White-Flowered Philotheca (Philotheca Basistyla) Interim Recovery Plan
Karen Bettink, Robyn Luu, Kate Brunt and Andrew Brown
Wildlife Management Program No. 170
Department of Conservation and Land Management, July 2004
ISNN 0816-9713
About the document
The first known collection of Philotheca basistyla, housed at the Western Australian Herbarium, was made in 1990 by Frans and Neillie Mollemans between Trayning and Kellerberrin (Population 1). In 1997 a second population was located on a nearby roadside. Currently Philotheca basistyla is known from 2 populations that together contain approximately 170 adult plants.
Philotheca basistyla is an erect shrub to 1 m tall and 80cm across. Plants typically have glossy or waxy dark green foliage. The leaves, up to 9 mm long and 1 to 1.5 mm wide, are thickened, circular in cross-section, glandular and ascending. There are numerous solitary white flowers at the ends of the branchlets (Brown et al. 1998).
Philotheca basistyla is endemic to Western Australia where it is restricted to a geographic range of a few kilometres between Trayning and Kellerberrin. It grows in deep yellow sand in dense scrub heath vegetation (Brown et al. 1998).
Associated species include Eucalyptus leptopoda, Grevillea eriostachya, Melaleuca cordata, Santalum acuminatum and Allocasuarina acutivalvis, Baeckea muricata, B. floribunda, Hakea francisiana, M. conothamnoides, Daviesia sp., Choretrum pritzelii, Phebalium tuberculosum, Pimelea sp. and Hibbertia sp. (Mollemans 1993).
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