Rhipsalis barthlottii Ralf Bauer & N. Korotkova, sp. nov.

Translation from the German by Derek Butcher 10/2017 (Note: Software could not save all original characters, so there may be minor errors.) The original appeared in "Eine Neue Rhipsalis aus Brasilien -- Rhipsalis barthlotti," Kakteen und andere Sukkulenten 67 (11) 2016

Rhipsalis barthlottii Ralf Bauer & N. Korotkova, sp. nov.

Type: Brazilian; Rio de Janeiro; Serra dos Orgãos, Unterer Nationalpark, 8.10.1973; Barthlott in Rauh 35831 (holotype B 10 0525903!; isotype B 81 0013066 in spirit!).

Diagnosis: Differs from Rhipsalis crispata and R. oblonga in its red fruits (instead of white) and in its golden yellow flowers (instead of whitish or pale yellowish).

Description: Plant forming a small epiphytic shrub with 80-100 (-150) cm long drooping branches, divided into phyllocladies and acroton branched (mostly one to three). Phyllocladia (70-) 100-160 mm long, 25-45 mm wide (widest place after about half to two thirds of the phyllocladium), 0,5-1,0 mm thick (2-3 mm actually only in the area of ??the central (Basal third to basal half of the phyllocladium strongly tapered down to the length), flat (two-lobed), green; the edges are corrugated out of the plane of the drive (the highest point of the incipient areole is closely approached); Areole distances 18-45 mm (for the phyllocladial base also more [45-75 mm], to the phyllocladial tip shorter [5-10 mm]); Notches 4-7 mm above the lowest point where the areole sits, protruding; per margin 3-4 areoles, these inconspicuous or up to 0.7 mm wide with 0-4 very fine, 1-3 mm long, inconspicuous, bristle-like spines; the phyllocladia apically somewhat abruptly ending in a 3 mm long collection column; Phyllocladia on the plant basis usually much longer (up to about 250 mm), rather narrow, round or very short winged and a higher number of Areolen having. 1-2 (-3) flowers per areole, 11-12 mm long, 10-14 (-17) mm Ø (depending on how far the perianth segments fold back). Pericarpell 2.5-3.5 mm long, 2.0-2.5 mm wide, cylindrical, naked, green. 8-9 perianth segments, 6-8 mm long, (1,8-) 2,0-3,0 (-3,5) mm wide (the two or three outermost only 1.5-4.0 mm long and 2 , 5-3.5 mm wide), broad lanceolate with mostly rounded tip, strong golden-yellow to brown-yellow. 50-70 (-85) Stamens, striking myrtle-like the flower dominant, 3-7 mm long, threadlike thin with tiny anthers, white. Stamp 8-9 mm long, 0.5 mm wide, with 2-4 scarlet rays (1.0-2.5 mm long), white. Fruits approximately spherical to globular, about 5-6 mm long and 5 mm wide, with adherent dried perianthrest; with a red, naked, smooth and translucent, very thin epidermis; Pulpa sticky, colorless-translucent, approx. 5-23 black, oblong (about 1 mm long, about 0.5 mm wide) containing seeds.
Sequence Data: Sequences of the holotype are available in the European Nucleotide Archive (ENA, http: //www.ebi.ac.uk/ena) under accession numbers trnK / matK FN669675, rpl16 FN673579, psbA-trnH FN669100, trnQ-rps16 FN677829.

The original article contains seven color photos.


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