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This genus is accepted, and its native range is Tropical & Subtropical Asia.
Marsdenia

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Slender or woody lianas; latex white or clear
Morphology Leaves
Leaves opposite, petiolate, ovate to lanceolate
Morphology Reproductive morphology Inflorescences
Inflorescences axillary or extra-axillary, sessile or pedunculate, umbelliform or irregularly branched
Morphology Reproductive morphology Flowers Calyx
Sepals ovate, acute or obtuse
Morphology Reproductive morphology Flowers Corolla
Corolla ± succulent, white, yellow or green, lobed usually to more than half-way
Morphology Reproductive morphology Flowers Corona
Gynostegial corona of 5 ovoid or flattened fleshy staminal lobes, attached to anthers basally, shorter or longer than anthers, apex free Corolline corona absent
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium conical to cylindrical
Morphology Reproductive morphology Flowers Gynoecium Stigma
Stigmatic head as long as or longer than anthers, conical or acute
Morphology Reproductive morphology Flowers Pollinia
Pollinia erect, club-shaped or rounded, basally attached to translator arms; corpusculum narrowly ovate
Morphology Reproductive morphology Fruits
Follicles single or paired and spreading at an angle approaching 180°, thick, conspicously winged or weakly ribbed; seeds flattened, convex-concave, with a broad marginal wing, glabrous, brown, with a tuft of hairs at one end.
Distribution
Pantropical genus of about 340 species, about 25 of which occur in tropical Africa.

[FTEA]

Apocynaceae (part 2), David Goyder, Timothy Harris, Siro Masinde, Ulrich Meve, Johan Venter. Flora of Tropical East Africa, 2012

Morphology General Habit
Woody or wiry twiners, occasionally scandent shrubs.
Morphology General Exudate
Latex white or clear present then either forming longitudinal ridges down the corolla tube
Morphology Leaves
Leaves opposite, petiolate, glabrous or more usually pubescent
Morphology Reproductive morphology Inflorescences
Inflorescences extra-axillary or axillary; sessile or pedunculate, umbelliform or irregularly branched
Morphology Reproductive morphology Flowers Corolla
Corolla somewhat fleshy, mostly tubular but occasionally rotate; lobes frequently imbricate and contorted, but sometimes subvalvate
Morphology Reproductive morphology Flowers Corona
Corolline corona generally absent or forming an annulus around the gynostegium ( M exellii) Gynostegial corona of 5 ovoid or flattened fleshy staminal lobes, attached to anthers basally, shorter or longer than anthers, apex free; rarely vestigial, or absent
Morphology Reproductive morphology Flowers Pollinia
Pollinia erect, club-shaped or rounded, basally attached to translator arms; corpusculum narrowly ovate to subcylindrical
Morphology Reproductive morphology Flowers Gynoecium Style
Apex of stylar head flat, domed or rostrate, exserted beyond the anther appendages or concealed by them
Morphology Reproductive morphology Fruits
Follicles single or paired, thick and often somewhat woody, smooth, weakly ribbed or with conspicuous longitudinal wings or surface entirely obscured by the strongly contorted, cristate wings.
Morphology Reproductive morphology Seeds
Seed flattened, with a broad or narrow marginal wing and with a coma of hairs at one end
Note
SPOT CHARACTERS Fruiting material [fruit not known in M. exellii and M. taylori] Fig. 58, p. 192 Follicles with 4 well-developed, longitudinal wings – M. faulkneri, M. rubicunda, M. stelostigma Follicle surface ± completely obscured by the many cristate wings, or many longitudinal wings only slightly cristate – M. abyssinica Follicles lacking wings surface smooth – M. cynanchoides, M. latifolia, M. magniflora, M. sylvestris surface with longitudinal wrinkles at least when dry – M. crinita, M. macrantha, M. schimperi The delimitation of Marsdenia adopted here largely follows that of Omlor’s generic revision of the Marsdenieae (1998), but with the addition of Gymnema, formerly separated on the position of its corona, which is on the corolla rather than on the gynostegium. The loss (or gain) of staminal coronas may occur more frequently than earlier thought, and has been demonstrated in sister species in the distantly related Andean genus Philibertia Kunth (Goyder in K.B 59: 415–451 (2004)) In Philibertia, taxa lacking a staminal corona frequently compensate by the possession of swellings on the corolla which perform the same function of restricting pollinator access to five regions of the tube and gynostegium The situation in African Marsdenia parallels this exactly, with two morphologically similar species distinguished florally by the position of the corona – the predominantly tropical species, M sylvestris, formerly Gymnema sylvestre, has a corona derived from the corolla, while in the South African species M dregea, the corona is gynostegial A similar generic concept was adopted by Forster (1995) for Asian species Comparable parallel patterns of variation in Philibertia and Marsdenia include sessile versus stipitate gynostegia, and the presence or absence of prominent stylar head appendages Fruit ornamentation, while striking in some African Marsdenias, appears to behave in a similar way, with some species possessing prominent longitudinal wings, while apparently closely related species lack them.

