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Bedigian, D. 2013. Ecogeography and taxonomy of Rogeria J. Gay ex Delile (Pedaliaceae). Webbia: Journal of Plant Taxonomy and Geography, 68(2): 103-126


Description:

Ecogeography and taxonomy of Rogeria J. Gay ex Delile (Pedaliaceae).

Summary / Notes:

Presented here are an extensive revision of Rogeria J. Gay ex Delile, a key to its three accepted species, a description of a new species, Rogeria armeniaca Bedigian from the Kunene region of Namibia and Angola, and a description of a new subspecies, Rogeria adenophylla subsp. rosea Bedigian, in Namibia and Angola. Specimens of the new species and subspecies were until now included in the polymorphic Rogeria adenophylla J. Gay ex Delile. Morphology and preliminary molecular study of the genus Rogeria supports the recognition of the new taxa. Rogeria armeniaca is identifed by its distinctive apricot-coloured flowers, and glossy, elongate, deeply lobed leaves with sharply pointed, acute apices. Subsp. rosea is distinguished by its bright rose-pink corolla with a golden yellow interior, and broadly deltoid or lobed, pubescent leaves with truncate apices. Morphological traits allowing Rogeria to survive in hot, arid environments include mucilage-bearing glandular trichomes and persistent woody capsules that decompose slowly. Keywords: Angola, arid, disjunction, indumenta, Kaokoland, Namibia, Pedaliaceae, Rogeria, serotiny, Sudan.

Year: 2013

Type: Journal Article

URL: http://www.tandfonline.com/doi/full/10.1080/00837792.2013.867609#.VHWR-2ctBHg


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