389 
Palmer of 1870; Brandegee of 1889, San Julio): Sonora (Schott of 1855): 
also growing in Missouri Botanic Garden in 1893, 
Dr. Merriam reports that this is the ‘‘most widely-diffused Cereus over the deserts 
of southern Nevada and southeastern California.” Mr, Brandegee reports it from San 
Julio and San Pablo, Lower California. 
19. Cereus engelmanni variegatus Engelm. Syn. Cact. 283 (1856). 
The 3 upper central spines recurved, divaricate, black and white 
mottled, the lower one longer, white and decurved: fruit 1.2 to 1.6 mm. 
long. (JU. Pacif. R. Rep. iv, t. 5, f. 4-7)—Type, Bigelow of 1854 in 
Herb. Mo. Bot. Gard. 
From Utah and Nevada southward into Arizona and southeastern 
California, . 
Specimens examined: Uran (Johnson of 1870; Mrs. Thompson of 1872; 
Parry of 1874; Palmer of 1877): NEVADA (Gabb of 1867): ARIZONA 
(Bigelow of 1854; Coues and Palmer of 1865): CALIFORNIA (G. BR. Vasey 
of 1880, San Diego Co.; Coville d& Funston 187, Death Valley Exped.; 
Trelease of 1892). 
20. Cereus engelmanni chrysocentrus Mngelm. Syn. Cact. 283 (1856). 
More cylindrical: areole 12 to 14 mm. apart: upper radial spines 6 
to 10 mm. long, lateral 10 to 14 mm., lower 14 to 24 mm.; the three or 
four upper centrals 5 to 7.5 cm. long, very stout and erect, deep golden 
yellow, the lower one shorter (3.5 to 6 em.,), white, flattened and 
detlexed. (Ill. Pacif. R. Rep. iv, t. 5, f. 8-10)—Type not found in the 
Engelmann collection, and probably lost. 
Deserts of southeastern California. 
Specimens examined: CALIFORNIA (Coville & Funston 154, Death 
Valley Exped.). 
The whole series of engelmanni forms is exceedingly variable as to color, and rela- 
tive length and stoutness of the central spines, and forms are frequently found inter- 
grading between the three here recognized, 
21. Cereus brandegei, sp. nov. 
Size, habit, and number of ribs unknown: ribs tuberculate, with 
areole 10 to 15 mm. apart: spines at first variegated, dark and reddish, | 
becoming more or less ashy-black; radials 10 to 16, rigid, terete, radi- 
ant, mostly uniform, 8 to 12 mm. long; centrals almost always 4, very 
stout and prominent, 3 to 6 em. long, eruciate, conspicuously angled 
and compressed, sometimes twisted, the lowest usually the most flat- 
tened and sword-like (2 to 3 mm. broad): flowers red, 4 to 5 cm. ‘long, 
with conspicuous woolly and spine-bearing areolie over the ovary and 
lower part of the calyx: ripe fruit not seen.—Type in Herb, Brandegee. 
Lower California, El] Campo Allemand and San Gregorio. 
Specimens examined: LOWER CALIFORNIA (Brandegee of 1889). 
22. Cereus stramineus Engelm. Syn. Cact. 282 (1856). 
Ovate-cylindrical tapering toward apex, 12.5 to 22.5 em. high and 5 
to 7.5 cm. in diameter, cespitose-glomerate (often 100 to 200 heads in 
