THE VICTORIAN NATURALIST. 93 



NOTES ON DODON^AS, 

 By Baron Von Mueller, K.C.M.G., M. & Ph. D., F.R.S. 



DODON^A HaNSENIL 



Tall, glabrous, hardly viscid ; leaves comparatively large, on 

 rather conspicuous petioles, chartaceous, broadly and somewhat 

 bluntly lanceolar, but more gradually narrowed into the base 

 than into the apex, subtle- venulated ; racemes when fruiting 

 below the leaves, corymbous, few-flowered or reduced to three or 

 two flowers ; pedicels rather long ; sepals early deciduous ; fruit 

 usually four-celled, its capsular portion hardly as long as broad, 

 its appendages ascendingly divergent, considerably broader than 

 high, rounded-blunt at the upper end, ceasing before the base 

 and before the middle summit of the valves ; dissepiments 

 seceding from the axis, closing permanently the fruitlets ; young 

 seeds longer than broad, almost truncate and also turgescent 

 around the hilum. 



On Stuart's River ; Stephen Johnson, 



Height to 12 feet. Well developed leaves, 2 inches long, 

 always only slightly shining. Flowers yet unknown. Fruit- 

 valves scarcely ^ inch long ; appendages from ^ to nearly Y2. 

 inch broad, venulous. Ripe seeds not yet obtained. 



Among the few species with fruit-dissepiments seceding from 

 the axis this comes nearest to B. platyptera, but the leaves are of 

 larger size, of darker green, of thinner texture and not of con- 

 spicuously glandular punctation ; further, the appendages of the 

 fruit are perceptibly larger, and turn almost diagonally upwards, 

 while those of D. platyptera remain nearly at a level with the 

 vertex of the cells. The flowers and mature seeds may also yet 

 show specific differences. From D. pachyneura our new plant is 

 also distinguished by much larger leaves, with fainter and more 

 divergent venulation, also by the greater extension of the fruit- 

 appendages. The shape of the fruit is much like that of 

 D. macrozyga and D. megazyga, but its dehiscence, as well as the 

 foliage, are very different. The leaves resemble those of D. 

 lanceolata and -O. triqueira. 



I have named this species in memory of Lars Hansen, of 

 Huesbye, an ardent investigator of Schleswig-Holstein's flora 

 through fully four decennia, with whom I was in frequent 

 phytologic communication during the earlier of the fourtier years 

 of this century. . . 



D. lanceolata. 



Unrecorded localities : Tennant's Creek and Finke-River 

 (Kempe), Adelaide-River (Tate), Port Darwin (Holtze). 

 D. petiolaris. 



Mount Oxley (Betche), Grey's Range (W. T. Neal), BuUoo 

 (Mrs. Spencer), Paroo (Mrs. Cotter), Alice's Spring (E. Flint), 

 between the Ashburton- and Gascoyne- Rivers (H. S. King). 



