ad 
aan 
21 
depressus; costis. 13-27 acutis undulatis; areolis cordatis; aculeis 
robustis annulatis, plus minus curvatis rubellis, radialibus 6-7 infimo 
deficiente, centrali singulo robustiore compresso decurvato ; floribus 
roseis dense lanatis ; petalis laciniatis aristatis ; bacca coccinea lana- 
ta ; seminibus lzevibus lucidis. 
Southern Texas, and Northeastern Mexico, from the Colorado to 
Saltillo; not westward beyond the San Pedro River: fl. April and 
May. — Heads 8 ~ 12 inches in.diameter, flat, or very old ones some- 
times globose ; spines from }-—2 inches long. Flowers about 2 inches 
long. 
§ 3. Theloidei, Salm. 
18. EK. sicovor, Gal., var. Scnorri, E. in B.C. R.: ovatus; costis 
8 obtusis interruptis ; aculeis radialibus 15-17 rectis, summis 2-4 
longioribus latioribus compressis, centralibus 4, summo latiore longi- 
ore ; floribus majoribus purpureis. 
Mier, on the Rio Grande : fi. September. — Plant 4-6 inches high, 
2-3 in diameter; upper radial spines about 1 inch, upper central 
one 1} inches long ; lower radial and central spines reddish variegated. 
Flower 2-3 inches long, bright purple or rose-colored. — Distin- 
guished from the Mexican £. bicolor, principally by the larger num- 
ber of radial spines, and the greater length of the upper central spine, 
which is carinate underneath. 
§ 4. Intertexti. 
19, E. intertextus, E. in B. C. R.: minor, ovato-globosus; cos- 
tis 13 acutis interruptis; tuberculis sulcatis; aculeis rigidis rubellis 
apice fuscatis, radialibus 16-25 arcte adpressis, superioribus 5~9 
tenuioribus subfasciculatis, infimo robusto brevi; centralibus 4, superi- 
oribus 3 radiales superiores excedentibus cum iis implicatis, inferiore 
singulo abbreviato porrecto ; floribus parvis in vertice dense lanato 
congestis roseis; bacca vix —— sicca; seminibus lucidis sca-- 
phoideis. 
Var. 8. DAsYAcANTHUS, E.1.c.: ovatus; aculeis setaceis longiori- 
bus purpureo-czesiis, radialibus patulis, centrali inferiore ceteris paullo 
breviore. 
From El Paso to the Limpio, and southward to Chihuahua: var. 6. 
more common about El Paso: fl. March and April. — Plant 1 to 4, 
the var. 8. even 6 inches high, 1~3 in diameter ; spines 2-6, cen- 
tral ones 1~9 lines long, in 8. 6—8 and central spines 9 — ]] lines 
long. Flower about 1 inch long. Fruit 4 lines in diameter. 
