Ee a ee ee ee ee 
456 
Thurber of 1850; Wright of 1851 and 1852; Hall of 1872, near Austin): 
NEw Mexico (2. A. Mearns of 1892, Grant Co.): ARIZONA ( Trelease of 
1892; Toumey of 1892, Tucson): COAHUILA (Gregg 125 and 438; Palmer 
of 1880): SAN Luis Porost (Parry and Palmer of 1878): also growing 
in Mo. Bot. Gard. 1893. 
The Lindheimer form described in 1845 is the form with short spines, and is the 
characteristic form of Texas and northeastern Mexico. The original leplocaulis form 
was described from Coulter’s collection, made further south in Mexico, 
98. Opuntia leptocaulis stipata, nom. nov. 
Opuntia frutescens longispina Engelm, and Bigel. Pacif. R. Rep. iv, 56 (1856), 
not O. longispina Haw. Philos. Mag. 109 (1830). 
Young joints stipitate: spines stouter, longer (2.5 to 5 em.), and in 
loose sheaths. (J/1. Pacif. R. Rep. iv, t. 20, f. 2, 3)—Type, specimens of 
Bigelow, Wright, and Thurber in Herb. Mo. Bot. Gard. 
From the Colorado River of Texas to the Colorado of the West and 
southward into Sonora, San Luis Potosi, and Lower California. 
Specimens examined: TEXAS (Bigelow of 1853; Wright 421; Lind- 
heimer 1872; Berlandier 195, 1455, 1828; Reverchon 342, Brownwood ; 
G. BR. Vasey of 1881, El Paso; Carleton 410 of 1891, Oldham County ; 
Evans of 1891): New MeExtco (Wright of 1851; Bigelow of 1853): 
ARIZONA (Bigelow of 1854; Schott of 1855; Palmer 93, 98; Rusby 146 
of 1883, San Francisco Mts.; Toumey of 1892, Tucson; Wilcox of 1894, 
Ft. Huachuca): Sonora (Thurber of 1851): San Luts Porost (Parry 
& Palmer 280): LowER CALIFORNIA (Brandegee of 1889, San Grego- 
rio, Enrique, Agua Dulee): cult. in Mo. Bot. Gard. 1831; also growing 
in same garden in 1893. 
99. Opuntia leptocaulis vaginata Watson, Bibl. Index, 407 (1878). 
Opuntia vaginata Engelm. Wisliz, Rep. 16 (1848), in part. 
Joints 6 to8 mm, in diameter, with rather distinet tubercles 12 to 18 
mm. long: the large spines 2.5 to 6 em. long, dark (mostly black), with 
very loose glistening yellowish or brownish sheaths, and 1 or 2 smaller 
ones added: fruit tuberculate, yellow: seed 4 to 5 mm. in diameter. 
(ill. Pacif. R. Rep. iv, t. 24, f. 1; t. 24, f. 13-15)—Type, specimens of 
Wislizenus in Herb. Mo. Bot. Gard. 
From southwestern Texas to Arizona, and southward into Coahuila 
and San Luis Potosi. 
Specimens examined: TEXAs (Wislizenus of 1837 and 1846; Lindhei- 
mer of 1851; Wright 421): New Mexico ( Wislizenus of 1846; Wright 
1851-52; Bigelow of 1853; H. L. Greene of 1880): ARIZONA (Lemmon 
303): COAHUILA (Gregg 753): SAN LUIS PoTost (Gregg 508): also cult. 
in Mo. Bot. Gard., 1850. 
The mostly solitary very long spines are porrect, standing out on every side of the 
slender stems like great thorns. The leaves are usually quite persistent. 
100. Opuntia ramosissima Engelm. Amer. Journ. Sci. ser. 2, xiv, 339 (1852). 
Opuntia tessellata Engelm, Syn. Cact. 809 (1856). 
fod 
Very bushy from a stout trunk (2.5 to 7.5 em. in diameter) with dark 
