■&'<&*'/■ 3 /. 
tf.e.rtc/>.T. &Yr /■ H 
South of the Rio Grande, Chihuahua, &c.— The var. /3. from Mon¬ 
terey may belong either here or to the next species. The var. y. 
from Sonora, without any central spines, and with very rigid radial 
ones, 1-4J lines long, is not yet sufficiently known to decide about 
its affinities. • 
6. C. C2ESPITOSUS, E. in PI. Lindh. 1845 : ovato-cylindricus, 12 - 
18-costatus ; aredlis lanceolatis; aculeis radialibus 20 - 30 rectis seu 
subrecurvis pectinatis albidis, centrali nullo vel raro, uno alterove bre- 
vissimo; tubo floris purpurei pulvillis 80 - 100 aculeolos capillares 
6-12 obscuros lanamque longam cineream gerentibus dense stipato. 
Yar. a. minor : aculeis brevioribus gracilioribus non intertextis; 
floribus minoribus. 
Yar. /3. major : aculeis longioribus robustioribus intertextis ; flori¬ 
bus majoribus. 
Yar. y. castaneus : aculeis rubellis seu castaneis. I 
From the Canadian near Delaware Mount, to the Rio Grande, and 
south to Monterey ; west not farther than the San Pedro River: fl. in 
May and June. — This species, now not rare in cultivation, seems to 
be-sufficiently distinct from the preceding, and may always be recog¬ 
nized by the characters indicated. 
7. ? C. adustus, E. in Wish Rep.: ovatus, 13 - 15 costatus ; areo- 
lis ovatis seu ovato-lanceolatis; aculeis radialibus 16-20 adpressis 
albidis apice adustis, lateralibus inferioribusque ldngioribus, summis 
setaceis brevissimis, centrali nullo seu valido porrecto atrofusco. 
Mountains west of Chihuahua : flower and fruit unknown. — Echi- 
nocereus radians , E. is the form with stout central spines. 
8. ? C. rufispinus, E. 1. c.: ovato-cylindricus, 11-costatus ; areolis 
lanceolatis; aculeis radialibus 16- 18 adpressis intertextis, lateralibus 
cseteris multo longioribus fuscis recurvatis, centrali singulo valido 
fusco porrecto; flore infundibuliformi, tubo fcubelongato, limbo pa- 
tulo; stigmatibus 8 tenuibus albidis. 
Mountains west of Chihuahua: fl. in May. —Stem four inches 
high : radial spines 4-9 lines, central one about an inch, long. 
Flower different from that of all other Echinocerei in the length of 
the tube (over 2 inches long, and half as wide) and the whitish stig¬ 
mata. Seejms to form a transition to otjier sections of the genus. 
9. ? C. longisetus, E. in B. C. R.: subsimplex, ovato-cylindricus ; 
costis 11 — 14 tuberculatis ; areolis orbiculatis; aculeis setaceis albis, 
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