Saturday, February 24, 2018

[Botany • 2018] Hyobanche hanekomii • A New Species (Orobanchaceae) from the Western Cape of South Africa

Hyobanche hanekomii  A. Wolfe
  H. atropurpurea Bolus
  H. sanguinea L. 

in Wolfe, 2018. 


The new species Hyobanche hanekomii is described and illustrated. It is somewhat intermediate in appearance between H. sanguinea and H. atropurpurea, but can be distinguished from both in several morphological characters that are presented. The new species occurs in the Cape Fold Belt Mountains of the northwest part of the Western Cape.

 Key words: Cape Floristic Region, holoparasite, parasitic plant

FIGURE 3. Comparison of Hyobanche hanekomii (A), H. atropurpurea (B), and H. sanguinea (C).
Upper panel represents side and front views of corollas to scale (bar = 10 mm).
Lower panel shows inflorescences (not to scale). Illustrations and photographs by A. Wolfe; photos are from living plants in prime blooming condition. Vouchers: (A) upper panel: Hanekom 2887 (1997, NBG); lower panel: Wolfe 1009 (2001, OS); (B) Wolfe 1227 (2006, OS); (C) Wolfe 1387 (2013, OS). 

Hyobanche hanekomii A. Wolfe spec. nov.
. Corolla deep magenta to magenta-red, inflated above the tube and semi-galeate, and 1.5–2.0 times the length of the calyx. 

TYPE:—South Africa. Western Cape: ..., 400 m, 26 September 1997, W.J. Hanekom 2887 (Holotype: NBG 759260!) 

Distribution. Rocky soils in Cape Fold Belt Mountains of northwestern region of the Western Cape, from Citrusdal area to Giftberg (Fig. 2). 

Etymology. The specific epithet is in honour of Mr. Willem Johannes Hanekom (b. 1931). Mr. Hanekom is a keen observer of the flora of the Western Cape, and introduced the author to this new species in 2001. He had made a collection in 1997 (W. J. Hanekom 2887), which included the following note: “Hyobanche sanguinea L. but with influence of H. atropurpurea H. Bol.” 

Andrea D. Wolfe. 2018. Hyobanche hanekomii (Orobanchaceae), A New Species from the Western Cape of South Africa. Phytotaxa. 340(1); 93–97.  DOI: 10.11646/phytotaxa.340.1.5

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