86 



THE CACTACEAE. 



1. Lemaireocereus hollianus (Weber) Britton and Rose, Contr. U. S. Nat. Herb. 12: 425. 1909. 



Cereus hollianus Weber in Coulter, Contr. U. S. Nat. Herb. 3: 411. 1896. 

 Cereus bavosus Weber in Schumann, Gesamtb. Kakteen 84. 1897. 



Stem simple or branching only at base, 4 to 5 meters high; ribs 8 to 12, acute; areoles 1 to 3 

 cm. apart; spines at first bright red, but soon gray; radial spines about 12, very unequal, 1 to 3 cm. 

 long, mostly spreading; centrals 3 to 5, swollen at base, unequal, the lower ones much longer than 

 the others, sometimes 10 cm. long, strongly deflexed; flowers borne at the upper areoles, 10 cm. long, 

 white; scales on ovary and flower -tube with lanate and bristly axils; fruit "as large as a goose egg," 

 dark purple to red, covered with clusters of spines and bristles ; seeds black, shining. 



Type locality: Tehuacan, Puebla, Mexico. 



Distribution: Puebla, Mexico. 



This is a remarkable species, with 

 unusually large fruit. It is called by the 

 Mexicans bavoso. 



The two names C. hollianus and C. 

 bavosus are based on Weber's collection of 

 1 864-66, and hence the latter is a synonym. 



About the town of Sebastian in 

 southern Puebla it is used as a hedge 

 plant as well shown in our illustration. 



Cereus brachiatus Galeotti (Salm- 

 Dyck, Cact. Hort. Dyck. 1849. 195. 1850) 

 must be very close to L. hollianus, if not 

 identical, although Schumann did not 

 believe they were the same; both came 

 from near Tehuacan, Mexico. Cereus mi- 

 litaris californicus (Schumann, Gesamtb. 

 Kakteen 85. 1897) is said to be a horti- 

 cultural form of Cereus bavosus. 



Illustrations: Contr. U. S.Nat. Herb. 

 10: pi. 19, as Cereus hollianus; Mollers 

 Deutsche Gart. Zeit. 29: 438. f. 14, as 

 Cereus bavosus. 



Figure 125 is from a photograph by Dr. Rose at Sebastian, Puebla, Mexico, in 1905 



2. Lemaireocereus hystrix (Haworth) Britton and Rose, Contr. U. S. Nat. Herb. 12: 425. 1909. 



Cactus hystrix Haworth, Suppl. PI. Succ. 73. 1819. 

 Cereus hystrix Salm-Dyek, Observ. Bot. 3: 7. 1822. 

 Echinocactus hystrix Haworth, Phil. Mag. 7: 116. 1830. ' 



Plant often 8 to 12 meters high and then with 10 to 50 erect branches; trunk short, often in- 

 definite, sometimes 3 dm. in diameter; branches 7 to 10 cm. in diameter, with 9 or 10, rarely 12, ribs 

 separated by V-shaped intervals; spines gray with brown tips, acicular, the radials about 10; central 

 spines usually 3, one often longer than the others, often 4 cm. long; flower, including the ovary, 

 S to 9 cm. long; tube 5 cm. long, broadly obconic, 3 cm. broad at mouth, spineless, purplish to 

 dark green, bearing few short broad scales; inner perianth-segments white, spreading or recurved; 

 stamens numerous, erect, white; style white, slender, club-shaped; ovary tuberculate, spineless, 

 bearing small ovate scales; fruit 5 to 6 cm. long, longer than broad, scarlet, covered with clusters 

 of deciduous spines, when mature breaking open and exposing the dark red pulp. 



Type locality: West Indies. 



Distribution: Dry parts of Cuba, Jamaica, Hispaniola, and the Porto Rican islands 

 Desecheo and Cayo Muertos. 



On the outskirts of Kingston, Jamaica, the stout branches are planted close together, 

 forming a fence or an almost impenetrable hedge about fields, especially along the roadsides 



-Lemaireocereus hollianus. 



