38 



CONTRIBUTIONS FKOM THE NATIONAL HERBAEIUM. 



Leeward Islands: Guadeloupe, Duss 3529. 

 Windward Islands: Martinique, Duss 1290. 

 Colombia: Santa Marta, Smith 173. 

 Venezuela: Island of Margarita, Miller & Johnston 171. 

 British Guiana : Jenman 6024. 



11. Panicum fasciculatum Swartz. 



Panicum fusco-rubens Lam. Tabl. 



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 fuscum 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 2.3 mm. long. This is not the species described 

 under this name by Grisebach a and by Hooker, & which is a species of the section 

 Ptychophyllum . 



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. 

 1: 310. 1825. This is given as a synonym under 

 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.c 



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. Gottingen 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 a refers this species to P. fuscum Swartz. 



Panicum fuscum fasciculatum Griseb. Fl. Brit. W. Ind. 547. 1864. Based on P. 

 fasciculatum Swartz. 



-P. fasciculatum. 

 specimen. 



From type 



a Fl. Brit. W. Ind. 547. 1864. 

 6 Fl. Brit. Ind. 7 : 56. 1896. 



Syn. PI. Glum. 1: 80. 1854. 



