Original Research

Two new species of Nemesia (Scrophulariaceae) from the southern Cape, South Africa

K. E. Steiner
Bothalia | Vol 40, No 2 | a206 | DOI: https://doi.org/10.4102/abc.v40i2.206 | © 2010 K. E. Steiner | This work is licensed under CC Attribution 4.0
Submitted: 22 July 2010 | Published: 24 July 2010

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K. E. Steiner, Department of Botany, California Academy of Sciences, United States

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Abstract

Two new species of Nemesia Vent, are described from South Africa. Nemesia fourcadei is an annual with small white flowers, a yellow-orange pubescent palate, and violet lines at the base of the upper lip. It differs from the similar looking N. lucida Benth. by having larger flowers with a more prominent spur (mostly 3.5—4.5 mm long vs < 1.5 mm) and a pubescent palate. N. fourcadei is known from only two locations in the southern Cape. N. elata is a facultative perennial with white flowers, a lavender to purple reverse, and a white or very pale yellow palate. It is known only from the Langeberg and Oute-niqua Mountains between Swellendam and Montagu Pass. It is closest to N. fourcadei. but differs from that species by its more robust habit, the absence of a boss inside the corolla tube at the base of the hypochile, and a spur that is violet to purple at the base.

Keywords

Nemesia Vent; new species; Scrophulariaceae; South Africa; southern Cape

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