RHIPSALIS. 223 



Type locality: Not cited, but Forster and Weber state that it came from Brazil. 



Distribution: Brazil and northern Madagascar, but range not known. 



Weber thought that Rhipsalis tetragona was the same as R. prismatica Riimpler, but 

 because he was not certain he described it as new. 



Illustration: Gartenwelt 16: 634, as Rhipsalis suareziana; Monatsschf. Kakteenk. 18: 

 74, as R. tetragona. 



Plate XXXII, figure 3, shows a plant from Berlin which flowered in the New York 

 Botanical Garden on November 23, 1915. 



Fig. 221. — Rhipsalis ccreuscula. 



4. Rhipsalis simmleri Beauverd, Bull. Herb. Boiss. II. 7: 136. 1907. 



Stems pendent, cylindric, 2 to 3 mm. in diameter, very much branched, the branches dichoto- 

 mous or 3 or 4-verticillate, upper short and somewhat angled, quite unlike lower ones; flowers 

 solitary, subterminal; petals white with pink tips, oblong, 6 to 8 mm. long; filaments 5 to 8 mm. 

 long, white, filiform; style exserted, 9 mm. long; stigma-lobes ovate, reflexed, white; ovary obconic, 

 3 to 3.5 mm. in diameter; fruit white. 



Type locality: Costa Rica. 



Distribution: Costa Rica. 



This species is named for Paul Simmler, chief gardener of the Boissier Collections at 

 Geneva, Switzerland. The plant was introduced in a collection of orchids from Costa Rica 

 and flowered in cultivation. Dr. Rose saw it when in Geneva in 19 12 and obtained a small 

 fragment, but he did not see it in flower. 



Illustration: Bull, Herb. Boiss. II. 7: 137. 



5. Rhipsalis clavata Weber, Rev. Hort. 64: 429. 1892. 



Rhipsalis clavata deUcalula Lofgren, Arch. Jard. Bot. Rio de Janeiro 2: 45. 1918. 



Erect when young but soon hanging, often a meter long or more, much branched; joints all 

 similar, narrowly clavate, sometimes 4-angled when young, short, i to 3 cm. long, deep green. 



