ECHINOCEREUS. 
25 
Collected by Rose and Standley at Big Springs, Texas, February 23, 1910 (No. 12215). 
This is a very beautiful species which flowers abundantly in cultivation. If heretofore 
collected, it has doubtless passed as the next species to which it is related. Rose and 
Standley, who discovered it wild in 1910, also found 
it in cultivation in Texas. 
Figure 24 is from a photograph of the type 
specimen. 
33 . Echinocereus reichenbachii* (Terscheck) Haage 
jr., Index Kewensis 2:813. 1893. 
Echinocactus reichenbachii Terscheck in Walpers. 
Repert. Bot. 2: 320. 1843. 
Cereus caespitosus Engelmann, Bost. Journ. Nat. Hist. 
5: 247. 1845. 
Echinopsis pectinata reichenbachiana Salm-Dyck, Cact. 
Hort. Dyck. 1844. 26. 1845. 
Echinocereus caespitosus Engelmann in Wislizenus, 
Mem. Tour North. Mex. 110. 1848. 
Cereus caespitosus caslaneus Engelmann, Bost. Journ. 
Nat. Hist. 6: 203. 1850. 
Cereus reichenbachianus Tabouret, Monogr. Cact. 318. 
1853. 
Cereus reichenbachianus caslaneus Labouret, Monogr. 
Cact. 319. 1853. 
Cereus caespitosus minor Engelmann, Proc. Amer. 
Acad. 3: 280. 1856. Fig. 24. — Fchinocereus perbellus. 
Cereus caespitosus major Engelmann, Proc. Amer. 
Acad. 3: 280. 1856. 
Echinocereus texensis Jacobi, Allg. Gartenz. 24: no. 1856. 
Mammillaria caespitosa A. Gray, First Lessons in Botany 96. 1857. 
Echinocereus rotatus Linke, Wochenschr. Giirtn. Pflanz. 1: 85. 1858. 
Echinocereus caespitosus caslaneus Riimplerin Forster, Handb. Cact. ed. 
2. 811. 1885. 
Echinocereus caespitosus major Riimpler in Forster, Handb. Cact. ed. 2. 
811. 1885. 
Echinocereus pectinatus caespitosus Schumann, Gesamtb. Kakteen 272. 
1898. 
More or less cespitose; stems simple, globose to short-eylindrie, 
2.5 to 20 cm. long, 5 to 9 cm in diameter; ribs 12 to 19; areoles approxi¬ 
mate, elliptic; spines 20 to 30, white to brown, but usually those of each 
individual plant of one color, pectinate, interlocking, 5 to 8 mm. long, 
spreading, more or less recurved; centrals 1 or 2, like the radials, or 
often wanting; flowers fragrant, rather variable as to size, often 6 to 7 
cm. long and fully as broad, opening during the day, always closing at 
night and sometimes opening the second day, light purple, often re¬ 
flexed; perianth-segments narrow, the margin more or less erase; 
filaments pinkish; fruit ovoid, about 1 cm. long; seeds black, nearly 
globose, 1.2 to 1.4 mm. in diameter. 
Type locality: Mexico. 
Distribution: Texas and northern Mexico; recorded from 
western Kansas. 
The plant grows in a limestone country, usually among rocks. 
Brandegee in 1876 reported Cereus caespitosus castaneus from 
the mesas of Saint Charles, south of Pueblo, Colorado, but we Fig. 25.—Echinocereus reichen- 
have seen no specimens. The species is not credited to Colorado 
in recent manuals. We have seen specimens from as far south as Saltillo, Mexico (Runyon, 
1921). 
Cereus concolor Schott (Pac. R. Rep. 4: Errata and Notes 11. 1856) is referred here by 
Coulter. The original description indicates a very different plant and it is surprising 
* According to Walpers, the specific name is reichenbachii, but Labouret, when he transferred it to Cereus, changed 
it to reichenbachianus and this spelling is used in the Index Kewensis where the plant is taken up under Echinocereus. 
ere the binomial is credited to Engelmann. 
Ih 
