198 



Aecidium Rubiaceae, Leguminosae. 



RUBIACEAE. 



Canthium. 



138. Aecidium plectroniae Cooke. 



Cooke, Grev. X., p. 124 (1882). 



Bailey, Queensland Agr. Journ. IV., p. 284 (1899). 



Sacc. Syll. VII., p. 795 (1888). 



0. Spermogonia on upper surface of same spots which bear the aecidif 



sometimes accompanied by one or a few aecidia. 



1. Aecidia hypophyllous, rotund, in small clusters on orbicular dis- 



coloured spots ; pseudoperidia somewhat prominent, whitish, mar- 

 gins sub-entire ; peridial cells ovate to somewhat quadrate, 

 punctate all over, and with striate margin. 



Aecidiospores yellow, finely echinulate, sub-globose to ellipsoid 

 or polygonal, 25-26 x 19-20 /*, or 22-28 p diam. 



On leaves of Canthium coprosmoides F. v. M. 



Queensland Endeavour River (Roth) (Bailey, 31 - 22 ). 



The host-plant is sometimes placed under the genus Plectronia. 



This species was first found on Canthium (Plectronia) guenzii Sond., 

 from Natal, and the spores were undescribed, but I have been able to 

 redescribs it from specimens kindly sent from Queensland by Bailey. 



LEGUMINOSAE. 



Be 

 139. Aecidium eburneum McAlp. 



McAlpine, Proc. Roy. Soc. Vic. VII., N.S., p. 218 (1895). 



P. Hennings, Hedw. XL., p. 352 (1901). 



Sacc. Syll. XIV, p. 375 (1899). 



A. bossiaeae P. Hennings, Hedw. XL., p. 352 (1901). 



I. Aecidia mostly hypophyllous or on stems and legumes, scattered or ii 

 dense clusters, bright orange, average J mm. diam.; pseudoperidia 

 cup-shaped, becoming ivory-coloured then brownish, with reflected 

 finely toothed margin ; peridial cells polygonal, reticulated, 24-31 

 long. 



Aecidiospores ellipsoid, bright orange, very finely echinulate, 

 18-28 x 12-17 fi. 



On Bossiaea cinerea R. Br., stems, leaves, flower-stalks, calyx, ant 

 legumes. 



Victoria Near Melbourne, Sept.-Nov. (Barnard, Robinson, &c.). 

 Tasmania Bellerive swamp (Rodway !), and Dec., 1905. 



On leaves of Bossiaea linophylla R. Br. 



West Australia King George's Sound, July, 1901 (Pritzel). 

 On fruit of Bossiaea rhombifolia Sieber and B. microphylla Sm. 



New South Wales Richmond, Nov., 1896, and Falconbridge, 

 Oct., 1904 (Maiden). 



On fruit of Bossiaea heterophylla Vent. 



New South Wales, Sep., 1896 (Maiden). 



I have revised the description of A. eburneum from fresh specimens, and 



have no doubt but it is the same as Hennings' species, a specimen of which 



