CACTUS. 225 
Short-cylindric, 5 to 10 dm. high; cephalium up to 10 cm. broad, 3 to 5 cm. high, rounded, com- 
posed of white wool and long brown bristles or spines, much longer than the wool; ribs 10 or 11, up 
to 3 dm. in diameter, prominent, 2 to 3 cm. high; spines about ro to 12, stout, 3 to 5 cm. long, terete, 
yellowish to brown; flowers 3 to 4 cm. long; the tube narrowly cylindric, the lobes oblong, obtuse or 
mucronulate; fruit clavate, much elongated, 5 to 6 cm. long; seeds numerous, black, shining. 
Type locality: Jamaica. 
Distribution: Arid southern parts of Jamaica. 
Dr. Britton studied this plant in the Healthshire Hills, south of Spanish Town, 
Jamaica, in company with Mr. William Harris in 1908. Here it is abundant on limestone 
with other cacti and xerophytic shrubs and trees and travelers use it for drinking water by 
cutting off the top and scraping out the watery pulp. 
Mammillaria communis (Steudel, Nom. ed. 2. 1: 245. 1840) appeared as a synonym of 
Cactus communis. 
Melocactus brongniartu Lemaire (Cact. Aliq. Nov. 12. 1838), of unknown origin, has 
never been definitely identified. Lemaire states that it is related to Melocactus communis. 
EN \ 
Fic. 235.—Cactus lemairei. Fic. 236.—Cactus broadwayi. 
Illustrations: Gerarde, Herball ed. 1. 1013; ed. 2 and 3. 1177, as Melocarduus echinatus; 
L. Obel. Kruydboeck 2: 27. (24?) 1581, as Echtnomelocactus; Abh. Bayer. Akad. Wiss. 
Miinchen 2: pl. 2,f. 10(?), as Echinocactus leucacanthus; Mus. Bot. Leide 3: pl. 14;pl. 18, A, as 
M. communiformis; Mus. Bot. Leide 3: pl. 8; pl. 10, E, as M. pusillus; Nov. Act. Nat. Cur. 
19': pl. 16, f. 9: Abh. Bayer. Akad. Wiss. Miinchen 2 : pl. 1, II. f. 3, as M.rubens; Nov.Comm. 
Acad. Scient. 3: pl. 26, as M. rufispinus; Thomas, Zimmerkultur Kakteen 43, as M. brong- 
nartit; Clusues, Exot. pl. 92; Verh. Ver. Beford. Gartenb. 3: pl. 15, as M. meonacanthus, 
(?) Mem. Accad. Sci. Torino 33: pl. 7, as Cactus lamarckit; Verh. Ver. Beford. Gartenb. 3: 
pl. 11; Forster, Handb. Cact. ed. 2. 433. f. 48; Mém. Mus. Hist. Nat. Paris 17: pl.6; W atson, 
Cact. Cult. rgo. f. 54; ed. 3. f. 33; Balt. Cact. Journ. I: pl. 30; Cycl. Amer. Hort. Bailey 
2:f. 1389; Méllers Deutsche Gart. Zeit. 25: 477. f. 11, No. I, 10; Schelle, Handb. Raktecn , 
206. f. 138; Verh. Kon. Akad. Wetensch. IT. 5°: pl. 2, f. 3; The Garden 64: 337; Ann, nst. 
Roy. Hort. Fromont 2: pl. 1, f. C; Garten-Zeitung 4: 182. f. 42, No. 15; Gartenwelt 7: 277; 
