21 



ADDITIONS TO THE FLORA OF SOUTH AUSTRALIA. 



By J. M. Black. 



[Read May 9, 1912.] 



Plates II. and III. 



The subjoined list is mainly the result of botanical 

 investigations carried out during the past year. The plants 

 marked with an asterisk are aliens which have been found 

 more or less well established in this State. 



Dilleniace^e. — Hibbertia sericea, Benth., var. nova major. 

 Differt a forma typica sepalis et foliis majoribus (illis 

 10-15 mm., his 15-20 mm. longis), necnon numero 

 staminum (20-25) et ovulorum (8 in quoque carpello). 



Near Port Lincoln (H. H. D. Griffith). — A stouter plant 

 than the typical form, and larger in all its parts, the sepals 

 densely villous with long silky hairs. 



Hibbertia acicularis, F. v. M., var. nova sessiliflora. Floribus 

 sessilibus, sepalis glabris, staminibus 4 rarius 6, carpellis 

 pubescentibus 3-4-ovulatis. 



Frequent in the Mount Lofty Ranges and often growing 

 near H. stricta, R. Br. Mentioned in 1862 by Mueller in 

 Plants Indigenous to the Colony of Victoria, i., 17, where, 

 after describing H. acicularis, he wrote : — "On stony moun- 

 tains at Glen Osmond, in the Bugle Ranges, and towards 

 Mount Remarkable (within the colony of South Australia), 

 occurs a closely allied species, of which the fruit is as yet 

 unknown. It differs chiefly in higher erect growth and glab- 

 rous sepals." In Fragmenta, xi., H. acicularis with sessile 

 flowers is mentioned as growing on the Loddon and at Stawell, 

 as well as in South Australia, but the variety was not named 

 by Mueller, as far as I know. This appears to be the only 

 form of the species in South Australia. It is distinguished 

 from H. stricta by its narrow, pungent-pointed leaves, glossy 

 on the upper surface. As forms with both sessile and pedi- 

 cellate flowers are admitted under H. stricta there seems no 

 reason why the definition of H. acicularis should not be 

 widened in the same way. 



Linace^e. — *Linum strictum, L. Maitland, Yorke 

 Peninsula (A. G. Edquist). "Grew on rubbish tip and is 

 spreading over uncultivated land." — Mediterranean region. 



