Chase — Notes on Genera of Pdnicees. IV. 135 



Paspalum chryxoldephare Doell in .Mart. Fl. Bras. 2 2 : 119. 1877. Based 

 mi Panicum chrysoblephare Steud. 



The North American specimens of this species in the National Her- 

 barium are all from Costa Rica : Herb. Tnstit. physico-geogr. nat. costa- 

 ricensis no. 4404, collected in "Savanes de Boruca," by Pittier & Tonduz 

 and no. 4638, collected between Boruca and Terraba, by Pittier; no. 

 11004 of the same series, collected by Pittier, is a mixture of A. cltryso- 

 hh phaHs and A. aureus. 



Axonopus aureus Beauv. 



Axonopus aureus Beauv. Ess. Agrost. 12. 1812. Beauvois states that 

 the plant was given him by De Lessert, but does not say whence it came. 

 The specimen could not be found in the Delessert Herbarium. The 

 author's observation " Locustes [spikelets] sont garnies, en-dessous, et 

 en forme d' involucre, de poils court et dores", points conclusively to one 

 of the species with a cluster of golden hairs subtending the spikelets, these 

 having a narrow rachis, not a broad one in which the spikelets are sunken 

 as in A. chrysoblepharis. Following Trinius (Icon. 1: pi. 07. 1828) we 

 take the common species with the smaller and glabrous spikelets to be 

 the true A. aureus. The one with larger, pubescent spikelets, Paspalum 

 canexcenx Xees (in Trin. Gram. Ran. SO. 1826, not Roth. 1821, Panicum 

 chrysodactylon Trim), the type of which was examined in the Trinius 

 Herbarium, has not been found in North America and for the present 

 need not be transferred. The species of this group extending into North 

 America is that called Paspalum aureum by Trinius. 



Paspalum aureum H. B. K. Nov. Gen. & Sp. 1 : 93. 1816. Based on 

 "Axonopus [misspelled Axinopus] aureus Beauv. agrost. p. 12." The 

 species described and illustrated by Kunth (1. c. pi. 27) is A. chrysoble- 

 pharis. 



Digitar ia a urea Spreng. Syst. 1 : 272. 1825. Based on " Paspalum aureum 

 Humb." 



Paspalum exasperatum Nees, Agrost. Bras. 81. 1829. " Habitat ad 

 margines sylvarum prope Ferradas provinciae Bahiensis, in via Felisber- 

 tiana, quae descendit e Minis." The type specimen was examined in 

 the Munich Herbarium. 



Panicum aureum Trin. Mem. Acad. St. Petersb. VI. 3 2 : 196. 1834. 

 Based on "Plaspalum] aureum Trin." 



In North America this species also is known only from Costa Rica. In 

 the National Herbarium are the following: Herb, instit. physico-geogr. 

 nat. costaricensis no. 3305, collected at Pacaca, by Pittier ; no. 3683, col- 

 lected at Buenos Aires by Tonduz; nos. 11003 and 11004, collected at Canas 

 Gordas by Pittier, the latter having an intermixture of A. chrysoblepharis. 



Section Lappagopsis (Steud.). 

 Axonopus dissitiflorus (Trim). 



Paspalum, dissitijiorum Trin. Gram. Pan. 02. 1826. "V. spp. Brasil. 

 (Langsdokpf. ) " The type specimen was examined in the Trinius Herba- 

 rium. 



