364 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Chondrosium Desv. Nouv. Bull, Soc. Philom. Paris 2: 188. 1810. Based upon 
Chloris procumbens Durand. 
Actinochloa Willd.; Beauv. Ess. Agrost. 41. 1812. ‘A. tenuis Willd. manuscript” 
mentioned as a synonym of Chondrosium, See also Roem, & Schult. Syst. Veg. 
2:417. 1817. Based upon Chondrosium procumbens Desv. 
Dineba Beauv. Ess. Agrost. 98. 1812. In listing the genera in which the species of 
his proposed genus have been placed Beauvois gives after ‘‘Dineba Deuiu.,’’ Aristida 
first and without doubt had in mind A. americana L. In listing the species he places 
“D. arabica (Cynosurus retroflecus ? Lin.)’’ first and ‘‘ Aristida americana Lin.,’’ fol- 
lowing. In his illustrations he gives D. curtipendula first, followed by D. arabica 
and D. americana, Delile @ figures under D, aegyptiaca the same plant as does Beau- 
vois under D. arabica. But this species does not belong to this group. (See list of 
excluded names, p. 423.) 
Polyodon V1. B. K. Nov. Gen. & Sp. 1: 174, pl. 55. 1816. This is a monotypic 
genus based upon J°, distichum. 
Eutriana Trin. Fund. Agrost. 161. 1820. Based upon Chloris curtipendula Michx. 
Aristidium (Endl.) Lindl. Veg. Kingd. 116. 1846. Futriana, section Aristidium 
Endl., based on Dinebra aristidoides H. B. K. (misspelled “aristoides”’), is listed as a 
genus by Lindley. 
Triplathera (Endl.) Lindl. Veg. Kingd. 116. 1846. Hutriana, section Triplathera 
Endl.,¢ based on Futriana multiseta, is listed as a genus by Lindley. 
Antichloa Sweet; Steud. Nom. Bot. ed. 2. 1: 108.1840. The same as ‘‘Actinochloa’’; 
a name only. 
Nestlera Willd.; Steud. Nom. Bot. ed. 2.2: 192.1841. Based upon N. festucaeformis 
of Willdenow Herbarium, which is Bouteloua bromoides, i. e., B. radicosa, accord 
ing to the Index Kewensis; names only. 
FErucaria Cervantes, La Naturaleza (Mexico) 347, 1870. (See list of excluded 
names, p. 424.) 
“Chondrosia or Chondrosium Desv.;”’ Benth, Journ, Linn, Soc. Bot, 19: 104, 1881, 
Simply a discussion of the general divisions of the group and a mention of Bouteloua 
racemosa Lag. as the best-known species. 
Very variable in every detail; spikes one to 60; spikelets more than 3,4 pectinate 
or not, 2 to several-flowered, mostly 1-flowered, with one or more rudiments; the 
lemmas 3-nerved, 3-awned, the palets 2-nerved, 2-awned., 
1. Bouteloua procumbens (Durand), 
Chloris procumbens Durand, Chlor. Sp. 1808. I am able to verify the opinions of 
some of the older authors from a copy of the original description kindly furnished by 
the Director of the Kew Gardens. 
Chondrosium procumbens Desy. in Beauv. Ess. Agrost. 41. pl. 9. f. 7. 1812. Based 
on ‘‘Chloridis spec. DuRAND.”’ Desvaux ¢ also gives this, the only species, under his 
genus Chondrosium, with Chloris procumbens Durand as a synonym, 
Atheropogon procumbens Jacq. Eclog. Gram. 16. pl. 12. 1813. (Copy in Gray Her- 
barium.) The illustrations and description are good, Chloris procumbens Durand is 
cited as a synonym, 
Bouteloua prostrata Lag. Gen. & Sp. Nov. 5. 1816. A specimen from Lagasca in 
the herbarium at Munich appears to belong here, but the single culm before me has 
two spikes, which is the unusual form of the species. Lagasca listed this species 
@ Descr. Egypte 26. pl. 11. f. 3. 1813. 
b Gen. PI. 94. 1836. 
¢ Trans. Linn. Soc. Bot. 20: 175. 1847. 
@ An exception is found in B. uniflora which has one spikelet in a spike. 
€ Journ, de Bot, 1: 69, 1813. 
