208 Rhodora [November 



Graves 320. Ontario: GanU, Herriot 01. Indiana: Miller, C/ia*e 

 1552. ' Wis(^onsin: Trempleau, Pammel in 1887. Illinois: 

 Starved Rock, Cha.<ie 1602, 1603 and 1604- Kansas: Manhattan, 

 KeUerman in 1888. Pennsylvania: Gerniantown, Stone 13. Dis- 

 trict OF Columbia: Zoological Park, Pollard 523. North Caro- 

 lina: Biltmore, Biltmore Herbarium 69Sb. 

 Panicum lanuginosum var. huachucae (Ashe), comb. nov. 



P. huachucae Ashe 1898. Journ. Elisha Mitch. Soc. 15: 51. 



Me. to Minn, and southward. 

 Panicum oricola Ilitchc. & Chase, sp. nov. 



Plants f^rayish, often purplish; culms densely tufted, 10-30 cm. long, 

 spreading, soon becoming branched and prostrate, densely ajipressed 

 or ascending pilose, the hairs on the nodes spreading; sheaths usually 

 more than half the length of the internodes, overlapping on the branches 

 ai)pressed-pilose; blades firm, erect or ascending, 2-5 cm. long, 2-4 

 mm wide, broadest near the base, acuminate; upper surface pilost; 

 with hairs 3-5 mm. long, sparse on the later leaves; lower surface 

 apiiressed-pubescent mixed with longer hairs; ligule a dense ring ot 

 hairs 11 5 mm. long; primary panicle short exserted, or rarely long- 

 exserted early in the season, ovate in oudine, 1.8-3 cm. long, rarely 

 longer 1-2 cm. wide, rather densely flowered, the axis appressed- 

 pubescent, branches fascicled, flexuous, ascending or s])rcadmg; 

 spikelets 1X1.5 mm. broadly obovate, obtuse, pubescent with short 

 spreading hairs, first glume \ to \ the length of the spikelet, abruptly 

 ])ointed, strongly 1 -nerved, second and third equal ami just e(iualing 

 the fruit at maturity, obtuse, 7-9 nerved; fruit 0.9X1.3 mm broadly 

 ellii)tic very turgid", obscurely pointed. In autumnal state the plants 

 are prostrate, forming mats," with short fascicled branches at all the 

 nodes- leaves antl panicles not greatly reduced, the latter overtopped 

 by the leaves, which are less pilose than are the earlier ones; winter 

 leaves lanceolate, sparsely pilose above. 



Distinguished by the decumbent or prostrate habit, appressed- 

 pilose culms and sheaths, and the small panicles of rounded spikelets, 

 large in proportion to the size of the panicle. 



Sand barrens along the coast, Massachusetts to Virginia. | 



Type Hitchcock 4? in National Herbarium. Prostrate clumps on 

 bare sand on low mounds between marsh and sand thme. Lewes, 

 Del. June 18, 1905, collected by A. S. Hitchcock. 



Distribution: Massaciiitsetts: Nantucket, Hitchcock in 1902. 

 New York: Ivong Island, Young in 1871. New Jersey: Absecum, 

 Common.s' 45; The Plains, Stone in 1901. Delaware: Lewes, 

 Hitchcock 47; Rehoboth, Commons 59. Virginia: Cajie Henry, 

 Hitchcock 64; Chase 2339. 



