Now treated as a synonym of Rhipsalis micrantha subsp tonduzii according to a thesis by Alice Calvente.
R. micrantha forma kirbergii (Barthlott) Süpplie1993
Desc from Trop. Subtrop. Pflanzenw. 10: 11 (1974)
Plant - epiphytic, bushy, hanging to 2m long, branching from the tip and
regularly in a whorl.
Branches - 5 angled, mostly 4 angled, sometimes 6 angled, sharp
ribbed, side branches 4 - 7 mm thick, 18 - 30 cm long with yearly
covering - pale green, vesicles ca. 50m wide and 200 m long, with
smooth surface area. Stomata not sunk.
Areoles - very small, without bristles and with barely visible
tomentum, not sunken; New shoots with a very small deciduous leaf.
Flowers - Simple, lateral on the side branch, whitish hence
shiny, radial, 6 - 8 mm Æ and 6 - 8 mm long.
Perianth-segments - 5 - 7, the inner ones 4.5 mm long and to 2.5 mm wide.
Style - erect, ca. 4 mm long, with mostly 4 spreading papillose
lobes. At the base of the style is a whitish disk.
Stamens - 25 - 35, 2 - 3 mm long. Anthers white small.
Pericarp - light green, not sunken, bare, except for a single
Fruit - a globose naked berry, 5 mm thick and 6 mm long, dirty
white often reddish overlay.
Type locality - Epiphytic on old trees ca. 10 km north of
Chone, Province of Manabi, West Ecuador at 200m altitude
form of more arid habitats with long-pendulous, 4-6 ribbed/angled stem-segments,
and occurring both in Ecuador and Costa Rica, from sea level to 2000m
from Costa Rica.
(flower R. kirbergii KAF taken of R. tonduzii at Huntington
Botanical Gardens 9/99 KAF)