New Zealand Journal of Botany abstract

Identification and distribution of the Marlborough pink brooms, Notospartium carmichaeliae and N. glabrescens (Fabaceae - Galegeae), in New Zealand

P. B. HEENAN

Manaaki Whenua - Landcare Research
P. O. Box 69
Lincoln, New Zealand

Abstract  Notospartium is accepted as comprising three species, N. carmichaeliae, N. glabrescens, and N. torulosum. However, in the recent literature, N. carmichaeliae and N. glabrescens have been confused or one treated as a synonym of the other. These two species are allopatric, growing on riparian bluffs, cliffs, and alluvium in western and eastern Marlborough respectively; they are separated by the Awatere Fault, which runs parallel to the Awatere River. The southern limit of N. glabrescens and the northern limit of N. torulosum fall on either side of the Hope Fault. N. glabrescens is a calcicole, occurring on soils derived from base-rich limestone, sandstone, mudstone, and siltstone parent materials. N. carmichaeliae occurs on well-indurated greywackes of the Torlesse Supergroup which are base-poor. The pods, a key diagnostic feature of both species, are illustrated and conservation status is reassessed.

Keywords  Fabaceae; Galegeae; Notospartium; N. carmichaeliae; N. glabrescens; N. torulosum; identification; distribution; conservation; New Zealand flora

B96010

Received 12 February 1996; accepted 27 June 1996

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