236 THE CACTACEAE. 



Dr. Lofgren gave Dr. Rose a cutting of the original plant of Rhipsalis chrysantha. 



Illustrations: Arch. Jard. Bot. Rio de Janeiro i : pi. 20, as Rhipsalis chrysocarpa; Rev. 

 Hort. 79: 106. f. 33, as R. foveolata; Gartenflora 42: 235. f. 49; Arch. Jard. Bot. Rio de 

 Janeiro i: pi. 21. 



Plate XXIX, figure 3, shows a plant also brought by Dr. Rose from Brazil (No. 20662) 

 which flowered and fruited in the New York Botanical Garden, March 7, 192 1. 



31. Rhipsalis dissimilis (G. A. Lindberg) Schumann in Martius, Fl. Bras. 4-: 286. 1890. 



Lepismium dissimile G. A. Lindberg, Gartenflora 39: 148. 1890. 



Rhipsalis dissimilis setulosa Weber, Rev. Hort. 64: 428. 1892. 



Rhipsalis pacheco-leonii Lofgren, Arch. Jard. Bot. Rio de Janeiro 2: 38. 1918. 



In clumps on large limbs of trees and freely rooting ; branches very diverse, some with numerous 

 bristly hairs from the areoles, others naked, erect, prostrate or even hanging ; hairy branches with 9 

 very low ribs, the areoles close together, each with about 15 long white bristles; glabrous branches, 

 5-angled, with the areoles alternating as in Rhipsalis paradoxa; flower-buds red; flowers solitary, 

 about 6 mm. broad; petals few, oblong, obtuse, widely spreading, sometimes turned back, pinkish; 

 stamens erect, numerous, white; ovary sunken in the branch; style pinkish, erect; stigma-lobes 3 or 

 4, white. 



Type locality: Sao Paulo, Brazil. 



Distribution: States of Sao Paulo and Rio de Janeiro, Brazil. 



We have referred Rhipsalis pacheco-leonii here after studying living specimens of 

 R. dissimilis and specimens from the type collection obtained by Dr. Rose in 19 15 (No. 

 20707). 



Rhipsalis setulosa Weber (Hort. Bois Paris) was published as a synonym of R. dissimilis 

 var. setulosa. 



Illustrations: Gartenflora 39: 148. f. 36, 37, as Lepismium dissimile; Arch. Jard. Bot. 

 Rio de Janeiro 2: pi. 10, as Rhipsalis pacheco-leonii; Curtis's Bot. Mag. 131: pi. 8013, as 

 R. dissimilis setidosa; Bliihende Kakteen 2: pi. 80, B; Gartenflora 40: f. 121. 



Plate XXIX, figures 5 and 6, shows the two diverse forms which this plant takes, as does 

 also plate xxxii, figures 6 and 7. The specimens were collected by Dr. Rose in the state of 

 Rio de Janeiro in 19 15 and are a part of the type material of R. pacheco-leonii. 



32. RhipsaUs pentaptera Pfeiffer in Dietrich, AUg. Gartenz. 4: 105. 1836. 



Ilariota pentaptera Lemaire, Cact. Gen. Nov. Sp. 75. 1839. 



Branches stifi', bright green, 6 to 15 mm. in diameter, strongly 5 or 6-ribbed, the ribs indented at 

 areoles; areoles often 2 cm. apart, small, subtended by broad bracts, usually bearing 2 white bristles; 

 flowers usually scattered along whole length of branches, opening in daytime, i to 4 from an areole; 

 scales 4 or 5 at base of corolla, broad and obtuse; petals 5, reddish on back, cream-colored on face, 

 4 mm. long, obtuse; stamens numerous, about 25, free from petals, white, about as long as style; 

 style and stigma-lobes white; ovary truncate, naked; fruit 3 to 4 mm. in diameter, white, naked, or 

 with an occasional small scale. 



Type locality: Not cited. Otto says, in a note, probably Brazil. 



Distribution: Southern Brazil and Uruguay. 



A very common species in cultivation, flowering freely in March and April. 



Hariota pentaptera Lemaire and Rhipsalis pentagona are given as synonyms of this 

 species by Forster (Handb. Cact. 453. 1846). 



Illustrations: Pfeiffer and Otto, Abbild. Beschr. Cact. i : pi. 17, f. i; Goebel, Pflanz. 

 Schild. i: pi. 4, f. 4; Gartenwelt 13: 117; Mollers Deutsche Gart. Zeit. 25: 477. f. 11, No. 

 21; Rev. Hort. 85: f. 152, in part. 



Plate xxx, figures 5 and 6, shows a plant which flowered and fruited in the New 

 York Botanical Garden in 1912 and 1915, obtained from Paris, France, in 1902. 



33. Rhipsalis sulcata Weber, Diet. Hort. Bois 1046. 1898. 



Stems woody, sometimes 10 to 15 mm. in diameter, often long and pendent; branches elongated, 

 the joints 2 to 3 dm. long, 5-angled, light green; areoles remote (2.5 to 5 cm. apart), usually near the 



