224 



THE CACTACEAE. 



Collected on island of Grenada, British West Indies, by N. L. Britton and T. E. Hazen 



Feb 



from 



observ 



St. George's and a conspicuous element of the vegetation; it was also studied on hi] 

 where in the southern nart of the island, but only the tvne olant was seen in bloom 



The 



smaller 



pandus Miller of Curasao, differing in its shorter 



somewhat 



negroes 



Johnston of Margarita, from which 

 , and grooved ribs. The fruit was 

 ildo, a common West Indian name 



for the tall-branching, cereus-like cacti. 



Figure 303 shows the type plant; 

 by T. E. Hazen. 



Cereus. (Sec page 21, aiilc.) 



Ccphaloccrcus calijornicus Hortus is credited by the Index Kewensis to Schumann 

 (Engler and Prantl, Pflanzenfam. 36a: 182. 1894), although it is not quite certain whether 

 Schumann intended to list this name under Cephalocereus or as Cereus calif ornicus . The 

 Cereus calijornicus Nuttall we have already referred to Opuntia serpentina (see i : 58, ante). 



Cereus chlorocarpus De Candolle (Prodr. 3: 466. 1828; Cactus chlorocarpus Humboldt, 



Ecuadore 



Hort 



which originally came from the Peru- 

 ed. It is evidently not a true Cereus. 



been introduced into suburbs of Calcutta in 1840. Otherwise it is unknown. This 

 name may apply to Cereus hexagonus (L.) Miller. 



flavispiniis hexagonus Salm-Dyck (Hort 



name 



Walpers's (Repert. Bot. 2: 340. 1843) brief descript 



from 



variable 



Hort. Brit. ed. 3. 284. i8.^q) was described sim 



Cereus iciidurus (Hort. Univ. i: 224. 1839), call 

 as soon to be figured and described, we do not know. 



martin 



i 



ziczkaanus (Montasschr. Kakteenk 



m 



referred 



a question. 



come from 



same 



sometimes 



pfeiferi, sometimes credited to Otto, occurs frequently in German 



descript 



Schumann's Monograph 



name is not found in the Index Kewensis 



specimen 



ocereus treleasei. 



pfeiferi, Mexico" which he noted at the time 



"^ J. 



Monvillea cavendishii. (See page 21, ante.) 



Related to this species is the following which we know only from description : 

 Cereus CHACOANUS Vaupel, Monatsschr. Kakteenk, 26: 121. 1916. 



Erect. 2 to 4 meters high, 6 cm. in diameter; rib, 8; spinas 9 or 10; central spine solitary, 

 6 cm. long; nowcrs funnelform. 15 cm. long; outer perianth-segmsnts rose-colored; inner perianth- 

 segments white; fruit subglobose to ovoid, 3 cm. long. 



Type locality: Gran Chaco, Paraguay. 

 Distribution: Paraguay. 



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