Tas. 6669. 
CEREUS oazspitosus. 
Native of New Mexico and Texas. 
Nat. Ord. Cactex.—-Tribe Ecu1nocactex. 
Genus Cereus, Haworth; (Benth. et Hook. f. Gen. Pl. vol. i. p- 849.) 
Crrevs (Echinocereus) cespitosus; caulibus ovoideis v, ovoideo-cylindraceis soli- 
tariis v. cespitosis 12-18-costatis, areolis elevatis linearibus approximatis, 
Junioribus albo-villosis, aculeis radialibus 20-30 subrecurvis appressis pectinatis 
albis nonnunquam roseis superioribus inferioribusque brevioribus lateralibus 
longioribus centralibus 0 v. paucis, tubo foris pulvillis 80-100 longe cinereo- 
villosis setas apice seu totas fuscas seu nigricantes 6-16 gerentibus stipato, 
sepalis interioribus 18-25 oblanceolatis integris sea denticulatis, petalis 30-40 
obovato-lanceolatis obtusis acutis seu mucronatis ciliato-denticulatis, stigmate 
viridi infundibulari 13-18-partito, bacca viridi ovata perigonio coronata villosa 
setosa denum denudata, seminibus obovatis tuberculatis nigris.— Engel. 
C. cespitosus, Engelm. in Plant. Lindheim. 202; et in Cact. U.S. Mex. Bound. 
Suro, 32, t. 43, 44; Walp. Ann, vol. v. p. 43. 
EcurnocrreEvs cespitosus, Eingelm. in Bot. Wisliz. Exped. 26; Walp, Ann. 
vol. iii. p. 896. 
E. pectinatus, Hort. 
Dr. Engelmann, of St. Louis, the learned and most 
accurate investigator of the Cacti (as of many other groups 
of American plants), says of this species, that it extends 
from the Arkansas river to Saltillo, and has been found as 
far west as the Nueces and San Pedro, and adds that the 
loose darkish wool and slender bristles on the extremely 
numerous (eighty to one hundred) pulvilli of the flower- 
tube, and especially the position of these pulvillim—not in 
the axil, but considerably above it on the sepal, just below 
its foliaceous tip,—distinguish this species from the nearly 
allied H. pectinatus, and from all other Echinocerei known to 
him. And with regard to the name, cespitosus, which 
would apply much better to a number of other species of 
the section Hehinocereus, it was given before any of these 
were known ; it not inaptly represents a common state of 
the plant, when it makes five to twelve heads, but not 
JANUARY Ist, 1883. 
