Chase — Notes on Genera of Panicecs. IV. 109 



Racemes 2, digitate, one pistillate, the other staminate, 



the spikelets solitary 51. Mniochloa. 



Plants dioecious 52. Spinifex. 



1. Genus LEPTOOORYPHIUM Nees.* 



Leptocoryphium Nees, Agrost. Bras. 83. 1829. Two species are included, 

 L. lanatum Nees, based on Paspalum lanatum H. B. K., and L. molle 

 Nees, the first named being here taken as the type of the genus. 



2. Genus ANTHAENANTIA Beauv. 



Anthaenantia Beauv. Ess. Agrost. 48. pi. 10. f. 7. 1812. Based on a 

 single species, Phalaris villosa Micbx. This name is spelled Anthenantiar 

 by Robert Brown (in Flinders, Voy. App. 2: 3 582. 1814) and Athenantia + 

 by Kunth (Mem. Mus. Paris 2:71. 1815). 



Aulaxanthus Ell. Bot. S. C. & Ga. 1:102. 1816. Two species, A. 

 ciiiatus Ell. and A. rufus Ell., the first named of which is here taken as 

 the type, are included. The type of A. ciiiatus, in Elliott's herbai'ium, 

 is Anthaenantia villosa (Michx. ) Benth. Elliott refers " Phalaris villosa? 

 Michx." to A. ciiiatus. With the later fascicles of Elliott's work an 

 illustration of A. rufus (pi. 6. f. l),was given, but since this was not 

 published until 1821 the first species published under the genus is taken 

 as the type. 



Aulaxia Nutt. Gen. PL 1 : 47. 1818. This is based on Aulaxanthus 

 Ell., Elliott's description, slightly altered, being used and his species 

 cited. Steudel (Nom. Bot. ed. 2. 1: 171. 1840) spells the name Aulaxis. 



«Tf^ 3. Genus VALOTA Adans. * ^U^^^^ 



Valota Adans. Fam. PI. 2:495. 1763. This genus is established by a 

 reference to " Sloan, t. 14. f. 2." This figure identifies the genus with 

 Andropogon insulare L. (Syst. Nat. ed. 10. 2:1304. 1759). The type of 

 the latter in the Linnaean Herbarium is from Jamaica, sent by Browne. 

 After his diagnosis Linnaeus cites "Sloan, jam. t. 14. f. 2." Steudel 

 (Nom. Bot. ed. 2. 2:744. 1841) spells the name Vallota. 



Acicarpa Raddi, Agrost. Bras. 31. pi. 1. f. 4. 1823. This is based on a 

 single species, A. sacchariflora Raddi, the figure and description of 

 which identify it with Valota insularis. Raddi also cites "Sloan. H. 

 jam. I. p. 43. t. 14. fig. 2)." 



Trichachne Nees, Agrost. Bras. 85. 1829. Six species are included in 

 the genus, T. insularis Nees which is taken as the type, based on Andro- 

 pogon insulare L., T. sacchariflora (Raddi) Nees, which we now know to 



* The group containing the first five genera here given was earlier discussed and 

 the fruit of the type species figured (Proc. Biol. Soc. Wash. 19:183-192.1906). Only a 

 summary of that discussion is here given, with such additional knowledge as has been 

 gained. 



+ These misspellings or changes of spelling are here given only because. these names 

 have found their way into synonymy, hence must be accounted for. 



