Biology:Marsdenia mackeeorum
| Marsdenia mackeeorum | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Gentianales |
| Family: | Apocynaceae |
| Genus: | Marsdenia |
| Species: | M. mackeeorum
|
| Binomial name | |
| Marsdenia mackeeorum | |
Marsdenia mackeeorum is a species of vine in the family Apocynaceae. It is endemic to New Caledonia.[3]
Description
Marsdenia mackeeorum is a slender twining vine growing to 3 m. It has white latex. The smooth leaves are differently coloured on their upper and lower surfaces (discolorous), on petioles (stems) which are 5–10 mm (0.20–0.39 in) long. They are linear to elliptic and 5–13 cm (2.0–5.1 in) long by 0.7–0.9 cm (0.28–0.35 in) wide, rounded at the base and pointed at the tip, and have revolute margins.[1]
Vegetatively, this species differs little from M. microstoma, but is distinguished from it by its bostrychoid inflorescence on a rachis which continues to grow and flower, whereas M. microstoma has a different inflorescence type and all the flowers on it open at the same time.[1]
Conservation status
Some of the localities in which it is found are under threat of mining, and bushfires are a threat to the populations in the maquis vegetation, With an extent of occurrence (EOO) of 1,950 km2 (750 sq mi), and an area of occupancy (AOO) of 32 km2 (12 sq mi), it satisfies the criteria for it to be declared vulnerable under the IUCN criteria of 2012.[4][1]
Etymology
The specific epithet, mackeeorum (from la 'MacKees'), honours Hugh Shaw MacKee and his wife, Margaret.[5][2] Hugh MacKee collected the type specimen in Grande-Terre, South Province, Yaté, Gouemba, New Caledonia at an altitude of 500 m (1,600 ft), on March 22, 1981 (holotype P00607333, isotype P00607334).[2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Meve, Ulrich; Gâteblé, Gildas; Liede-Schumann, Sigrid (2017). "Taxonomic novelties in Apocynaceae subfam. Asclepiadoideae from New Caledonia". Adansonia 39 (1): 55–70. doi:10.5252/a2017n1a5. ISSN 1280-8571.
- ↑ 2.0 2.1 2.2 "Marsdenia mackeeorum". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew. https://www.ipni.org/n/77164442-1.
- ↑ Govaerts, R. et al. (2019) Plants of the world online: Marsdenia mackeeorum. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 16 February 2019.
- ↑ IUCN 2012. — IUCN Red List Categories and Criteria: Version 3.1 Second edition. IUCN Species Survival Commission, IUCN, Gland, Switzerland and Cambridge.
- ↑ MacKee, l’homme aux 46 000 récoltes Les herbonautes. Retrieved 14 February 2019.
External links
- Marsdenia mackeeorum Meve, Gâteblé & Liede, endemia.nc Flore et Faune de Nouvelle-Calédonie.
- Marsdenia mackeeorum GBIF Images of specimens, map
Wikidata ☰ Q61742052 entry
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