23 
20 cum superioribus 5-10 setaceis plerumque albidis; centralium 
3-5 superioribus 2 brevioribus purpurascentibus, inferioribus 1-3 
longioribus deflexis albidis ; floribus in caule inferiore lateralibusr e 
flavo virescentibus minoribus; baccis parvis; seminibus tuberculato- 
scrobiculatis. ♦ . 
Common about.El Paso : fl. April. — Stems 3-10 inches high, 
11 - 2 inches in diameter ; radial spines 2-5, central ones 9 - 15, 
lines long. Flowers very similar to those of the last species, but 
seeds different. 
* # Flavijlori. 
3. C. dasyacanthus, E. in Wish Rep.: subcylindricus,'simplex 
vel e basi ramosus; costis 16-21 ; areolis ovatis ; aculeis 20-30 
patulis cinereis apice ssepe rubellis, interioribus 3-8 paullo robustio- 
ribus deflexis ; floribus subterminalibus magnis ; bacca subglobosa; 
seminibus tubereulatis. « 
- 3fri. - yv . ft- .anil lek p aiirlorihiia j-J ra^ 
Common about El Paso: fl. April. — Plant 5 - 12 inches high, 
densely covered with numberless spines. Flowers 3 inches wide, yel¬ 
low, an uncommon color in Cera. Fruit an inch in diameter;^ 
Hraav^-only^-haj£ti£' dar go;— '—■» 
4. C. ctenoides, E. in B. C. R.: subsimplex, ovatus, 15-costatus ; 
areolis lanceolatis^ aculeis albidis, radialibus 14-20 pectinatis, cen- 
tralibus 2-3 uniseriatis brevibus ; floribus magnis. 
Eagle Pass on the Rio Grande : fl. June. — Plant 2-4 inches high, 
thick in proportion ; spines 1-4 lines long. Flower large. — Simi¬ 
lar to, the last, but distinguished by the characters given, which, with 
the exception of the yellow flower, bring it close to C. pectinatus. 
# # * Riibrijlori. 
5. C. pectinattts, E. (Echinocactus pectinatus, Scheid.): ovator 
cylindricus, 18 - 23-costatus ; areolis lanceolatis ; aculeis radialibus 
16-20 subrecurvis pectinatis apice rqseis, centralibus 2-5 brevissi- 
mis uniseriatis; tubo floris purpurei pulvillis 60 - 70 aculeolos rigidos 
10-15 gerentibus stipato. 
Var. ft.? armatus, Poselg.: costis 15-16; aculeis radialibus 
16-20, centrali singulo cseteris longiore. 
Var. y. ? rigidissimtjs, E. in B. C. R.: costis 20-22; aculeis e 
basi bulbosa subulatis rigidissimis albidis seu rubellis 15 - 22 centrali¬ 
bus nullis; florum subverticalium tubo pulvillis 80 - 100 dense stipato. 
