RHIPSALIS. 219 



Introduced into Jardin des Plantes, Paris, France, from Brazil. 



We have not seen this type material, but if plate 95 in the Bliihende Kakteen is typical, 

 our identification is correct. In the description accompanying this plate it is stated that 

 the drawing was made from a plant sent by Mr. Weber to the Berlin Botanical Garden. 



Hariota bambusoides Weber (Diet. Hort. Bois 1048. 1898) was given as a synonym 

 but was never described. 



Illustrations: Bliihende Kakteen 2: pi. 95, as Hariota salicornioides bambusoides; 

 Gartenwelt 13 : 1 17, as Rhipsalis salicornioides bambusoides. 



Figure 220 is reproduced from the first illustration cited above. 



3. Hatiora cylindrica sp. nov. 



Forming dense masses one meter in diameter or more; joints cylindric, 3 cm. long or less, 

 pale green, becoming spotted or finally red throughout; flowers usually solitary, 12 mm. long; 

 sepals ovate, short, red; petals orange to yellow, oblong, obtuse. 



Collected by J. N. Rose in company with Dr. Lofgren and Senor Porto at Ilha Grande, 

 Districto Federal, near Rio de Janeiro, July 22 to 24, 1915. 



Illustration: Arch. Jard. Bot. Rio de Janeiro 2: pi. 13, ad Rhipsalis bambusoides. 



Plate XXIII, figure i, shows the plant collected by Dr. Rose on Ilha Grande, near Rio 

 de Janeiro, which flowered in the New York Botanical Garden, December 18, 1918. 



8. RHIPSALIS Gaertner, Fruct. Sem. i 137. 1788. 



*Hariota Adanson, Fam. PI. 2: 243. 1763. 



]Cassytha Miller, Gard. Diet. ed. 8. 1768. Not Linnaeus, 1753. 



Cacti sometimes growing in humus, but usually epiphytic and hanging from trees, sometimes 

 erect, sometimes clambering over rocks, more or less rooting or, when hanging, irregularly producing 

 aerial roots; roots always fibrous; stems usually much branched (often heteromorphic), terete, 

 angled or much flattened and leaf-like, very slender and thread-like or stout and stiff ; leaves wanting 

 or represented by minute bracts ; areoles borne along margin of flat-branched forms, along ribs or 

 scattered irregularly in other forms, usually small, bearing hairs, wool, bristles, and flowers; flowers 

 usually solitary, but sometimes several from a single areole, opening night or day and remaining 

 open for i to 8 days, small for the family; perianth-segments distinct, few, sometimes only 5, 

 usually spreading, sometimes reflexed; filaments few or numerous, erect, slender, borne on outer 

 margin of disk in one or two rows; style erect; stigma-lobes 3 or more, usually slender, spreading; 

 ovary small, sometimes depressed or sunken in branch; fruit globular or oblong, sometimes angled 

 when immature, but finally turgid, juicy, white or colored, usually naked (setose at areoles in i or 

 2 species) or sometimes bearing a few scales; seeds small, few to many. 



Type species: Rhipsalis cassutha Gaertner. 



The generic name is from pti/' wicker-work, referring to the slender, pliable branches 

 of the typical species. 



We recognize 57 species, although more than 115 names have been published. 



The species range from Florida, Mexico, and the West Indies through continental 

 America to Argentina ; only 2 species are found in Mexico ; i in Florida ; 2 are known in the 

 West Indies; a very few in northern South America; 3 or 4 only on the west coast of 

 South America; and 5 or 6 in Argentina. The center of distribution is in the states of Rio 

 de Janeiro, Sao Paulo, and Minas Geraes, in southern Brazil. In the little state of Rio de 

 Janeiro and chiefly about the city of the same name. Dr. Rose collected 15 species in 19 15. 



The occurrence of species of Rhipsalis, in the wild state, in tropical Africa and in Ceylon, 

 forms the only possible exception to the American natural distribution of cacti. Eight 



*No species was cited by Adanson for his genus Hariota but it was based on Burmann's plate of Plumier (pi. 197, 

 f . 2), which has been identified as Cactus parasiticus Lamarck, not Linnaeus. The type of Cacttis parasiticus Linnaeus 

 is a species of Vanilla, probably V. claviculata Swartz. 



t Miller, in his Gardeners' Dictionary of 1768, described Rhipsalis cassutha under the name of Cassytha filiformis, 

 a name which had already been published by Linnaeus for a wholly different plant. Miller's generic name. Cassytha, 

 therefore, being a misidentification, should not be treated as a synonym proper of Rhipsalis, although usually so cited. 



