SYNOPSIS OF THE CACTACEZ OF THE UNITED STATES. 135 
San Felipe, on eastern slope of the California mountains: flowers in June. — The largest specimens seen 
were 3 feet high and 1 foot in diameter; the branches or young single plants are globose. Radial spines 1-2 inches 
long ; central spines 1-1} lines broad, about 2 inches long. Similar to the last, but well distinguished by the 
characters indicated. 
* * Eriocarpi. [276] 
14. E. poLycepHatts, E. & B. in P. R. R.: ovatus sen demum cylindricus, e basi ramosus; costis 13-21 acutis ; 
aculeis robustis compressis annulatis plus minus curvatis rubellis, radialibus 4-8, infimo deficiente, superioribus (si 
exstant) gracilioribus ; centralibus 4 angulatis compressis, superiore latiore nea Be sursum curvato, inferiore 
longiore decurvo; floribus flavis dense lanatis ; bacca sicca; seminibus magnis angula 
On the Mojave, Colorado, and Gila rivers: flowers February and March. — pina only when young, forming 
bunches of 20-30 cylindric equal-sized heads when older ; the largest seen were 2-2} feet high and about 10 inches in 
diameter. Exterior spines 1-2, interior ones 15-3} inches long. — Shape very much like the last, but the flower very 
distinct. 
5. E. Parryt, H. in B. C. R.: simplex, globosus vel depressus ; costis 13 acutis ; aculeis robustis angulatis 
annulatis albidis, radialibus 8-11, rectis s. paullo curvatis superioribus gracilioribus, infimo deficiente, centralibus 
paullo longioribus robustioribus, infimo longiore decurvo ; bacca sicca dense lanata. 
West and southwest from El Paso.— Plant always single; largest specimens 8-12 inches high by 10-15 in 
diameter. — Very similar to the last, but apparently distinct by the manner of growth and the white spines. Unfortu- 
nately, no seeds were collected, 
16. E. HORIZONTHALONIUS, Lem., var. CENTRISPINUS, E. in B. C. R.: glaucus, depressus seu demum ovatus ; 
costis 8 obtusissimis latissimis ; noacia: orbiculatis basi truncatis ; aculeis robustis compressis annulatis recurvatis 
rubellis demum cinereis, radialibus 5-7 superioribus debilioribus, infimo deficiente, — singulo robustiore 
seins: floribus purpureis dense lanatis ; bacca sicca lanata; seminibus magnis angula 
ofiana, above El Paso, to the Pecos, and southward: flowers April and = a — as var 2-8 inches Pain 
and 3-6 in diameter. Spines 3-1} Sudhes long, nearly equal. Flower 23 inches long, but partly enveloped in dense 
wool. The original £. horizonthalonius is said to have no central spine, and linear-lanceolate acuminate pale rose- 
colored petals: in our plant the petals are oblong-lanceolate and obtuse. 
17. E. Texensts, Hopf., EZ. Lindheimeri, E. in Plant. Lindh. 1845: depressus; costis 13-27 acutis [277] 
undulatis ; areolis cordatis; aculeis robustis annulatis, plus minus curvatis rubellis, radialibus 6-7 infimo 
eficiente, centrali singulo robustiore compresso decurvato; floribus roseis dense tis; petalis laciniatis aristatis ; 
bacca coccinea lanata ; seminibus levibus lucidis. 
Southern Texas ‘ad northeastern Mexico, from the Colorado to Saltillo ; not westward beyond the San Pedro 
River: flowers April and May. — Heads 8-12 inches in diameter, flat, or very old ones sometimes globose; spines 
from 3-2 inches long. Flowers about 2 inches long. 
§ 3. THELOIDEI, Salm. 
18. E. Bicotor, Gal., var. ScHorrm, E. in B.C. R.: ovatus; costis 8 obtusis interiaiptis’s aculeis radialibus 
15-17 rectis, summis 2-4 sc iedies latioribus compressis, centralibus 4, summo latiore longiore ; floribus majoribus 
purpare 
Mier, on the Rio Grande: flowers 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 vores or rose-colored. — Distinguished from the Mexican E. bicolor principally by the larger number of 
radial spines, and the greater length of the upper central spine, which is carinate underneath. 
§ 4. INTERTEXTI. 
19. E. rntertextvs, E. in B. C. R.: minor, ovato-globosus ; costis 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, superioribus 3 radiales superiores excedentibus cum iis implicatis, inferiore singulo 
abbreviato porrecto; floribus parvis in vertice dense lanato congestis roseis ; bacca vix squamata sicca ; seminibus 
lucidis scaphoideis. 
Var. 8. DASyacanTHus, E. 1. c.: ovatus; aculeis setaceis longioribus purpureo-ceesiis, radialibus patulis, centrali 
inferiore ceteris paullo breviore. 
From El Paso to the Limpio, and southward to Chihuahua: var. 8. more common about. El Paso: flowers 
March and April. — Plant 1-4, the var. 8. even 6 inches high, 1-3 in diameter. Spines 2-6, central ones 1-9 lines 
long ; in 8. 6-8, and central spines 9-11 lines long. Flower about 1 inch long. Fruit 4 lines in diameter. 
