New Zealand Journal of Botany abstracts

---

A new species of Oreomyrrhis (Apiaceae) from southern South Island, New Zealand, and comparison of its limestone and ultramafic habitats

P. B. Heenan
B. P. J. Molloy

Allan Herbarium
Landcare Research
P.O. Box 69
Lincoln, New Zealand

Abstract  Oreomyrrhis basicola is described as a new species from southern New Zealand. O. basicola is segregated from the O. rigida complex by its grey-green to blue-grey leaves, fewer primary pinnae, and primary pinnae that are only occasionally further divided with secondary pinnae. It is known from two base-rich habitats: ultramafic substrates in northern Southland and limestone in northern Otago. These substrates have very high base saturations, but differ in that the exchange complex of limestone substrates is dominated by calcium and that of the ultramafics is dominated by magnesium. O. basicola is known from three subpopulations, each with small numbers of plants, and is, therefore, considered to be Nationally Endangered.

Keywords  Apiaceae; Oreomyrrhis; O. basicola; O. rigida; taxonomy; habitats; basicolous; karstland; soil chemistry; conservation; New Zealand flora

B05039; Received 5 September 2005; accepted 21 December 2005; Online publication date 4 April 2006
New Zealand Journal of Botany, 2006, Vol. 44: 99–106
0028–825X/06/4401–0099 © The Royal Society of New Zealand 2006

PDF file of entire paper: Print-quality (3303K) | screen-quality (430K)

---

This year's abstracts | Journal home page | All abstracts | Publishing home page