THE CACTACEAE. 



A number of varieties of this species appear in literature, of which we may mention 

 the following: minor Pfeiffer (Enum. Cact. 169. 1837); schomhurgkii Salm-Dyck (Cact. 

 Hort. Dyck. 1849. 74. 1850); spinosior Salm-Dyck (Hort. Dyck. 184. 1834); tenuifolia 

 Forbes (Hort. Tour Germ. 159. 1837); and tenidor Sahn-Dyck (Hort. Dyck. 376. 1834). 



Dr. John H. Bamhart recently called our attention to a number of cactus names 

 published by St. Hilaire which have been overlooked by later writers. One of these, 

 Cactus heierocladus St. Hilaire (yoy. Rio de Janeiro and JNIinas Geraes 2: 103. 1830) 

 seems to belong here, as the following free translation would indicate : 



"Another cactus, which I have already seen near Rio de 

 Janeiro, raised its branches in the midst of tortuous lianas; 

 its trunk, which grows more slender from the base to the 

 summit, is covered with fascicles of spines arranged in a 

 quincunx, and it shows various stages of verticillate, hori- 

 zontal, rounded branches, to the number of seven in each 

 whorl; these branches, like those of the spruce tree, grow 

 shorter toward the summit of the plant, and they bear sec- 

 ondar\' branches, flattened and oval-oblong, which may in a 

 certain sense be taken as leaves." 



Illustrations: Curtis's Bot. Mag. 61: pi. 3293; 

 Dept. Agr. N. S. W. Misc. Publ. 253: pi. [6]; Martins, 

 Fl. Bras. 4^: pi. 61; Pfeiffer and Otto, Abbild. Beschr. 

 Cact. i: pi. 29; vSchumann, Gesamtb. Kakteen f. 100; 

 Vellozo, Fl. Flum. 5: pi. 28, this last as Cactus arboreus. 



Plate XXX, figm-e 2, represents a flowering joint 

 taken from a specimen in the New York Botanical 



Fig. 26S. — Opuntia brasiliensis. 



Figs. 269, 270. — Opuntia bahiensis. X0.5. 



Garden; figure 3 is from the same plant, showing terete and flat joints. Figure 267 repre- 

 sents a fruit collected b}^ Dr. Rose near Iguaba Grande, Brazil, in 1915; figure 268 is 

 from a photograph taken by Paul G. Russell in a public park in Bahia, Brazil. 



237. Opuntia bahiensis sp. nov. 



Trunk 3 to 15 meters high, cylindric, 20 to 25 cm. in diameter, tapering gradually upward; 

 the center of trunk pithy, hollow in age, surrounded by an open woody c\dinder; lateral joints 

 terete, the terminal ones flat and thin, ovate to oblong; leaves small, 2 to 3 mm. long, turgid; 

 spines on terminal joints, if present, i or 2, slender, red at first, then brown; spines on old trunk 

 forming large clusters at all the areoles; flowers not seen; fruit deep red both within and without, 

 oblong, 3 to 4 cm. long; its small areoles with brown glochids; seeds i to 5, mostl}^ i or 2 in each 

 fruit, ver}' hairy, thick, S mm. broad. 



Collected in the Adcinity of Toca da Onca, Bahia, Brazil, by Rose and Russell, 

 June 27 to 29, 1915 (No. 20068). 



