194 Notes on Cactee. [ZOE 
Collected by Mr. T.S. Brandegeein Sierra de la Laguna, and 
Sierra San Francisquito in September and October, 1899, and 
later in the same general region by Dr. C. A. Purpus. 
Mamillaria lenta. Cespitose by dichotomous branching form- 
ing nearly flat-topped masses, the body thick and fleshy, the 
divisions 3-5 cm. in diameter and probabiy 1-2 cm. above 
ground: tubercles slenderly conical, about 1 cm. long, light 
green; areole not woolly; spines all spreading and all alike 
excepting that the later formed are yellow in the center of 
young tubercles, they are so soft and fragile as to be difficult to 
count, but appear to be 30-40 in number; axils with short per- 
sistent wool and an occasional bristle; flowers not seen, fruit 
clavate, red, 1 cm. long, few-seeded; seeds dull black, more than, 
1 mm. long, tuberculate not punctate, strongly constricted above 
the hilum, the upper part globose. 
Collected by Dr, C. A. Purpus on rocks near Viesca in 
Coahuila, January, 1904. 
OPUNTIA BRADTIANA (Coult.) For this plant Prof. Schumann 
adopts the name cereiformis. The history given below shows 
that the oldest descriptions, both under Cereus and Opuntia, 
belong to Bradtiana. 
Grusonia cerciformis Hort. Nicolai, nomen nudum 1894 
Grusonia cereiformis, M. J. K., iv, 116, no notice or description 
whatever of the plant—a dissertation by Dr. Schumann on the 
impropriety of catalogue names. 
Cereus Bradtianus Coult. Cont. Nat. Mus., ili, 406, (April, 1896) 
Grusonia cereiformis M. J. K., vi, 127, (August, 1896). Herr 
Liebner announced that the plant to which this name had been 
given was growing and was undoubtedly an Opuntia, as it 
showed the characteristic leaves, 
Grusonia cereiformis Reichb. Jun. M. J. K. vi, 177, (Decem- 
ber, 1896) Schumann writes on seeing the plant growing in 
Rebut’s collection; that there is on account of the leaves a 
“growing probability” of its belonging to Opuntia. 
— aan Brandegee, Erythea v, 121 , (Nov. 24, 1897.) 
Opuntia cereiformis Weber in Bois’ Dict. 897. March, 1808. 
