A.S. George, Fl. Aust. 8:392 (1982).
Synonymy: Didymotheca thesioides Hook. f., Lond. J. Bot. 6:279 (1847); D. veroniciformis F. Muell., Linnaea 25:438 (1853).
Common name: Broom wheel-fruit.
Shrubs to 70 cm high, with slender erect almost virgate branches usually with decurrent ridges from the leaf bases when young; leaves linear, 5-20 X c. 1.5 mm, usually sharply acute, more or less angular-terete, erect to almost appressed to the stems.
male flowers with erect pedicels c. 1 mm long, 3-4 mm across at anthesis, with the calyx broadly lobed, with 9-12 anthers in 1 whorl; female flowers with pedicels rarely to 1 mm long, with the calyx distinctly lobed and acute, with 2 rarely 1 carpels each with a long stigma usually recurved onto the almost orbicular ovary.
Fruit usually bilobed in side view, more or less swollen around the seed, c.2 mm long; seeds ovate in side view, c. 1.5 mm long, covered with often undulate transverse ridges from the centre, with a flattened aril wrapped around much of the seed.
Image source: fig. 103b in Jessop J.P. & Toelken H.R. (Ed.) 1986. Flora of South Australia (4th edn).|
Widespread but never common on coastal dunes.
S.Aust.: FR, EP, MU, YP, KI, SE. W.Aust.; ?N.S.W.; Tas.
Flowering time: June — Nov.
SA Distribution Map based
on current data relating to
specimens held in the
State Herbarium of South Australia
The stiffly erect branches of some plants of G. australasicus give particularly male plants a similar appearance to those of G. thesioides which is, however, usually distinguished by decurrent ridges from the leaf bases along the internodes and the absence of uncinate leaf apices.
Not yet available