240 THE CACTACEAE. 
Plate xxx, figure 3, shows a branch of a plant brought back from Costa Rica by Dr. 
Maxon in 1906. 
Of this relationship is the following: 
RHIPSALIS WERCKLEI Berger, Monatsschr. Kakteenk. 16: 64. 1906. 
Epiphytic, much branched, hanging, 3 to 6 dm. long; branches 2 to 4-angled, mostly 3, 8 to 10 
em. long, ro mm. broad or less, without aérial roots; flowers borne singly along the whole branch, 
small; sepals 2; petals 4, creamy white; ovary not sunken in the branch; fruit globose, naked or with 
an occasional small scale, white, 5 mm. long; seeds numerous, brownish. 
Type locality: Navarro, Costa Rica. 
Distribution: Costa Rica. 
The above description with regard to flowers and fruit has been copied. Our living 
specimens suggest that it may be different from Rhipsalis tonduzii, but whether specifically 
' distinct will require further study to determine. 
42. Rhipsalis boliviana (Britton) Lauterbach in Buchtien, Contr. Fl. Bolivia 1: 145. 1910. 
Hariota boliviana Britton in Rusby, Mem. Torr. Club 3: 40. 1893. 
Stems somewhat 4-angled and narrowly winged at base, setose at the areoles, the setae 5 to 10, 
yellowish white, about 2 mm. long; branches 1.5 to 30 cm. long, flattened and thin, 1 to 2 cm. broad, 
broadly crenate, the crenations 1.5 to 3 cm. long; flowers usually solitary but sometimes 2 or 3 at an 
areole, about 15 mm. long, one-half to two-thirds as broad, “‘yellow”’; fruit globose, nearly 1 cm. in 
diameter, truncate at apex. 
Type locality: Yungas, Bolivia. 
Distribution: Wet forests of Bolivia. 
43. Rhipsalis lorentziana Grisebach, Abh. Ges. Wiss. Gottingen 24: 139. 1879. 
Epiphytic on forest trees or clambering over rocks, freely rooting along stems; lower part of 
stem often terete; branches thin, flattened or sometimes 3-angled, usually elongated and narrow, 
sometimes more or less constricted near middle, 3 cm. broad or less, coarsely serrate, usually cuneate 
at base; flowers white, about 4 cm. long; ovary oblong, strongly angled, naked except a few scales 
at the top; fruit globose, purplish, 3 mm. in diameter. 
Type locality: Oran, Argentina. 
Distribution: Northwestern Argentina and to be expected in southern Bolivia. 
Dr. Kurtz gave to Dr. Rose when he was in Cérdoba, Argentina, in 1915, a part of the 
plant collected by Lorentz and Hieronymus in 1893 (No. 454), which proves to be the type. 
44. Rhipsalis ramulosa (Salm-Dyck) Pfeiffer, Enum. Cact. 1 30. 1837. 
Cereus ramulosus Salm-Dyck, Hort. Dyck. 340. 1834. 
Hariota ramulosa Lemaire, Cact. Gen. Nov. Sp. 75. 1839.* 
Stems woody, 3 dm. or more high, erect, terete; branches 7 to 12 cm. long, 1.2 to 2.5 cm. broad, 
pale green, with distant low crenations 12 to 20 mm. apart, when young often ciliate at areoles but 
in age naked; flowers solitary at the areoles, small, rotate, greenish white; sepals and petals 6 or 7, 
ovate-lanceolate, adhering to the base of the ovary, persistent; stamens 12 to 18; style filiform; 
stigma lobes inconspicuous; fruit glabrous, 5 to 6 mm. in diameter, white and subpellucid with 2 to 3 
minute scales; seeds small, black. 
Type locality: Not cited. 
Distribution: Western Brazil and the adjacent borders of Bolivia and Peru (according 
to Vaupel). . 
Collected by R. S. Williams at Isapuri, Bolivia, altitude 1,550 feet, October 1, 1901 
(No. 734). We have also referred here H. H. Rusby’s No. 749 from trunk of trees near the 
cataracts of Bopi River, Bolivia, altitude 2, 500 feet, September 8, 1921. 
We know this plant from herbarium specimens; it is similar to Rhipsalis lorentztana 
but bearing scales on the ovary. 
* Lemaire, in 1839 (Cact. Gen. Nov. S i j 
lists had not heretofore been referred to Hariots 75}, combines Rhi 
Kuntze (Rev. Gen. Pl. 1: 262. 
psalts with Hariota, and 8 of the 10 species which he 
. They are, therefore to be credit i te 
re, ; -dited to Lemaire rather than to Otto 
1891), as has been done in the Index Kewensis. 
