Chestnut pine (Farjon 2005).
The sole species in Diselma Hooker 1857. Syn: Fitzroya archeri Bentham et Hooker (Vidakovic 1991). Lectotype R.C. Gunn s.n., "summit of the western mountains and falls of Meander," 1849.03.09, K.
A dioecious shrub or small tree, 1-5-6 m tall, variously of compact or straggling habit, branchlets divided into fine sprays. Leaves scale-like, closely pressed and overlapping, alternately opposite or sometimes whorled, blunt at the apex. Male cones terminal, oblong, with the stamens in 3 or 4 pairs. Female cones terminal, solitary, small, globose, 5 mm across, composed of two pairs of scales, the upper pair fertile, with 2 seeds. Seeds small, with 2-3 wings. Chromosomes n = 11 (Dallimore et al. 1967, Vidakovic 1991).
This species can be confused with Microcachrys tetragona and Pherosphaera hookeriana, two Tasmanian podocarps that are also shrubs with very small scale-like leaves. However, the female cones, although small, are easily distinguished.
Tasmania: the western coast ranges and Lake St. Clair, at elevations of 910-1220 m (Dallimore et al. 1967). Hardy to Zone 8 (cold hardiness limit between -12.1°C and -6.7°C) (Bannister and Neuner 2001).
It is reported to grow as a tree, at sizes up to over 10 m tall and 60 cm dbh, at Mount Read near Roseberry (Corbett [no date]).
Brown, M.J., J.B. Kirkpatrick and A. Moscal. 1983. An atlas of Tasmania's endemic flora. Tasmania Conservation Trust, 102, Bathurst Street, Hobart 7000, Tasmania. 110pp. ISBN 0959981683.
Corbett, Keith. [no date]. The Mount Read Huon Pine. www.apstas.com/Mt__Read_Huon_pine.html, accessed 2010.03.29.
Baker, R.T. and H.G. Smith. 1910. A Research on the Pines of Australia. N.S.W. Technical Education Series No. 16. Sydney.
Farjon (2005) provides a detailed account, with illustrations.
Hughes, Stephen. 1981. Diselma archeri. http://www.anbg.gov.au/gnp/gnp11/diselma-archeri.html, accessed 2006.03.08. Includes photos and horticultural advice.
Last Modified 2013-03-27