58 THR VICTORIAN NATURALIST. 



(along with the subsequent Didiscus albiflorus) in the genus 

 Trachymene already, further as the designation Didiscus has 

 been in extensive horticultural use for fully sixty years, and 

 therefore could not well be abolished now. Sprengel's name, 

 Fischera, given as far back as 1813, is neither available, as a 

 synchronous genus became indisputably admitted among 

 asclepiadous plants. 



Didiscus elachocarpus. 



Annual, dwarf, erect, beset with spreading glandule-bearing 

 hairlets ; leaves few, minute, trifid ; involucral bracts broadly 

 linear, acute, about as long as the pedicels ; fruitlets extremely 

 small, dark-brown, almost obovate, turgid, glabrous, but equally 

 tubercular-wrinkled on both sides. 



Between the Murchison-River and Sharks-Bay; F. v. M. 



Whole plant above ground about 2 inches high, according to 

 an only specimen secured ; root almost as long, simple, downward 

 capillary. Leaves including the petiole only % to ]/i inch long. 

 Flowers not obtained. Styles extremely minute, with capitellar 

 stigmas. Fruits on pedicels of about j^-inch length. Fruitlets 

 much shorter than the pedicels, somewhat demidiate, the ridglets 

 concealed. 



A remarkable plantler, similar to minute forms of D. pusilhts, 

 but with fruits very much smaller than in any other congener, yet 

 bearing well developed albument, hence neither deformed nor of 

 abnormal minuteness, as might be thought at first sight. The 

 smallness of the fruitlets brings our new plant in some contact 

 with Hydrocotyle, especially as //. corynophora might be trans- 

 ferable to Didiscus. 



GOODENIA FORESTII. 



Herbaceous, rather dwarf, spreadingly short-pubescent with or 

 without glandules, sometimes glabrescent ; leaves of thin texture, 

 ovate or lanceolar, towards the base cuneate, often grossly in- 

 dented, particularly towards the middle, of a dark green on both 

 sides ; pedicels solitary, axillary or by diminution of floral leaves 

 terminal, devoid of bracteoles, jointed at the summit, the lower 

 much longer than the flowers ; calyx small, divided to near the 

 base into lanceolate-linear segments ; corolla velutinous-pubes- 

 cent outside, its lobes all appendiculated, the two upper unilater- 

 ally amply scarious, downward at the edge barbellate ; anthers 

 apiculate ; style rather short and stout, as well as the stigma- 

 cover imperfectly beset with hairlets ; fruit small, roundish, hardly 

 surpassed by the calyx-lobes, much compressed, outside beset 

 with hairlets ; dissepiment hardly half penetrating the fruit ; seeds 

 almost as wide as the cavity, dark brown, their surrounding mem- 

 brane about as broad as the nucleus, darkish, tender. 



Yule-, Fortescue-, and Sherlock-Rivers 3 Hon. Sir John Forrest. 



Nearly allied to G. melanoptera, differs in more copious indument, 



