422 
Specimens examined: CALIPORNIA (Schott of 1854 and 1855; Hngel- 
mann ol 1580; Nevin of 1881): Texas (Nealley of 1891, at Laredo): also 
cult. at Mo. Bot. Gard. 1876, and growing 1893. 
Dr. Merriam reports this variety as abundant throughout the San Bernardino plain, 
and immense patches of it 40 miles east of Ios Angeles. The habit of growth, very 
fine bristles, and larger seed serve to distinguish it from the species. 
10. Opuntia lindheimeri cyclodes (Engelm.). 
Opuntia engelmanni cyclodes Engelm. Syn. Cact. 291 (1856). 
About 12 dm. high, with orbicular joints 15 to 18 em. in diameter, 
mostly solitary straw-colored (dusky at base) straight and detlexed 
spines, small globose fruit 2.5 to 3.5 em, in diameter, and seeds 4 to 5mm. 
broad with broadly undulate thiekish margins. (JU. Pacif. R. Rep. iv, 
t.8, f 1; t. 22, 18,9)—The type could not be found in the Engelmann 
collection. 
From El] Paso, Texas, to the Upper Pecos and Stein’s Pass in New 
Mexico. 
Specimens examined: New MEx1co (Hvans of 1891, Stein’s Pass): 
TEXAS (Evans of 1891, El Paso). 
11. Opuntia lindheimeri littoralis (Engelm.). 
Opuntia engelmanni littoralis Engelm. Bot. Calif. i, 248 (1876), 
Joints often larger (3 to 4.5 dm. long), with pulvini closer together, 
longer and more slender spines, and smaller seeds.—Type, Tittum and 
Mallinckrodt of 1874 in Herb. Mo. Bot. Gard. 
Coast of southern California and the adjacent islands (reported from 
San Miguel, Santa Rosa, Santa Cruz, and Santa Catalina), 
Specimens examined: CALIFORNIAN ISLANDS (Tittum & Mallinckrodt 
of 1874; Rothrock of 1875, Santa Cruz). 
12. Opuntia chlorotica Engelm, Syn. Cact, 291 (1856). 
Opuntia tidballii Bigel. Pacit, R. Rep. iv, 11 (1856), nomen nudum. 
Krect, 12 to 21 dm. high, forming large bushes, with stems at length 
woody and terete with scaly grayish or light-brown bark and completely 
covered with very numerous straw-colored bristles and yellow spines; 
joints orbicular-obovate, pale glaucous, 15 to 20 em. long and 20 to 25 
em. broad: pulvini about 2.5 em. apart, with very numerous unequal 
bristles, and 3 to 6 (1 to 3 in lower pulvini) unequal angular pale straw- 
colored mostly detlexed spines 2.5 to 5 em. long (the interior shorter 
and erect, 8 to 18 mm. long): flowers yellow, 5 to 7.5 em. broad: fruit 
large (about 4 em. long), ovate: seeds small (2.5 by 3.5 min.), whitish, 
subreniform, thick, with obtuse margin, (ll, Pacif. R. R. iv, t. 6, f. 
1-3)—Type, Bigelow of 1853 and 1854 in Ierb. Mo. Bot, Gard. 
Western Arizona and southeastern California, and extending into 
the Charleston Mountains, Nevada. 
Specimens examined: ARIZONA (Bigelow of 1853 and 1854; Palmer 
of 1877): CALIFORNIA (Bigelow of 1854; Parish 1419, San Felipe). 
The species is readily recognized by the very spiny trunk and very pale broad 
joints. The large and sometimes spreading bushes often bear 100 or more joints 
