

72 MISSOURI BOTANICAL GARDEN 



P 



not enoiurh 



known, and I cannot give exact names either of this plant 

 or of the other which produced the smaller fruit shown in 

 plate 7. 



Mr. Weingart, of Nauendorf, has undertaken the task of 

 studying the different species of Cereus, and, according to 

 him, many of the species of older botanists, which were 

 reduced to synonyms, will prove to be true species. 



XI. IIYLOCEREUS A. Ber*. 



*^> 



Flowers funnel-shaped, very large and showy, white or red; ovary 

 and tube with more or less large, often foliaceous scales, without wool, 

 hairs or spines; sepaloid and petaloid perianth leaves numerous; 

 stamens numerous, in two groups; style with numerous stigmata. 

 Fruit roundish, covered with large, often foliaceous scales; pulp white 

 or red; seeds large. 



Cereus (Ilylocercus) extensus Salm. 1. c. 1G1. —Trinidad. 



C. (Hylowreus) Lemairei Hook, 1. c. 1G0. — Antigua Island. 



C. (Ilylocereus) Napoleonis Grah. 1. c. 159. — Antilles. 



C. (IDjlocercus) Ocamponis Salm. 1. c. 159. — Mexico. 



C. (IlylocercHs) stenopterus Web. L c. Nachtr. 57. —Costa Rica. 



C. (Hiilocercns) triangularis Haw. 1. c. 157. — Mexico. 



0. (Ilylocereus) trig onus Haw. 1. c. 158. — Puerto Rico. 



C. (Hylocereus) trigomis var. costaricensis Web. 1. c. Nachtr. 56. 



Costa Rica. 



A very natural subgenus comprising the Triangulares of 

 Schumann with the exception of Cereus setaceus Salm. 

 They are all climbers and produce roots along their trian- 

 gular stems. The nocturnal flowers are among the largest 

 and the most beautiful of the whole genus. The fruit is 

 large, red, and furnished with foliaceous scales, which in- 

 crease in size during the growth of the fruit 



Cereus triangularis Haw. is much grown on the Riviera 

 and flowers every year, but as yet I have not seen any 

 fruit from these plants. 



Cereus trigomis var. costaricensis Web. is much grown 

 for its fruit in Costa Rica. There is a tine drawing of it 

 at La Mortola. 



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