LEPTOCEREUS. 



Si 



7. Leptocereus sylvestris sp. nov. 



Tree-like, up to 5 meters high; joints 2 to 3 cm. in diameter, 5 to 7 -ribbed; ribs strongly crenate; 

 areoles i to 1.5 cm. apart; spines light brown, long and acicular, the longest ones 9 cm. long; fruit 

 subglobose, 7 to 8 cm. long, bearing clusters of short spines, these early deciduous. 



Collected by Britton, Cowell, and Shafer in coastal woods, Ensenada de Mora, Province 

 of Oriente, Cuba, March 20 to 29, 1912, No. 13060. 



Figure 117 shows a fruit of the type specimen and figure nS a branch. 



FIG. ii 8. Top of branch of 

 Leptocereus sylvestris. Xo.6. 







FIG. ny. Leptocereus quai 



8. Leptocereus quadricostatus (Bello) Britton and Rose, Contr. U. S. Nat. Herb. 16: 242. 

 Cereus quadricostatus Bello, Anal. Soc. Esp. Hist. Nat. 10: 276. iSSi. 



Plants erect or arching, up to 4 meters high, with numerous 

 lateral, usually elongated branches, often forming thickets; branches 

 dull, dark green, usually 4-ribbed, sometimes 3-ribbed, the ribs thin 

 and low; spines acicular, i to 4 cm. long; flowers 4 cm. long, 2 cm. 

 wide at the mouth ; outer perianth-segments green ; inner perianth- 

 segments greenish white or yellowish white, truncate, the apex 

 lacerate or erose; ovary and flower-tube bearing a few clusters of 

 short spines; style and filaments greenish ; fruit subglobose to obovoid, 

 3 to 5 cm. long, not very spiny, red. 



1913- 



Type locality: Porto Rico. 



Distribution: Southwestern Porto Rico. 



This plant inhabits hillsides and plains in the dry south- 

 western part of Porto Rico, sometimes forming dense thickets, 

 penetrable only by the use of the machete; it is known as sebucan. 



FIGS. 1 20 and 121. Fruit and 

 flower of L. quadricostatus. 

 Xo. 7 . 



