38 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
LEEWARD IsLANps: Guadeloupe, Duss 3529. 
WINDWARD IsLanps: Martinique, Duss 1290. 
‘OLOMBIA: Santa Marta, Smith 173. 
VENEZUELA: Island of Margarita, Miller & Johnston 171. 
British GUIANA: Jenman 6024. 
11. Panicum fasciculatum Swartz. 
Panicum fasciculatum Swartz, Prodr. Veg. Ind. Occ. 22. 1788. ‘‘ Jamaica.” The 
type, in the Swartz Herbarium, has sparsely papillose-hispid sheaths and spikelets 
2.1 to 2.2 mm. long. 
Panicum fuseum Swartz, Prodr. Veg. Ind. Occ. 23. 1788. “Jamaica.” The type, 
in the Swartz Herbarium, consists of two smaller, more branching plants, with some- 
what more hispid sheaths and more contracted panicles than in the type of P. fascicu- 
latum; the spikelets are 2.1 to 2.3 mm. long. 
Panicum flavescens Swartz, Prodr. Veg. Ind. Occ. 23.1788. ‘‘ Jamaica.” The type, 
in the Swartz Herbarium, consists of the upper portion of two culms with panicles 
somewhat more open than those of the type of P. fasciculatum, but otherwise very 
like that; the spikelets are 2.2 to 2.3mm. long. This is not the species described 
under this name by Grisebach@ and by Hooker, ® which is a species of the section 
Ptychophyllum. 
Panicum fusco-rubens Lam. Tabl. Encycl. 1: 171. 1791. “Ex Ins. Carbiaeis,” 
The type, in the Paris Herbarium, is a portion 
of a large plant with a rather open panicle and 
spikelets 2.5 mm. long. 
Panicum fastigiatum Poir. in Lam. Encycl. 
Suppl. 4: 277. 1816. Based on Panicum fascic- 
ulatum Swartz, the name changed because of 
P. fasciculatum Lam, 1798. 
Panicum nigricans Willd.; Spreng. Syst. Veg. 
Fig. 19.—P. fascieulatum. From type 1: 310. 1825, This is given as a synonym under 
specimen. P. fasciculatum. The type, in the Willdenow 
Herbarium, is from ‘Amer. Merid.” collected 
by Humboldt. The spikelets are 2.1 to 2.2 mm. long. 
Panicum fuscatum Presl; Nees, Agrost. Bras. 152. 1829. This is given as a synonym 
under P. fasciculatum y. We have not seen Presl’s specimen. 
Panicum spithamaeum Willd.; Nees, Agrost. Bras. 152. 1829. This name is men- 
tioned in a note under P. fasciculatum. The type, in the Willdenow Herbarium, from 
Humboldt, is labeled, ‘‘Amer. Merid.” This name is mispelled “spithamineum ” 
by Steudel.¢ 
Panicum illinoniense Desv. Opusc. 91.1831. ‘‘Habitat in America boreali,” The 
type, in the Desvaux Herbarium, bears a slip with the name ‘“ Panicum illinoniense 
DesV. Op. p. 91,”’ and “Hab. Carol.”’ The locality, if meant for Carolina, is clearly 
an error, but there are many errors in the data on the labels of Desvaux’s plants. The 
specimen is much like the type of P. fuscum. 
Panicum reticulatum Griseb. Abh. Ges. Wiss. Géttingen 7 : 264. 1857, not Torrey, 
1852. Grisebach states that his specimen was collected by Duchaissing either in the 
Caribbees or in the Isthmus of Panama. We have not seen the type, but Grisebach 
later @ refers this species to P. fuscum Swartz. 
Panicum fuscum fasciculatum Griseb. Fl. Brit. W. Ind. 547. 1864. Based on P. 
fasciculatum Swartz. 
a FI. Brit. W. Ind. 547. 1864. ¢ Syn. Pl. Glum. 1: 80. 1854, 
6 Fl. Brit. Ind. 7: 56. 1896. 
