240 THE CACTACEAE. 



Plate XXX, figure 3, shows a branch of a plant brought back from Costa Rica by Dr. 

 Max on 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, mosth^ 3, 8 to 10 

 cm. long, ID mm. broad or less, without aerial roots; flowers borne singly along the whole branch, 

 small ; sepals 2 ; petals 4, creamy white ; ovar\^ 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 tondnzii, but whether specifically 

 distinct will require further study to determine. 



42. Rhipsalis bohviana (Britton) Lauterbach in Buchtien, Contr. Fl. Bolivia i: 145. 1910. 



Hariota bolivmna Britton in Rusby, Mem. Torr. Club 3^: 40. 1893. 



Stems somewhat 4-angled and narrowty 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, i to 2 cm. broad, 

 broadlv crenate, the crenations 1.5 to 3 cm. long; flowers usually solitan,^ but sometimes 2 or 3 at an 

 areola, about 15 mm. long, one-half to two-thirds as broad, "j-ellow"; fruit globose, nearly i cm. in 

 diameter, truncate at apex. 



Type locality: Yimgas, Bolivia. 

 Distribution: Wet forests of Bolivia. 



43. Rhipsalis lorentziana Grisebach, Abh. Ges. Wiss. Gottingen 24: 139. 1S79. 



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, usuall_v 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 Cordoba, Argentina, in 1915, a part of the 

 plant collected by Lorentz and Hieronymus in 1893 (Xo. 454), which proves to be the type. 



44. Rhipsalis ramulosa (Salm-Dyck) Pfeiffer, Enum. Cact. 130. 1837. 



Cereus ramiilosus 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 soUtar\' 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 i, 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 lorentziana 

 but bearing scales on the ovary. 



* Lemaire, in 1 839 (Cact. Gen. Nov. Sp. 74, 75), combines Rhipsalis with Hariota, and 8 of the 10 species which he 

 lists had not heretofore been referred to Hariota. They are, therefore, to be credited to Lemaire rather than to Otto 

 Kuntze (Rev. Gen. PI. i: 262. 1891), as has been done in the Index Kewensis. 



