375 
20 to 24 mm. long: flowers (from shrivelled specimens) about 2.5 em. 
long and probably pale-red: fruit unknown. (Zl. Cact. Mex. Bound, t. 
35, figs. 6-8)—Type, Wislizenus of 1847 in Herb. Mo. Bot. Gard. 
Chihuahua, about Pelayo. 
Specimens examined: CHIHUATIUA (Wislizenus of 1847). 
“The large recurved spines, especially the stoutest central one, which is of a 
bluish horn-color, with a brown point, and is curved ond bent downward like a 
large fang, cover the whole surface of the plant, and give it a very pretty appear- 
ance.” The fruit and seed characters of the original description were taken from 
fruits collected by Dr. Gregg about San Lorenzo (Chihuahua), which Dr, Engelmann 
at the time did not doubt belonged to this species, but which afterwards proved to 
belong to /. uncinatus. The prominent tubercles have the woolly groove character- 
istic of Coryphanths. This species has been referred to intferlerctus, but is probably 
distinct. 
45. Echinocactus intertextus Nngelm. Syn. Cact. 277 (1856). 
Ovate-globose, 2.5 to 10 em, high: ribs 15, acute, somewhat oblique, 
tuberculate-interrupted, the tubercles with a woolly grove: spine short 
and rigid, reddish from a whitish base and with dusky tips; radials 
16 to 25, closely appressed and interwoven, the upper 5 to 9 setaceous 
and white, straight, 5 to 12 mm, long, the laterals more rigid and a 
little longer (8 to 14 mm.), the lowest stout and short (4 to 8mm.), a 
little recurved; centrals 4, the 5 upper ones turned upward and 
exceeding the radials and interwoven with them (10 to 18 mm. long), 
the lower one very short (2 to 4mm.), stout and porrect: flowers about 
25cm. long and wide, purplish: fruit globose, dry, about 8 mm. in 
diameter: seeds reniferm, slightly rough and shining, about 2 mm. long. 
(ZU, Cact. Mex. Bound. t. 34)—Type, specimens of Wislizenus and 
Wright in Herb. Mo. Bot. Gard, 
From the Pecos River, Texas, westward to El Paso and southward 
into Chihuahua. 
Specimens examined: TEXAS (Wright of 1851, 1852; Engelmann): 
CHINUAIUA (Wislizenus of 1546), 
46. Hchinocactus intertextus dasyacanthus Engelm. Syn, Cact. 277 (1856). 
Ovate or conical, becoming 15 em, high: spines slender, longer, more 
ashy; radials 19 to 25, setaceous and in many series, 12 to 16 mm. long, 
the 7 to 9 upper ones more slender, shorter, whitish, and fascicled; 
centrals scarcely stouter, 18 to 22 mm, long, the upper 3 exceeding the 
rest, the lowest one porrect and but little shorter. (ZU. Cact. Mex, 
3ound. t. 35, figs. 1-5)—Type, specimens of Wright in Herb. Mo. Bot. 
Gard. 
From the region about E1 Paso, Texas, and contiguous New Mexico, 
southward into Chihuahua and San Lis Potosi. 
Specimens examined: TEXAS (Lindheimer of 1844; Wright of 1851, 
1852; Engelmann; Lemmon of 1881); New Mexico (vans of 1891, at 
Rincon; Neally of 1891): CiUiUAHUA (Hevans of 1891, at Juarez): SAN 
Luis Porost (Mschanzier of (S91). 
Very closely resembles Cactus dasyacanthus and might be mistaken for it. 
