365 
18. Echinocactus pilosus pringlei, var. nov. 
. Differs in that the radial spines are represented by 3 or 4 flexuous 
spines at upper edge of pulvinus and 4 or 5 at lower edge; centrals 6 
or 7: flowers 3.5 to 4 em. long, brownish-red.—Type, Pringle 154 in 
Herb. Gray. 
Coahuila. 
Specimens examined: COATUILA (Pringle 154, distributed as pilosus), 
+ + Spines dissimilar; radials subsetaceous; centrals angled or terete or sometimes Sflat- 
lish, generally at least one hooked at apex and often becoming much elongated.—HAMATI, 
~* Central spines annulate. 
19. Echinocactus hamatocanthus Muhlenpf. Allg. Gart. Zeit. xiv, 3871 (1846). 
Echinocactus longihamatus gracilispinus Engelm, Syn. Cact. 273 (1856). 
Echinocactus hwmatochroanthus Hemsl. Biol. Centr. Amer, i, 532 (1886). 
Subglobose or at length ovate, 1.5 to 6 dm, high (flowering often when 
not more than 5 cm. high): ribs 15 to 17, often oblique, broad, and 
obtuse, tuberculate-interrupted: spines 16 to 20, purplish or variegated 
when young, at length ashy; radials 12 to 14, spreading, straight, 
curved, or flexuous, the upper and lower ones 2.5 to 7.5 em. long, the 
laterals 5 to 10 cm,; centrals 4 to 8, angulate-compressed, the upper 
ones turned upwards, straight or curved or twisted, 5 to 12 em. long, 
the lowest one stouter, elongated (7.5 to 16.5 em.), hooked and often flex- 
uous, porrect or deflexed: flowers 6.5 to 9 cm. long, yellow tinged with 
red (usually yellow within and red without): fruit ovate, green (?), 2.5 
to 5 em. long: seeds globose-obovate, 1.4 to 1.6 mm. long, pitted.—Type 
unknown. 
From the Texan region of the “Great Bend” to the vicinity of Presi- 
dio del Norte and the mountains of the Limpia, but apparently not so 
far west as E] Paso. 
Specimens examined: TENAS ( Wright 225 of 1849, 764 of 1853; Bige- 
low of 1852). 
Dr, Havard says that the ripe fruit is red, and ‘fas delicious as that of the straw- 
berry cactus.” In this case, the * green” fruit of the collectors is simply the color of 
immaturity. 
20. Echinocactus hamatocanthus longihamatus (Gal.), 
Echinocactus longihamatus Gal.; Pfeiff. Abbild. ii, t.16 (1843-50). 
Echinocactus flecispinus Kngelm. Wisliz. Rep. 27 (1848), not Salm (1850). 
Echinocactus setispinus longihkamatus Poselger, Allg. Gart. Zeit. xxi, 119 (1853). 
Kehinocactus longihamatus crassispinus Kngelm. Syn, Cact, 273 (1856). 
Spines much more robust; radials 8 to 11; centrals 4, angled, the 
lowest one flexuous and more or less hooked. (JU. Cact. Mex. Bound. 
t. 21-24)—Type unknown. 
From the “Great Bend” region of Texas southward through Chi- 
huahua, Durango, Coahuila, and Nuevo Leon; said by Hemsley to 
oceur in southern Mexico. 
Specimens examined: TEXAS ( Nealley of 1891; Evans of 1891): CHI- 
HUAHUA ( Wislizenus of 1847, type of flexispinus Engelm.): DURANGO 
