APPEINDIX. 



219 



102 a. Opuntia pennellii sp. nov. (See page 115, ante.) 



Plant low; joints i to 1.5 cm. long, obovate, turgid, bright green; spines i or 2 at each areole, 

 nearly porrect, subulate, 3.5 cm. long or less, white with dark tips; glochids not very conspicuous, 

 yellowish. 



Collected near Magangue, coastal plain of Colombia, Department of Bolivar, at 

 about 100 meters altitude, by Francis W. Pennell in 1918. 



Figure 286 shows a joint of the type plant. 



Here may belong herbarium specimens which we have seen from northern Colombia 

 but with the material at hand it is impossible to determine them definitely. One of these 

 was collected by Wilham R. Maxon, April 10, 1906 (No. 3849) at Puerto Colombia. This 

 plant is described as consisting of 3 to 6 joints, branching at the third or fourth joint, the 

 joints all being in one place. The flowers are yellow and small, only about 4 cm. long, 

 including the ovary. Another was collected by H. H. Smith near Bonda in 1 898-1 899 

 (No. 2728); this has joints very similar to those of Dr. Pennell's plant. It is said to be 

 from 2 to 4 feet high. 



- Opuntia guatemalensis. 

 X0.33. 



286. — Opuntia pennellii. 

 X0.5. 



Fig. 287.- 



-Opuntia caracasana. 

 X0.5. 



103 a. Opuntia caracasana Salm-Dyck, Cact. Hort. Dyck. 1849. 238. 1850. (See page 116, ante.) 



Stems low, bushy, 4 to 12 dm. high; joints oblong, 10 to 12.5 cm. long, turgid, pale green, 

 "leaves squamiform, minute"; spines 2 to 4, unequal, 2.5 to 4 cm. long or less, pale yellow; flowers 

 and fruit unknown. 



Type locality: Near Caracas, Venezuela. 



Distribution: Mountains about Caracas, Venezuela. 



The type specimens were collected near Caracas by E- Otto, prior to 1849. Dr. Rose 

 found the plant abundant above Caracas in 191 6. It usually grows on exposed hillsides 

 near the top of the divide which separates Caracas from the coast, and it was especially 

 common along the railroad just below the little station of Zig Zag. Several other cacti 

 are to be found in this neighborhood, among which are 0. elatior and 0. depauperata. 



Figure 287 shows a joint of the plant collected by Dr. Rose above Caracas in 1916. 



104 a. Opuntia aequatorialis sp. nov. (See page 116, ante.) 



Bushy, much branched; i to 1.5 meters high; the branches spreading or recurved; joints nar- 

 rowly oblong to obovate, 1.5 to 2 dm. long, 3 to 8 cm. broad, easily becoming detached; spines pale 

 yellow, at first only 2 to 4 but more in age, subulate, 2.5 to 6 cm. long; flower-buds ovoid, acute, red; 

 petals few, 8 to 10, orange-red, spatulate; filaments and style red; stigma-lobes cream- colored. 



