65 



Definitions of Rare or hitherto Undescribed Australian Plants, 

 cJtiefiy collected within the boundaries of the Colony of Victoria ; by 

 Dr. Ferdinand Mueller, Government Botanist for the Colony 



of Victoria. 



{Continued from p, 46.) 



XVI. HALORAGEiE. 



72. Pelonastes tillceacea,'^ F.MuelL; leaves short, somewhat blunt, 

 as well as the sepals, entire ; flowers all sessile, the male ones witli four 

 stamens ; carpels minutely and scantily verrucose, 



Hab. In wet localities of the Emu Flat, near St. Vincent's Gulf. 



73. Haloragis acutangula (Sect. Cercodia), F. Muell.; stem peren- 

 nial, erect, angular, branched ; leaves scattered or sometimes opposite, 

 lanceolate-linear, flat, beyond the middle furnished with linear-subulate 

 remote seiTaturae, on the margin denticulate-aspcrous, on both sides 

 glabrous, but, like the stem, slightly asperous; floral leaves entire; 

 flowers hermaphrodite, with eight stamens and four stigmas, generally 

 sessile in the axils of the upper leaves, solitary or glomerate, thus 

 forming a long foliate spike ; lacinise of the calyx cordate-deltoid, acu- 

 minate, of less than half the length of the glabrous petals; fruit large, 



acute-quadrangular, glabrous and smooth, with four cells, the angles 

 keeled. 



Hab. On ridges about Port Lincoln, C, Wilhelmi. 

 It agrees best in its characters with ZT. racemosa (Labill. Nov. Hoi. 

 i. p. 100, t. 128). 



XVII. LYTHRACEiE. 



Amma 



annual, glabrous ; stem 



erect, simple or branched, square; leaves ovate- or linear-oblong, 

 blunt, with a dilated base clasping ; cymes axillary, on very short pe- 

 duncles, or rarely the flowers solitary in the axils; calyces cup-shaped, 

 with four very short acute teeth and four indistinct ones alternating 

 with them ; petals four, nearly lanceolate, flavescent, very soon falling 

 oflf; stamens four; capsule globose, extremely thin, one-celled. 



Hab. On boggy places, periodically under water, along the Rivers 

 ^lurray, Darling, and Murrumbidgee, 



* MyriopliyUum iniegrifoUum, Hook, fil.. Flora of Tasmania.— Ed. 

 t Apparently an Asiatic spet'ius, though not A, mvfiijlora, — Ed. 



VOL. VIII. 



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