Flora of Australia. 79 



Herbarium, being unaware of the intermediate forms referred 

 by Bentliani and Mueller to this species or of those since obtained. 

 Neither Bentliam nor Mueller considered these forms to be 

 separable as a distinct and fairly constant variety, in which 

 opinion T must emphatically concur, and desire to point out the 

 danger of establishing a new species on a couple of odd forms 

 taken from another Herbarium. 



Eriostkmox (Piii<:n.\LiuM) gibbosus, Luelini. (Rutaceae). Norse- 

 man, W.A., J. I). Batt, 1S97. 



This plant was exhibited before the Field Naturalists in 1897 

 (vol. xiv., p. 18), but no description of it has been published. 

 The specimens are very fragmentary, but the leaves are like 

 those of E. difformis, and the flowers like those of C. obovalis. 

 The filaments are, however, not ciliate, and the anthers not apicu- 

 late, and there is no reason to suppose that the specimens form 

 a hybrid between these two species. 



The younger branches are minutely pubescent, and the leaves 

 have very prominent glands. The calyx lobes are very short, 

 obtuse, and very slightly ciliate. The petals are glabrous and 

 imbricate. Of the ten stamens those opposite the petals are 

 somewhat longer than the others. The pale glabrous filaments 

 bear reddish spots, and the gynaeceum is glabrous. 



Gkococcl'S pusillus, J. Drumm. et Harv. (Cruciferae). 



This curious plant was suggested by Bentliam as being possibly 

 a form of Blennodia with dimorphic flowers and geophilous fruits. 

 This suggestion was revived by Mueller (Vict. Nat., 1892, p. 

 137), who pointed out that the foliage I'esembled that of Sisym- 

 brium cardaminoides, F. v. M., and that a Brazilian Cardamine 

 sometimes exhibits a similar peculiarity. Geococcus pusillus 

 might possiljly be a geophilous form of Sisymbrim cardaminoides, 

 produced as the result of continued grazing or cropping. 

 8ome specimens of Geococcus in the Herbarium have the 

 normal flowers of (Sisymbrium, and show great variation in the 

 shape and length of the fruit. The shortened, and some- 

 times almost sagittate, fruit of Geococcus is obviously developed 



