222 THE CACTACEAE. 
1. Rhipsalis mesembryanthemoides* Haworth, Rev. Pl. Succ. 71. 1821. 
Rhipsalis salicornioides * (variety B) Haworth, Suppl. PI. Succ. 83. 1819. 
Hariota mesembrianthemoidest Lemaire, Cact. Gen. Nov. Sp. 74. 1839. 
Branches very dissimilar; main branches elongated, slender, terete, more or less setose, often — 
bearing aérial roots, covered with short stubby branchlets; these sometimes also bearing short 
joints, usually less than 1 cm. long, more or less angled, often with short setae from the small 
areoles; flower-buds small, pinkish; flowers solitary at areoles of the branchlets, opening in early 
morning, rather large, 1.5 cm. broad, white or light pink; petals 5, spreading, acute; stamens about 
20, erect, white; style white; stigma-lobes 3, white; fruit short-oblong, 5 mm. long, white or tinged 
with red. 
Type locality: Not cited where published. 
Distribution: Rio de Janeiro, Brazil. 
The plant is common in cultivation; in nature it grows in dense masses on trunks of 
trees. It first flowered in cultivation in England in 1831. Its short joints have a fancied 
resemblance to species of Mesembryanthemum. 
A dried specimen of Haworth’s plant is still preserved in London and through the 
kindness of N. E. Brown we have a photograph of it. 
Rhipsalis echinata was published as a synonym by Pfeiffer (Enum. Cact. 136. 1837). 
Illustrations: Cact. Journ. 1: 180; Curtis’s Bot. Mag. 58: pl. 3078; Schumann, Gesamtb. 
Kakteen 633. f. 98, G; Monatsschr. Kakteenk. 2: 9; 4:59; Arch. Jard. Bot. Rio de Janeiro 
1: pl. 11; Goebel, Pflanz. Schild. 1: pl. 4, f. 7; Loddiges, Bot. Cab. 20: pl. 1920: Thomas, 
Zimmerkultur Kakteen 58. 
Plate xxiv, figure 9, shows a fruiting plant obtained by Dr. Rose in Rio de Janeiro 
in 1915 (No. 20246); figure 10 shows a flowering plant sent by Alwin Berger in 1908. 
2. Rhipsalis cereuscula Haworth, Phil. Mag. 7: 112. 1830. 
Hariota saglionis Lemaire, Cact. Aliq. 39. 1838. 
Rhipsalis saglionis Otto in Walpers, Repert. Bot. 2: 936. 1843. 
» Rhipsalis brachiata Hooker in Curtis’s Bot. Mag. 69: pl. 4039. 1843. 
Hartota cereuscula Kuntze, Rev. Gen. Pl. 1: 262. 1891. 
Rhipsalis saglionis rubrodiscus Léfgren, Arch. Jard. Bot. Rio de Janeiro 1: 80. 1915. 
Stems and branches terete; stem slender, usually elongate, often erect, sometimes 6 dm. high, 
crowned by a cluster of short branches; upper branches short, 2 to 6 times as long as thick, some- 
what angled, the areoles bearing 2 to 4 short bristles; flowers terminal or near the ends of the 
branches, 16 mm. broad; petals about 12, spreading, pinkish to white with yellowish midrib; stigma- 
lobes 3 or 4; berries white. 
Type locality: Brazil. 
Distribution: Uruguay to central Brazil. 
Illustrations: Curtis’s Bot. Mag. 69; pl. 4039; Loudon, Encycl. Pl. ed. 3. 1380. f. 
19408, as Rhipsalis brachiata; Cycl. Amer. Hort. Bailey 4: f. 2101; Stand. Cycl. Hort. 
Bailey 5: f. 3377; Cact. Journ. 1: 180; Monatsschr. Kakteenk. 4:75, as R. saglionss. 
Plate xxvil, figure 3, is of a plant which flowered in the New York Botanical Garden in 
March 1912. Figure 221 is from a photograph of a flowering plant from Misiones, obtained 
by Dr. Rose in 1915 from Dr. Spegazzini. 
3. Rhipsalis prismatica Riimpler in Forster, Handb. Cact. ed. 2. 884. 1885. 
Hariota prismatica Lemaire, Illustr. Hort. 10: Misc. 8 186 
Rhipsalis suarezianat Weber, Rev. Hort. 64: 425. 1892. % 
Rhipsalis tetragona Weber, Rev. Hort. 64: 428. 1892. 
Very much branched, prostrate; lower branches elongated and terete; upper branches short 
and somewhat angled ; areoles more or less setose; flowers white ; petals usually 5, obtuse; fruit 
small, pinkish to white, globose. 
* paworth spelled this R. mesembryanthoides and also R. salicornotdes. 
ace ieee Kewensis gives the place of publication erroneously as Lemaire, Cact. Alig. Nov. 39. 1838. 
ccording to the Index Kewensis, Rhipsalis suarensis Weber (Dict. Hort. Bois 1046. 1898) is the same. 
