Elsevier

South African Journal of Botany

Volume 90, January 2014, Pages 118-127
South African Journal of Botany

One name change and three new species of Pelargonium, section Hoarea (Geraniaceae) from the Western Cape Province

https://doi.org/10.1016/j.sajb.2013.10.013Get rights and content
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Highlights

  • Name change for Pelargonium sulphureum

  • Three new species are described.

  • All four species have yellow flowers and short stamens.

  • All four species have simple to trifoliate leaves.

Abstract

A new name, Pelargonium flavidum E.M. Marais, is designated for Pelargonium sulphureum R. Knuth (1912), non (Sweet) Steudel. (1841). Another three species of section Hoarea (Sweet) DC., Pelargonium pallidoflavum E.M. Marais, Pelargonium weberi E.M. Marais and Pelargonium sabulosum E.M. Marais, all with yellow flowers and simple, ovate leaves are newly described. All four species treated here are tuberous species, occurring in the Western Cape and sharing similarities with regard to floral colour, spathulate petals, five very short fertile stamens concealed in the floral sheath and simple leaves. Three of them have prostrate leaves and only P. sabulosum has patent to erect petioles. An illustration and a distribution map of each species are provided as well as a key for the identification of the seven species of section Hoarea with yellow flowers, short stamens and simple to trifoliolate, ovate laminae.

Keywords

Geraniaceae
Hoarea
New species
Pelargonium
Southern Africa
Taxonomy

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