HITCHCOCK AND CHASE—-NORTH AMERICAN PANICUM. 8831 
Panicum muhlenbergianum 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. 8: 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. Pl. Ind. Occ. 11. 1825. ‘Herb. Prof. 
Desv. Porto Rico.’’ This is further described by Desvaux.¢ We have been unable 
to find the type of this species. It is doubtful if the type came from Porto Rico, as 
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. Willdenow¢ refers P. pensylvanicum 
““Spreng. cat. hort. halens.’’ to P. rostratum Muhl. (P. anceps). 
Panicum portoricense Desy.; Hamilt. Prodr. Pl. Ind. Occ. 11. 1825. ‘‘Herb. 
Prof. Desv. Porto Rico.’’ <A further description is given later by Desvaux,¢ where 
the locality is given as ‘‘Antillis.’”” We have been unable to find the type of this. 
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. flecuosum Raf. 
Panicum reflecopilum Steud. Syn. Pl. Glum. 1: 84. 1854. ‘‘Oaxaca.’’ We have 
not seen the type. The description applies well to P. viscidellum Scribn. 
Panicum sessilicaule Desv.; Hamilt. Prodr. Pl. Ind. Occ. 11. 1825. This is men- 
tioned in a note under P. cayennense Lam. and later described by Desvaux, ¢ 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 Fournier’s work,/ from which Hemsley quotes as ‘‘Panicum striatum Muhl. 
not Lam.’’ 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. Pl. 2: 29. 1886. ‘San Luis de Potost (Viru. n. 1305, 
1371). This name was earlier listed without description by Hemsley.g Neither of 
the specimens cited could be found. The only description given is *‘Differt a P. 
diffuso gluma inferiore mediam spiculam superante.’’ The specimens cited by 
Fournier under P. diffusum are mostly P. ghiesbreghtix Fourn. 
a Opusc. 88 [90]. 1831. ¢Opusc. 95. 1831. 
b Spreng. Mant. Fl. Hal. 1: 31. 1807. i Mex. Pl. 2: 19. 1886. 
¢ Enum. PI. 1032. 1809. g Biol. Centr. Amer. Bot. 3: 498. 1885. 
@ Opusc. 89. 1831. 
