Rhipsalis aurea

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Rhipsalis aurea

Rhipsalis aurea M.F.Freitas & J.M.A.Braga in Syst. Bot. 34(3): 505-509, figs. 1-3. 2009 sec. de Fatima Freitas & al. 20091
    • Isotype: Brazil, Estado do Rio de Janeiro, município de Nova Friburgo, Macaé de Cima, estrada de acesso pela BR 116, alt. 1201 m, 22°21'50"S, 42°30'8"W, 27 Oct 2004, J. M. A. Braga 7494 (R: R000221887) https://plants.jstor.org/stable/10.5555/al.ap.specimen.r000221887
    • Holotype: Brazil, Estado do Rio de Janeiro, município de Nova Friburgo, Macaé de Cima, estrada de acesso pela BR 116, alt. 1201 m, 22°21'50"S, 42°30'8"W, 27 Oct 2004, J. M. A. Braga 7494 (RB)
  • 1. de Fatima Freitas, M., Calvente, A. & Braga, J. M. A. 2009: A New Species of Rhipsalis (Cactaceae) from Brazil. – Systematic Botany 34: 505–509

Distribution (General)

Brazil: Rio de Janeiro, Serra dos Órgãos - Três Picos State Park in the city of Nova Friburgo. Known only from five collections from three different localities.A

Diagnosis

Haec species a R. pulchra Loefgr. similis, sed ab ea habito suberecto minore, segmentis secundariis caulis minoribus, crescentia definita, perigonio flavo-aureo, fructu adpresso et globoso distinguitur. A

Description

Rupicolous or epiphytic, 60–80 cm long. Roots stiff, grayish white, adventitious roots absent. Branches suberect to almost horizontal or slightly pendent, erect when young, branching subacrotonically or mesotonically. Stem segments cylindrical; primary of indeterminate growth, basal 15–45 cm long, 4–6 mm diam, suberect, stiff, woody; subsequent 3–4, 14–20 cm long, 3.7–4.7 mm diam, suberect, stiff but succulent, dark green; secondary smaller, of determinate growth, 2–9 cm long, 1.2–3 mm diam, pendent, succulent, dark green. Areoles ca. 0.5 mm diam, green, reddish or brown; scales 1–2, ca. 0.5 × 1 mm, triangular; hairs absent in mature segments and present in young segments. Flowers 1.6–1.7 × 1.5–2 cm at anthesis, campanulate, not conspicuously immersed in the areoles; absent to 1 per areole, diurnal, inodorous, mostly subapical or lateral, oblique to slightly perpendicular to the stems; pericarpel 0.2–0.3 × 0.4 mm, green to yellow, turbinate, distinctly truncate; perigonium segments golden yellow, immaculate, membranaceous, 0.2–1.3 × 0.3–0.6 mm, gradually longer and thinner towards the center, suborbicular, triangular to oblong, apex rounded, external spreading to suberect, internal erect. Stamens polystichous spreading or with a discrete separation of the internal facing outwards and external facing inwards, yellow; filaments 4–7 mm long; anthers 0.5–0.6 mm long. Ovary 1.7–2 mm long, turbinate; style 8 mm, yellow; stigma 4–6 lobed, 2 mm long, yellow, oblong, patent. Fruit indehiscent, glabrous: when immature cupulate, strongly truncate, green; when mature 6–7.7 × 6–8 mm, depressed-globose, translucent green.A

Bibliography

A. de Fatima Freitas, M., Calvente, A. & Braga, J. M. A. 2009: A New Species of Rhipsalis (Cactaceae) from Brazil. – Systematic Botany 34: 505–509