570 GRAMINEZ. 
RuHopE IsLanD and ILLiInois southward.—NortH Mexico, San Luis Potosi ( Schaffner, 
1048); SourH Muxico, Mirador (Schaffner). Hb. Kew. 
3. Diplachne patens, Fourn. Mex. Pl. Enum., Gram. p. 148. 
SovurH Mexico, Vera Cruz (Gouin). 
80. SCLEROPOGON. 
Scleropogon, Philippi in Sert. Mendoc. ii. p. 47; Benth. et Hook. Gen. Plant. i. p. 1177. 
Apparently monotypical, though Bentham and Hooker give the number of species as 
four: one “ Chilian ” and the rest Mexican. 
1. Scleropogon brevifolius, Philippi in Sert. Mendoc. ii. 1871, p.47. (Tab. CI.) 
Tricuspis monstra, Munro; Hemsl. Diag. Pl. Nov. Mex. p. 56. 
Lesourdia karwinskyana et L. multiflora, Fourn. in Bull. Soc. Bot. France, xxvii. 1880, p. 102, 
tt. 3 et 4, et Mex. Pl. Enum., Gram. pp. 188 et 134. 
Scleropogon karwinskianus, < Benth.” ; S. Wats. in Proc. Am. Acad. xvii. p. 181. 
New Mexico.—NortH Mexico, San Luis Potosi and Morales (Schaffner, 1005, 1006), 
region of San Luis Potosi (Parry & Palmer, 925, 949); Sovrn Mexico, Tampico (herd. 
Uzac), cafion de las Minas (Karwinski).—Mznpoza. Hb. Kew. 
After comparing the Mendoza specimen with the Mexican we are convinced that 
they are of the same species, and the late General Munro identified Parry and Palmer’s 
specimens with an authentic one from Dr. Philippi. As to the specimens from the 
‘Texano-Mexican region, neither Munro nor Watson recognized more than one species. 
EXPLANATION OF TAB. CI. 
Fig. 1, portion of a female spikelet with the awns cut off; 2, pale and pistil; 3, pale; 4, ovary; 5, 
a male flower; 6, stamens and lodicules; 7, one of the lodicules: all the figures more or less 
enlarged. 
81. CALAMOCHLOA. 
Calamochloa, Fourn. in Bull. Soc. Bot. France, xxiv. p. 178; Benth. et Hook. Gen. Plant. iii. 
p. 1178. 
A monotype. 
Mr. Bentham failed to identify this genus from Fournier’s description, and we have 
been equally unsuccessful; but judging from the locality recorded, we think it probable 
that it may have been described before. 
1. Calamochloa filifolia, Fourn. in Bull. Soc. Bot. France, xxiv. p. 178, et 
Mex. Pl. Enum., Gram. p. 102. 
NortH Muxtco, San Luis Potosi (Verlet @ Aust). 
82. GYNERIUM. 
Gynertum, Humb. et Bonpl. Pl. Aiquin. ii. p. 112; Benth. et Hook. Gen. Plant. iii. p. 1178. 
An exclusively American genus of three species, inhabiting the warmer regions. 
