 



ond glume and sterile lemma slightly shortfr than the fruit at maturity; fruit 1 mm. 

 long, elliptic, acute. 



Autumnal form radiate-spreading, late in the season bearing a few branches with 

 somewhat reduced blades and small exserted panicles; winter rosette appearing early, 

 the numerous, rather firm blades bluish 

 green, about the size of those of the 

 vernal culms. 



DISTRIBUTION. 



Moist sandy ground , northern Georgia 

 and Alabama; apparently rare. 



Georgia: Thomson, Bartlett 1461. 

 Alabama: "Sandy soil along a 

 creek. Sand Mt. , June 5, 1900," 

 Harbison 2415; "Bank along 

 ,^.. roadside above Bryants Creek, 



^ ; r^eouthof Pisgah, Oct. 14, 1907," 



Jr^.^M Chase 4475; "In moist spot in woods, south of Pisgah, Oct. 14, 1907," Chase 

 : K'% ^^'4476 ; ' ' Culms widely spreading, crevices of mossy rocks, north bank of Bryants 

 Creek, south of Pisgah, Oct. 14, 1907," Chase 4483. 

 The last-mentioned specimen. Chase 4483, was collected at the type locality of the 

 species, as indicated by Mr. Harbison in a letter. 



Fig. 290. — Distribution of P. concinniiis. 



^"^ 157. Panicum ensifoliura Baldw. 



Panicum ensifolium Baldw.; Ell. Bot. S. C. & Ga. 1: 126. 1816. "Grows in 

 damp soils, * * * Georgia. Dr. Baldwin." The type, in the Elliott Her- 

 barium, is a slender plant 33 cm. high, with a tuft of four acuminate basal leaves, the 

 blades 2.5 to 3.5 cm. long, four culm leaves, the upper minutely puberulent through- 

 out on the under surface, the lower toward the tip only, and a long-exserted panicle, 

 with puberulent spikelets 1.5 mm. long. The accompanying label reads: "Panicum 

 ensifolium Bald. Hab: in humidis Georg: Dr. Baldwin." The basal blades of the 

 type specimen and of a second specimen from "Baldw. Georg." in the herbarium of 

 the Philadelphia Academy are firm and sharp-pointed, though to a much less degree 

 than in P. tenue and P. albomarginatum. 



Panicum nitidum ensifolium Vasey, U. S. Dept. Agr. Div. Bot. Bull. 8 : 29. 1889. 

 Based on Panicum ensifolium Baldw., though the description applies to P. vernale. 



Panicum brittoni[i] Nash, Bull. Torrey Club 24: 194. 1897. "In moist sand in 

 the 'pine barrens' at Forked River, N. J. Collected by Dr. Britton during an excur- 

 sion of the Torrey Botanical Club to the region May 29- June 2, 1896." The type, in 

 Nash's herbarium, consists of a tuft of slender, simple, vernal culms 10 to 19 cm. 

 high, the blades glabrous or minutely puberulent on the under surface, the minutely 

 pubescent spikelets 1.3 to 1.4 mm. long. 



Panicum cuthbei'tii Ashe, Journ. Elisha Mitchell Soc. 15 : 48. 1898. "South Caro- 

 lina: Cuthbert; St. Helena Island." This specimen could not be found in Ashe's her- 

 barium, but a piece of the type bearing the above data, sent by Mr. Ashe, is in the 

 National Herbarium. It consists of a single vernal culm lacking the base, with two 

 nodes, the blades broken off, but the sheaths present, the panicle short-exserted, the 

 immature, pubescent spikelets 1.4 mm. long. Ashe states that "it is separated fi'om 

 P. ensifolium by the strict habit and large basal leaves of the latter," but P. ensifolium 

 as understood by Ashe is P. albomarginatum, as shown by his description" and by his 

 giving P. albomarginatum Nash as a synonym of P. ensifolium. 



a Journ. Elisha Mitchell Soc. 15 : 46. 1898. 