Native to:

Angola, Argentina Northeast, Argentina Northwest, Assam, Bangladesh, Belize, Benin, Bismarck Archipelago, Bolivia, Borneo, Botswana, Brazil Southeast, Burkina, Burundi, Cabinda, Cambodia, Cameroon, Caprivi Strip, Central African Repu, Chad, China South-Central, China Southeast, Colombia, Comoros, Congo, Costa Rica, Dominican Republic, East Himalaya, Ecuador, El Salvador, Equatorial Guinea, Eritrea, Ethiopia, Gabon, Ghana, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Hainan, Haiti, Honduras, India, Ivory Coast, Jamaica, Japan, Jawa, Kenya, Korea, Laos, Leeward Is., Lesser Sunda Is., Liberia, Madagascar, Malawi, Malaya, Mali, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Mozambique, Myanmar, Namibia, Nansei-shoto, Nepal, New Caledonia, New Guinea, New South Wales, Nicaragua, Niger, Nigeria, Norfolk Is., Northern Territory, Pakistan, Panamá, Paraguay, Peru, Philippines, Puerto Rico, Queensland, Rwanda, Saudi Arabia, Senegal, Sierra Leone, Socotra, Solomon Is., Somalia, South Australia, Sri Lanka, Sudan, Sulawesi, Sumatera, Taiwan, Tanzania, Thailand, Tibet, Togo, Uganda, Venezuela, Victoria, Vietnam, West Himalaya, Western Australia, Windward Is., Yemen, Zambia, Zaïre, Zimbabwe

Marsdenia R.Br. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Mar 1, 2011 Middleton, D.J. et al. [904], Thailand K000577199
Mar 1, 2011 Middleton, D.J. et al. [1268], Thailand K000577198
Mar 1, 2011 Middleton, D.J. et al. [1223], Thailand K000577202
Jan 1, 2005 Scott, S. [M 02-80], Indonesia 74224.000
Feb 1, 1998 Salino, A. [4047], Brazil K001060819
Willis, F. [18], Vietnam 61377.000
Silva, M.A. dos [4193], Brazil K001060822
Hind, D.J.N. [64], Brazil K000095843
De Silva, F. [Cat. no. s.n.] K001132420
Souza, V.C. [5189], Brazil K001060820
Wallich, N. [Cat. no. s.n.], Myanmar K001132421
Wallich, N. [Cat. no. s.n.], Myanmar K001132422
Miranda-Silva, E. [49], Brazil K000096513
Elmer, A.D.E. [20334], Sabah K000873055
Sousa, V.C. [5189], Brazil K001060821
Barbosa, E. [1], Brazil K000096515

First published in Prodr. Fl. Nov. Holland.: 460 (1810)

Accepted by

  • Davidse, G. & al. (eds.) (2009). Flora Mesoamericana 4(1): 1-855. Universidad Nacional Autónoma de México, México, D.F.
  • Goyder, S., Harris, T., Masinde, S., Meve, U. & Venter, J. (2012). Flora of Tropical East Africa, Apocynaceae(2): 1-530.
  • Nazar, N. & al. (2019). Phylogenetic relationships in Apocynaceae based on nuclear PHYA and plastid trnL-F sequences, with a focus on tribal relationships Caryologia; Giornale di Citologia, Citosistematica e Citogenetica 72: 555-81.

Literature

Flora of Somalia

  • Flora Somalia, Vol 3, (2006) Author: by D. Goyder [updated by M. Thulin 2008]
  • Omlor, Gen. Revis. Marsdenieae (Asclepiadaceae): 257 pp. (1998).

Flora of Somalia
Flora of Somalia
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Flora of Tropical East Africa
Flora of Tropical East Africa
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Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Science Photographs
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/