Hariota pachyptera (Pfeiffer) Kuntze 1891
Rhipsalis robusta Lemaire 1860, Hariota robusta (Lemaire) Kuntze 1891
Hariota triquetra Kuntze 1891
Plants epiphytic or lithophytic, semierect to somewhat pendent, freely branching, to 1 m (3.3 ft) long. Stem segments flattened, thick, broadly elliptic to circular, dark green, becoming reddish, with notched and scalloped margins, prominent veins, to 14 cm (5.5 in) long and 12 cm (4.7 in) wide. Areoles with sparse wool. Flowers borne laterally, one to three per areole, yellowish to whitish, to 15 mm (0.6 in) long, 20-25 mm (0.8-1 in) in diameter. Fruits globose to depressed globose, red. Distribution: low elevations in Paraná, Santa Catarina, Rio Grande do Sul, Rio de Janeiro, and Säo Paulo, Brazil.
Rhipsalisparadoxa (Salm-Dyck ex Pfeiffer) Salm-Dyck 1850 CHAIN CACTUS, LINK PLANT
Lepismium paradoxum Salm-Dyck ex Pfeiffer 1837, Hariota paradoxa (Salm-Dyck ex Pfeiffer) Kuntze 1891
Hariota alternata Lemaire 1841, illegitimate name; Rhipsalis alternata
(Lemaire) Lemaire 1868, illegitimate name Rhipsalis paradoxa subsp. septentrionolis N. P. Taylor & Barthlott 1995
Plants epiphytic, freely branching, pendent in large clusters to 5 m (16 ft) long, growth determinate, branching strictly acrotonic. Stem segments short, three- or four-angled, the angles discontinuous, produced in zigzag links in pairs or whorls of three to eight, pale green, to 5 cm (2 in) long. Areoles woolly but lacking bristles. Flowers borne singly near the stem tips, white, to 20 mm (0.8 in) long. Fruits spherical, white to tinged with pink. Distribution: southeastern Brazil.
Two subspecies of Rhipsalis paradoxa are recognized. Subspecies paradoxa tends to have much broader stem segments; it occurs in southwestern Rio de Janeiro, Sao Paulo, Paraná, and Santa Catarina. Subspecies septentrionalis has stem segments less than half as broad as those of subspecies paradoxa; it occurs in eastern Pernambuco, eastern Bahia, Minas Gerais, and Espirito Santo.
Rhipsalis pentaptera A. Dietrich 1836 Hariota pentaptera (A. Dietrich) Lemaire 1839
Plants bushy, epiphytic, more or less erect, much branched, growth determinate, branching acrotonically, singly or in groups of two or three, 35-40 cm (14-16 in) high. Stem segments stiff, bright green, three- to seven-winged or ribbed, with regularly notched margins, 7-12 cm (2.8-4.7 in) long, 6-15 mm (0.2-0.6 in) in diameter. Areoles in regular rows, with few or no bristles. Flowers borne in succession, singly or
Rhipsalis neves-armondii, photograph by Wilhelm Barthlott
in clusters of two to four, from the upper parts of segments, white, 7-8 mm (0.3 in) long. Fruits white to pinkish. Distribution: vicinity of Rio de Janeiro, Brazil, but probably extinct in the wild.
Rhipsalis pilocarpi! Loefgren 1903 Erythrorhipsalis pilocarpa (Loefgren) A. Berger 1920
Plants small, epiphytic, erect at first, later pendent bushes, growth determinate, terminating in composite areoles. Stem segments slender, cylindrical, perfectly round in cross section, succulent, producing whorls of branches apically, to 4 cm (1.6 in) long, 6 mm (0.2 in) in diameter. Areoles green,
Rhipsalis pentaptera, photograph by Wilhelm Barthlott sometimes tinged with purple, somewhat woolly, with 3-10 gray to white bristlelike spines. Flowers borne terminally singly or in pairs, white; pericarpels 2.5-4 cm (1-1.6 in) in diameter, with bristlelike spines. Fruits spherical, wine red, with bristlelike spines. Distribution: southern Minas Gerais, southern Espirito Santo, northwestern Rio de Janeiro, southern Sao Paulo, and eastern Paraná, Brazil. Rhipsalis pilocarpa is apparently very rare.
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