232 THE CACTACEAE. 
21. Rhipsalis megalantha Léfgren, Monatsschr. Kakteenk. 9: 134. 1899. 
Rhipsalis novaesii Giirke, Monatsschr. Kakteenk. 19: 12. 1909. 
Plants stout, up to 1 cm. thick, at first erect but in time spreading or with pendent branches, dull 
green, often spotted with purple; areoles rather prominent, especially after flowering ; flowers large, 4 
cm. broad; petals 8 to 12, oblong, often shortly acuminate or obtuse, white; filaments erect, orange 
at base, rose-colored above; style thick, longer than the stamens; stigma-lobes 6 to 8; fruit surrounded 
with white hairs, rather small, 6 mm. in diameter, white or tinged with red; seeds nearly black. 
Type locality: Island of Sao Sebastido, Brazil. 
Distribution: Known only from the type locality, an island off the coast of Brazil, 
belonging to the state of Sdo Paulo. \ 
This plant is known wild only from the collection of Dr. Lofgren, but is now widely 
found in cultivation, sometimes under the names Rhipsalis grandiflora or R. nevaest1. It has 
the largest flower of any species of Rhipsalis. 
Illustrations: Bliihende Kakteen 2: pl. 116; Monatsschr. Kakteenk. 19: 13, as Rhip- 
salis novaesi1; Monatsschr. Kakteenk. 9: 137; Schumann, Gesamtb. Kakteen Nachtr. 147. 
f. 35; Arch. Jard. Bot. Rio de Janeiro 1: pl. 8. 
Plate xxIVv, figure 3, shows a fruiting branch obtained by Dr. Rose in Rio de Janeiro, 
Brazil, in 1915 (No. 20400). 
22. Rhipsalis leucorhaphis Schumann, Monatsschr. Kakteenk. 10: 12 5. Igoo. 
Epiphytic, much branched, about 5 dm. long, rooting abundantly along the branches, jointed, 
5 to 8 mm. in diameter, terete or showing 4 or 5 ribs in herbarium specimens; bristles 1 to 5, appressed, 
early deciduous; areoles subtended by an ovate papery bract; flowers white, nodding, large, 1.5 cm. 
long; petals only slightly spreading; filaments purplish or white with orange-colored base; stigma- 
lobes 3 or 4, greenish, spreading; ovary not sunken in the branch; fruit globose, bright red, 6 to 8 mm. 
in diameter; seeds numerous, brown. ; , 
Type locality: Estancia Tagatiya, Paraguay. 
Distribution: Paraguay and northern Argentina. 
We did not know this species until it was brought back by Dr. Shafer in 1917 from Para- 
guay, where he obtained good specimens; he also found it abundant in northern Argentina. | 
Like many of the other species it grows in various situations, sometimes sprawling over 
rocks or growing on forest trees. One of his living plants fruited in the New York Botanical 
Garden and from this we have drawn part of our description. 
Plate xxIv, figure 1, shows the plant in flower, and figure 2 shows it in fruit, collected 
by Dr. Shafer at Trinidad, Paraguay (No. 143). . 
23. Rhipsalis loefgrenii nom. nov. 
Rhipsalis novaesii Lofgren, Arch. Jard. Bot. Rio de Janeiro 1: 69. 1915. Not Giirke, 1909. 
_ Stems long and slender, rooting freely all along stem, pale green to purple, terete, 3 mm. in 
diameter; areoles small, subtended by a large scarious bract with appressed hairs in axils when young, 
flowers very numerous, 12 to 15 mm. long, white, campanulate; filaments purplish at base; fruit 
purplish, 5 to 8 mm. in diameter. 
Type locality: Near Campinas, Brazil. 
Distribution: Brazil. 
_ Dr. Rose saw the Léfgren type in the Botanical Garden at Rio de Janeiro and obtained 
living and herbarium specimens of the plant. Dr. Shafer also obtained living specimens 
from Léfgren in 1917. 
Unfortunately, Lofgren’s name was given to another plant by Giirke and for this 
reason we have renamed it in honor of Dr. Alberto Lofgren (1854-1918), who long studied 
this genus and published an excellent monograph of it in 1915. 
Illustration: Arch. Jard. Bot. Rio de Janeiro 1: pl. 2, as Rhipsalis novaesii. 
