4 AUSTRALIAN PLANTS. 



into the base ; pedicels at length remote, spreading ; petals shorter 

 than the calyx ; style longer than the diameter of the spreading 

 siliqua. 



Hab. On moist sandy places on the Murray Eiver, in South Aus- 

 tralia, 



Not unlike 0. sarmentosa^ Forst. 



7. Sisymbrium (§ Arabidopsis) cardaminoides^ F. Muell. j annual, dif- 

 fuse, somewhat hairy ; leaves lanceolate, entire or on both sides with 

 one or two teeth ; pedicels expanded, hardly half as long as the siliqua ; 

 nerve of the valves thin ; petals white ; filaments linear-subulate ; style 

 short ; stigma indistinctly bilobed. 



Hab. On sand-ridges near the entrance of the Murray Eiver, 



8. Sisymbrium trisedum^ F. Muell. ; suffruticose, glabrous, erect; 

 leaves glaucous, divided into tlu'ee linear, filiform segments ; pedicels 

 thread-like, three or four times shorter than the siliqua, slightly spread- 

 ing; style very short or wanting ; stigma dilated. 



Hab. In the desert on the Murray Kiver, on Spencer's and St. Vin- 

 cent's Gulf, and near Lake Torrens. . 



9. Capsella (§ Hutchinsia) antipoda^^ F. Muell. ; annual; stems sim- 

 ple or little branched, ascending, foliate ; leaves all petiolate, pinnately 

 parted or entire, glabrous ; lateral lobes two or three on each side, 

 ovate or oblong, the terminal one larger ; petals white, ovate, unguicu- 

 late; calyx for some time persistent, half as long as the coroUa; siKcles 

 elliptical, shorter than the pedicels, 4-12-seeded; stigma subsessile. 



Hab. In the Elack Forest, and on the summit of Mount Alexander. 

 Of great affinity with HutcJiinsia petrcsa. 



10. Lepidium (§ Dileptium) amhigtmm, F. Muell. ; perennial ; stem up- 

 right, branched, somewhat scabrous ; upper leaves linear, 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, atte- 

 nuated at the apex, with a very short emarginature, which includes the 

 subsessile stigma. 



Hab. On the Murray Eiver in South Australia. Allied to Lepidium 

 hyssopifolium ; silicles two lines long. 



11. Lepidium (§ Lepia) monoplocoideSy F. Muell.; perennial; stems 

 upright or ascending, branched, scabrous from small papulae; leaves 



* Probably H, petraa^ which is found both in South-eastern Australia and in 

 Tasmania, or H, Australia, ILf. Fl. Tasman. 



