394 
culate, with wide and shallow grooves, and areolz 16 to 20 mm. apart: 
spines stout from a bulbous base, straight or somewhat recurved, radi- 
ant, 18 to 32 mm. long; radials 3 to 6 (rarely 7), reddish or dark, the 
lowest one paler, all at length blackish; central none, or very rarely a 
stout subangular one, 30 to 40 mm. long, reddish-black, turned upward 
or porrect: flowers purplish-red (when dry), broadly funnelform, 4 em. 
long, with a flaring mouth 2.5 to 3 em, across: fruit unknown: seeds 
obliquely obovate, tuberculate, 14 to 1.6 mm. long. (ZU. Cact. Mex. 
Bound, t. 56)—Type, Wright of 1849 in Herb. Mo. Bot. Gard. 
On rocks and gravelly limestone hills, from the San Pedro, Texas, to 
the mouth of the Pecos; also found near Durango, Col. 
Specimens examined: TExAs (Wright of 1349): CoLorapo (Alice 
Kastwood of 1890, Durango): also cultivated in Missouri Botanic 
Garden in 1870, 
Distinguished from its allies by its few ribs and- few dark spines. The specimens 
of Miss Eastwood supplied the first flowers recorded. 
33. Cereus gonacanthus Kngelm. Syn. Cact. 283 (1856). 
Ovate, 7.5 to 12.5 em. high, simple or sparingly branched at base: 
ribs 7 (sometimes 9), tuberculate, with large areola 12 to 20 mm. apart: 
spines stout, angular, straight, or variously curved and flexuous; radi- 
als 8, lower 16 to 24 min. long, the rest 20 to 30mm. long, lower and 
laterals quadrangular, yellow at base and often dark-tipped, upper- 
most one much larger than the rest, about size and character of the 
central, which is solitary, very stout, 6- or T-angled, and deeply fur- 
rowed, often flexuous, 3 to 6 cm, long, 2 mm. broad: flower scarlet, 
about 6 cm, long: fruit and seed unknown, (J/L. Pacif. R. Rep, iv, t. 5, 
f. 2 and 3)—Type, Bigelow of 1853 in Herb. Mo. Bot. Gard. 
Southern Colorado and northern New Mexico; found originally on 
bigh sand bluffs, under cedars, near Zuni. 
Specimens examined: COLORADO (Greene of 1873; Engelmann of 
1874; Brandegee ot 18+4): New Mexico (Bigelow of 1853; Palmer 
134, Ft. Defiance). 
Distinguished from triglochidiatus by its stouter, longer, and more numerous 
spines. 
34. Cereus triglochidiatus Kngelm. Pl. Fendl. 50 (1849). 
Eehinocereus triglochidiatus Engelm. Wisliz. Rep. 9 (1848). 
Ovate-cylindrical or globose, 5 to 15 em. high, 5 to 7.5 em. in diame- 
ter, sparingly branched: ribs 6 or 7, undulate, sharp, with very shal- 
low grooves, and areole often 3 em, apart: spines 3 to 6 (mostly 3), 
stout, compressed and angular, loosely radiant, straight or curved, 
ashy-gray, the two laterals 16 to 28 mm. long, the other 12 by 16 mm, 
long and bent downward: tlowers deep-crimson, 5 to 7.5 em. long: 
fruit unknown, but said to be edible. (IU. Pacif. R. Rep. iv, t. 4, f. 6 
and 7)—Type, Wislizenus of 1846 in Herb. Mo. Bot. Gard. 
Rocky canyons and mountains, from east of the Pecos, Texas, north- 
