Difference between revisions of "Gymnanthemum"

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Robinson H, Funk V (2014) Gymnanthemum koekemoerae (Compositae, Vernonieae), a new species from South Africa. PhytoKeys 36 : 59–65, doi. Versioned wiki page: 2014-04-30, version 51567, https://species-id.net/w/index.php?title=Gymnanthemum&oldid=51567 , contributors (alphabetical order): Pensoft Publishers.

Citation formats to copy and paste

BibTeX:

@article{Robinson2014PhytoKeys36,
author = {Robinson, Harold AND Funk, Vicki A.},
journal = {PhytoKeys},
publisher = {Pensoft Publishers},
title = {Gymnanthemum koekemoerae (Compositae, Vernonieae), a new species from South Africa},
year = {2014},
volume = {36},
issue = {},
pages = {59--65},
doi = {10.3897/phytokeys.36.7386},
url = {http://www.pensoft.net/journals/phytokeys/article/7386/abstract},
note = {Versioned wiki page: 2014-04-30, version 51567, https://species-id.net/w/index.php?title=Gymnanthemum&oldid=51567 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - Gymnanthemum koekemoerae (Compositae, Vernonieae), a new species from South Africa
A1 - Robinson H
A1 - Funk V
Y1 - 2014
JF - PhytoKeys
JA -
VL - 36
IS -
UR - http://dx.doi.org/10.3897/phytokeys.36.7386
SP - 59
EP - 65
PB - Pensoft Publishers
M1 - Versioned wiki page: 2014-04-30, version 51567, https://species-id.net/w/index.php?title=Gymnanthemum&oldid=51567 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/phytokeys.36.7386

Wikipedia/ Citizendium:

<ref name="Robinson2014PhytoKeys36">{{Citation
| author = Robinson H, Funk V
| title = Gymnanthemum koekemoerae (Compositae, Vernonieae), a new species from South Africa
| journal = PhytoKeys
| year = 2014
| volume = 36
| issue =
| pages = 59--65
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/phytokeys.36.7386
| url = http://www.pensoft.net/journals/phytokeys/article/7386/abstract
| pmc =
| accessdate = 2024-12-22

}} Versioned wiki page: 2014-04-30, version 51567, https://species-id.net/w/index.php?title=Gymnanthemum&oldid=51567 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Asterales
Familia: Compositae

Name

Gymnanthemum Cass. – Wikispecies link – Pensoft Profile

Remarks

Shrubs or small trees moderately to densely branching; stems often felted, hairs rarely asymmetrically T-shaped. Leaves alternate; petioles short, winged or elongate; blades membranaceous to rather coriaceous, margins entire to serrate or dentate, upper surfaces essentially glabrous and somewhat glossy to arachnoid tomentose. Inflorescences terminal, densely corymbiform, with small bracteoles; peduncles short; involucral bracts coriaceous, 25–35, 4–5-seriate, inner bracts often deciduous. Florets 3–50; corolla white to violet, anther base broadly tailed, tails often long, apical appendage glabrous; style base without or with scarcely distinct node; style branches with stout, pointed sweeping hairs. Achenes 5–10-costate, raphids short, elongate or not evident; pappus of many rather persistent capillary bristles, often with broadened tips, with outer series of short squamellae. Pollen sublophate. Chromosome number n = 10, 20. More than 43 species are found in sub-Saharan Africa, Madagascar, Southern Asia, and also introduced into Brazil.
The genus Gymnanthemum was described by Cassini (1817)[1], included in Vernonia by Candolle (1836)[2] and Bentham (1873)[3] and resurrected by Robinson and Kahn (1986)[4] and Robinson (1999)[5]. The generic limits have changed and are now more narrow than in 1999. Currently the genus has nine species in southern Africa (Robinson et al. in prep.), five of which are endemic to South Africa; a key to those is provided here. The four more widespread species are Gymnanthemum theophrastifolium (Schweinf. ex Oliv. & Hiern) H. Rob., Gymnanthemum coloratum (Willd.) H. Rob. & B. Kahn, Gymnanthemum amygdalinum (Del.) Sch. Bip. ex Walp. and Gymnanthemum myrianthum (Hook. f.) H. Rob. The still unfinished monograph will cover all species of Vernonieae from Southern Africa with descriptions, keys and pollen images (Robinson et al. in prep.).

Taxon Treatment

  • Robinson, H; Funk, V; 2014: Gymnanthemum koekemoerae (Compositae, Vernonieae), a new species from South Africa PhytoKeys, 36: 59-65. doi

Other References

  1. ↑ Cassini H (1817) Aperçu des genres nouveaux formés par M. Henri Cassini dans la famille des Synanthérées. Bulletin de la Société Philomatique de Paris 1817: 10-13.
  2. ↑ Candolle A (1836) Genres nouveaux appartenant à la famille des Composées ou Synanthérées. Seconde décade. Archives de Botanique 2: 514-519.
  3. ↑ Bentham G (1873) Ordo Compositae. In: Bentham G Hooker J. Genera plantarum, vol. 2(1). Lovell Reeve & Co., London, 163–533.
  4. ↑ Robinson H, Kahn B (1986) Trinervate leaves, yellow flowers, tailed anthers, and pollen variation in Distephanus Cassini (Vernonieae: Asteraceae). Proceedings of the Biological Society of Washington 99: 493-501. doi: 10.1098/rspb.1986.0036
  5. ↑ Robinson H (1999) Revisions in paleotropical Vernonieae (Asteraceae). Proceedings of the Biological Society of Washington 112(1): 220-247.
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