Rhipsalis triangularis Werderm.
Images | Description | Publications | Reduced Synonyms
Description
| The accepted name Rhipsalis triangularis Werderm. was published in Repert. Spec. Nov. Regni Veg. 42: 3. 1937. The geographic range is Brazil (Rio de Janeiro, only known from west of the city of Rio de Janeiro near Prainha, Brazil.) found at elevations of unreported meters with an endangered status of critically endangered. Rhipsalis triangularis is classified in the subgenus Phyllarthrorhipsalis. Observed growing as an epiphyte or heliophyte. Overall habit is pendant or semi-erect, branches are monomorphic (single stem shape) and acrotonic (stems form from the tips of previous stems). Stems are 2 to 5 angled, margins have low to deep crenations (slightly to deeply scalloped), bristles are absent. Main stems are determinate (seasonal growth is about the same length), 6cm-24cm x 1cm-6cm. Flowers are rotate: sub-patent or patent (wheel shaped: partial to wide open), 1.2cm x 1.5cm-2.5cm. Petals from 10 to 12, sepals from 3 to 4. Inner petals are white, outer petals are white, yellow, green, pink or red. Stamen are white, from 70 to 160. Stigma lobes from 5 to 7. Flower ovary is obconical, 0.5cm x 0.6cm. Flowering position on the stem is lateral and the flower orientation in relation to the stem is perpendicular. Does repeat flowering per areole. A maximum of 3 flowers were reported at a single areole. Areole position in the stems is superficial (flower ovary is visible on the surface of the stems during bud development). Trichomes or wool is absent at the areoles after flowering. Unripe fruit is green, pink or magenta. Ripe fruit is globose; white, pink or magenta, 0.6cm-0.7cm x 0.7cm-0.8cm. Taxonomic treatment and description were derived from:
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Rhipsalis triangularis referenced publications
| Title | Authors | Type | Journal | Year | Volume | Issue | Pages | Publisher |
|---|---|---|---|---|---|---|---|---|
| Epifytische cactussen, rhipsalis.eu. Accessed on: 15 Jan. 2025 | Aat van Uijen | Website | 2025 | |||||
| Royal Botanic Gardens Kew | Plants of the World Online. Accessed on: 15 Jan. 2025 | Website | 2025 | ||||||
| The Caryophyllales Network 2015+ [continuously updated]: A global synthesis of species diversity in the angiosperm order Caryophyllales. Accessed on: 15 Jan. 2025 | Website | 2025 | ||||||
| WFO The World Flora Online. Accessed on: 15 Jan. 2025 | Website | 2025 | ||||||
| The IUCN Red List of Threatened Species. Version 2024-2. accessed on 2025-01-07 | Website | 2024 | ||||||
| Rio de Janeiro - Cactaceae of the State of Rio de Janeiro (version 1, 8/2022), fieldguides.fieldmuseum.org | Diego Rafael Gonzaga, Maria de Fátima Freitas, Alice Calvente | Website | 2022 | |||||
| Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family | Nadja Korotkova, David Aquino, Salvador Arias, Urs Eggli, Alan Franck, Carlos Gómez-Hinostrosa, Pablo C. Guerrero, Héctor M. Hernández, Andreas Kohlbecker, Matias Köhler, Katja Luther, Lucas C. Majure, Andreas Müller, Detlev Metzing, Reto Nyffeler, Daniel Sánchez, Boris Schlumpberger, Walter G. Berendsohn | Journal Article | Willdenowia | 2021 | 51 | 2 | 251 – 270 | Botanic Garden and Botanical Museum Berlin (BGBM) |
| Cactaceae in Flora do Brasil 2020. Jardim Botânico do Rio de Janeiro. Accessed on: 15 Jan. 2025 | Daniela C. Zappi, Nigel P. Taylor | Website | 2020 | |||||
| Flora do Rio de Janeiro: Cactaceae | Maria de Fátima Freitas, Alice Calvente, Diego Rafael Gonzaga | Journal Article | Rodriguésia | 2020 | 71 | |||
| Rhipsalis, cactussen uit het tropische woud 1 | Aat van Uijen | Journal Article | Succulenta | 2017 | 96 | 6 | 270-275 | |
| A New Subgeneric Classification of Rhipsalis (Cactoideae, Cactaceae) | Alice Calvente | Journal Article | Systematic Botany | 2012 | 37 | 4 | 983 – 988 | The American Society of Plant Taxonomists |
| Molecular Phylogeny, Evolution, and Biogeography of South American Epiphytic Cacti | Alice Calvente, Daniela C. Zappi, Félix Forest, Lúcia G. Lohmann | Journal Article | International Journal of Plant Sciences | 2011 | 172 | 7 | 902-914 | |
| Molecular phylogeny, evolution and systematics of Rhipsalis (Cactaceae) | Alice Calvente | Ph.D. Thesis | 2010 | Instituto de Biociências da Universidade de São Paulo | ||||
| Neotypification of Rhipsalis triangularis Werderm. (Cactaceae), a critically endangered species from southeastern Brazil | João Marcelo Alvarenga Braga, Maria de Fátima Freitas | Journal Article | Adansonia | 2010 | 32 | 2 | 235-238 | Muséum national d'Histoire naturelle, Paris |
| Cactus Lexicon | Curt Backeberg, Walther Haage | Book | 1966 | 205,220-222,440-449, 647, 750 | Blandford Press Ltd. (1966-1973) | |||
| A remarkable new species of Rhipsalis Gaertner (Cactaceae) and notes on other Brazilian species | Nigel P. Taylor, Igor Souza Ribeiro, Lidyanne Y. S. Aona, Daniela C. Zappi | Journal Article | Bradleya | 2026 | 44 | 41-47 |
Reduced Synonyms
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