20 ON HITHERTO UNRECORDED AUSTRALIAN PLANTS, 



Alhizzia canescens, Mitcliell-R., Carpentaria (E. Palmer). 

 A. 2^fuinosa, Shoalhaven (Baeuerlen). i 



A. monilifera, Port Darwin (Holtze). 



A. grandiflora, Mt. Caromba (Miss E. Thornton). Flowers 

 scented, filaments white towards the base, otherwise crimson or 

 pink. 



A. Lehhek, Thursday-Island, from three collectors. 



This is an apt opportunity for pointing out, that the genus 

 ffansemannia, established 1887 by Schumann in Eugler's Bot. 

 Jahrbuecher, p. 201, must be reduced to ^/^z'ssia. In first instance, 

 from imperfect material, simply pinnate leaves were attributed to 

 that genus by its author, who however has corrected this in a 

 publication of 1889 (T^^ora von Kaiser Wilhelm's Land, p. 103), 

 where the leaves are described as doubly junnate. Not to destroy 

 the dedication, the H. glabra should now be called Alhizzia 

 Hausemanni, the other species, viz., H. mollis and H. hrevijjes 

 simply changing the generic name. In the same manner Affonsea 

 juglandifolia, A. comosa and A. hullata become merely transferred 

 to Inga. The various extent in plurality of pistils within the 

 genus Alhizzia has been demonstrated in 1888 in the 13th decade 

 of the " Iconography of Australian Acacias and cognate Genera." 

 If for the species of Alhizzia bearing flowei'S with more than one 

 pistil, a generic separation is to be maintained, then the name 

 Archidendron would take precedence. 



Hydrocotyle corynophora. 



Erect, annual, glabrous ; stem and branches thinly filiform ; 

 basal leaves small, conspicuously stalked, from orbicular to rhom- 

 boid, slightly and bluntly lobed but only towards the summit ; 

 stem-leaves diminutive, linear, entire ; stipules membranous, 

 broadish, somewhat fringed ; peduncles upwards gradually and 

 conspicuously dilated ; umbels very small ; outer pedicels longer 

 than the flowers ; petals pale ; anthers pale, almost oval ; fruits 

 broader than long; f ruitlets on each side elevated by a semicircular 



