HITCHCOCK AND CHASE— NORTH AMERICAN PANICUM. 331 



Panicum muMenbergianum Schult. Mant. 2: 230. 1824. Based on "Panicum n. 27 

 (sine nomine) Muhlenb. Descr. ub. p. 118." The type is not in the Muhlenberg 

 Herbarium, and there is no evidence that Schultes saw the plant, the description of 

 which he copies from Muhlenberg. The latter gives the locality as "Habitat in 

 Georgia." The description applies well to P. barbulatum Michx. 



Panicum nitidum glabrum Torr. Fl. North. & Mid. U. S. 146. 1824. No locality is 

 mentioned, and the type can not be found in the Torrey Herbarium. The descrip- 

 tion suggests P. commutatum Schult. 



Panicum nitidum gracile Torr. Fl. North. & Mid, U. S. 146. 1824. The only locality 

 mentioned is "near New- York." The type can not be found in the Torrey Herba- 

 rium. The description applies fairly well to the vernal form of P. dichotomum L. 



Panicum nitidum major[us\ Vasey, Contr. Nat. Herb. 3 : 30. 1892. No specimen 

 nor locality is cited and no type can be found in the National Herbarium. Vasey 

 says, "Here could be placed several variable forms." 



Panicum ornatum Desv.; Hamilt. Prodr. PI. Ind. Occ. 11. 1825. "Herb. Prof. cuc_ciLrrv\jL ~ 

 Desv. Porto Rico." This is further described by Desvaux.o We have been unable ■*"v«=»Aj:i_ 

 to find the type of this species. It is doubtful if the type came from Porto Rico,^s 

 the description does not appear to apply to any of the West Indian species. 



Panicum pensylvanicum Spreng. Bot. Gart. Halle, Erst. Nacht. 30. 1801. "Pensyl- 

 vanien." No type nor authentic specimen of this could be found. The species 

 can not be recognized from the description given. A later description^ differs in 

 several essentials and may apply to P. anceps. Willdenowc refers P. pensylvanicum 

 ''Spreng. cat. hort. halens." to P. rostratum Muhl. (P. anceps). 



Panicum, portoricense Desv.; Hamilt. Prodr. PI. Ind. Occ. 11. 1825. "Herb. -tajDuijj^Vnsjj 

 Prof. Desv. Porto Rico." A fm-ther description is given later by Desvaux,<^ where vjcvXL4j-,-rK^ 

 the locality is given as "Antillis." We have been unable to find the tj^pe of this. "^-^^a-^Ux:^ 

 The description appears to apply to a species of the subgenus Dichanthelium. 



Panicum pumilum Raf. Med. Repos. N. Y. 5 : 353. 1808. This is a nomen nudum 

 with no mention of locality nor specimens. 



Panicum rafinesquianum, Schult. Mant. 2 : 257. 1824. Based on P.jlexuosum Raf. 



Panicum reflexopilum Steud. Syn. PI. Glum. 1: 84. 1854. "Oaxaca." We have~ 

 not seen the type. The description applies well to P. viscidellum Scribn. 



Panicum sessilicaule Desv.; Hamilt. Prodr. PI. Ind. Occ. 11. 1825. This is men- 

 tioned in a note under P. cayennense Lam. and later described by Desvaux, e who gives 

 the locality as "Habitat in Carolina?" and states that the plant is only a variety of 

 P. cayennense. It probably did not come from Carolina. We have not seen the type. 



Panicum speciosum Walt. Fl. Carol. 73. 1788. No special locality is given, but the 

 general locality is the valley of the lower Santee River, South Carolina. There is 

 no specimen of this in Walter's herbarium. It can not be identified. 



Panicum striatum Muhl.; Hemsl. Biol. Centr. Amer. Bot. 3: 492. 1885. This is 

 given as a synonym of P. neuranthum Griseb. The name appears here and also 

 later in Foumier's work,/ from which Hemsley quotes as "Panicum striatum Muhl. 

 not liam." We know of no P. striatum of Muhlenberg. 



Panicum vilfiforme Wood, Class-book. 785. 1861. "Wet meadows, E. Tenn.!" 

 We have not been able to locate the type of this, and it can not be identified from 

 the description. It appears to be a species of the group Agrostoidia. , , , 



Panicum virletii Fourn. Mex. PI. 2 : 29. 1886. "San Luis de Potosi (Virl. n. 1305, " 



1371)." This name was earlier listed without description by Hemsley. «7 Neither of 



the specimens cited could be found. The only description given is "Differt a P. 

 diffusa gluma inferiore mediam spiculam superante." The specimens cited by 

 Foumier under P. diffusum are mostly P. ghiesbreghtii Fourn. 



a Opusc. 88 [90]. 1831. « Opusc. 95. 1831. 



b Spreng. Mant. Fl. Hal. 1 : 31. 1807. /Mex. PI. 2 : 19. 1886. 



, c Enum. PI. 1032. 1809. Biol. Centr. Amer. Bot. 3 : 498. 1885. 



d Opusc. 89. 1831. 



