Australian Plants. 35 
upper leaves lmear, entire or with a tooth at the apex and 
with a broad basis, sessile; flowers furnished with petals; 
silicles of the length of the pedicels, ovate-oblong, attenuated 
at the apex, with a very short emarginature, which includes the 
subsessile stigma. 
On the Murray River in South Australia. Allied to Lepi- 
dium hyssopifolium; silicles 2 lines long. 
5. Lepidium monoplocoides. 
{ Sect. Lepia.) 
Perennial; stems upright or ascending, branched, scabrous 
from small papule; leaves linear, entire, slightly tapering 
into the base; flowers without petals; silicles orbicular, 
acuminate, with a broad keel, a little longer than the flat 
pedicel, their lobules connivent, surpassing in length the style. 
In the Mallee Scrub on the Murray River, towards the 
junction of the Murrumbidgee. 
A rare species, almost intermediate between Lepidium and 
Monoploca. 
6. Monoploca leptopetala. 
Fruticulose; branches numerous, scabrous; leaves’ semi- 
terete; petals lanceolate-linear, long acuminate; silicles 
ovate, of equal length with the pedicel; their lobules at the 
extremity connivent, half as long as the style. 
in the Murray desert not unfrequent. 
7. Stenopetalum sphaerocarpum. 
(Sect. Camelinella. ) 
Glabrous; stems filiform; lower leaves of the stem tripartite, 
their segments and the upper leaves linear, entire; pedicels 
filiform, nodding, longer than the calyx; petals white, exceed- 
ing with its linear curled appendage twice the sepals; silicles 
globose, nerveless, hardly of the length of the pedicel; each 
cell containing from six to eight seeds; funicles shorter than 
the seeds. 
On moist sandy places on the Murray River, at Lyndock 
Valley, Crystal Brook and various places on Spencer’s Gulf. 
BUETTNERIACE. 
8. TLhomasia petalocalyx. 
T. macrocalyx of Schlechtendal, (Linnea xx. p. 633.) not of 
