CONTRIBUTIONS TO THE FLORA OF AUSTRALIA. 197 
verticillaris, which is a synonym of T. Sieberiana, but 
apparently the correction is hitherto unpublished. 
Zygophyllum ovatum, Ewart and White, n. sp. (Zygo- 
phyllez). 
Herbaceous with branching stems, and height of about 
11 cms. Petiole flattened, and two apical leaflets which 
are cuneate,with usually an indented mucronatetip. Length 
of leaflets about 10 mm. and of the petiole about 5 mm. 
Flowers four-merous, hypogynous, very small and incon- 
spicuous. Calyx green, sepals glabrous inside, lanceolar, 
pointed, and 2 mm. long, roughened on the outer surface, 
free. Petals four, white, stalked, about half the length of 
the sepals, free, entire. Stamens eight, free, inferior, about 
as long as the petals, with broad winged bases. Anthers 
two celled, versatile. Carpels four, angular, with a very 
short appendage at the tip of each. Fruit, a capsule with 
four chambers, dehiscing loculicidally with two seeds in 
each chamber. The fruit is four angled and rounded at the 
top, being somewhat wider at the top than at the base. 
Ovate or obovate in shape with a blistered surface and 
divergent veins. Calyx persistent, reflexed. Watheroo 
rabbit fence, W.A.; M. Koch, 1905, No. 1674. 
From Z. todocarpum it differs in the small, four-merous 
flowers, and in the presence of two seeds in each cell. It 
is nearest Z. ammophilum, but the fruits have rounded 
instead of truncate tops, and the stamens are winged at 
the base as in Z. todocarpum. 
INTRODUCED PLANTS. 
Datura metel, L., (Solanaceze). Loddon River, Victoria, 
A. Simon, 1896. Probably only a garden escape. 
Galenia secunda, Sond., (Ficoidez). 
This South African weed introduced with ballast is now 
well established on the shores of Port Phillip Bay from 
