i 9 4 



Aecidium Scrophulariaceae. 



Clematis. 



RANUNCULACEAE. 

 130. Caeoma clematidis Thuem. 



Thuemen, Myc. Univ. No. 539. 

 Berkeley, Hook. Journ. VI., p. 205 (1854). 

 Cooke, Handb. Austr. Fung., p. 344 (1892). 

 Sacc. Syll. VII., p. 867 (1888). 

 Uredo clematidis Berk. 



I. Sori hypophyllous, generally on pale-green portions of leaf, solitary or 

 arranged in circular groups, more or less rounded, pulvinate, ruddy- 

 brown at first and bright orange when burst. 



Spores in rows, bright orange, variable in shape, ellipsoid, 

 ovate, oblong or polygonal, epispore hyaline, scolloped, 22-32 x 

 16-20 p. 



On living leaves of Clematis aristata R. Br., and C, microphylla DC. 



Victoria Near Colac, Sept., 1897 (Hill). Phillip Island, Jan., 

 1900. Murramurrangbong Ranges, Dec., 1903 (Robinson). 

 Near Melbourne, Feb. and July, 1904. Frankston, Jan., 1904, 

 Aug., 1904 (Robinson). 



Queensland Bailey ' 5 . 



This species was first described from S. Africa as a Uredo, but it has the 

 spores in chains and is a true Caeoma. Specimens were examined from 

 Thuemen's Myc. Univ. 539 and found to be the same. 



AECIDIUM Pers. 



Several of the aecidia given in Dr. Cooke's Handbook oj Australian 

 Fungi are now referred to their proper Puccinias. A. urticae is accepted 

 as a stage in the life-history of Puccinia caricis, and described in connexion 

 with that form. A. goodeniacearum, A. senecionis and A. violae are placed 

 under their proper Puccinia or Uromyces, and the aecidium on the daisy 

 (A. bellidis) is now found to belong to P. distincta Me Alp., and to have no 

 connexion, as in Britain, with P. obscura on Luzula. The most noteworthy 

 aceidium is that found on a grass (A. danthoniae), and constitutes the second 

 known example. They often cause deformation of the branches known as 

 witches' brooms, and various swellings, and in some instances compound 

 galls are formed up to 5 cm. across (A. englerianum). One species causes 

 thickening and distortion of the leaves in Veronica, and nettle stems are 

 often abnormally swollen from the same cause. 



General Characters. Pseudoperidia cup-shaped or urn-shaped, rarely 

 cylindrical, with margin often crenate or laciniate and revolute. 



Spores, globose or angular, commonly orange yellow, growing in chains. 



Aecidium-forms, 15. 



SCROPHULARIACEAE. 



Veronica* 



131. Aecidium disciforme Me Alp. 



O. Spermogonia on under surface of upper and younger leaves, honey- 

 coloured, flat, numerous, minute. 



Spermatia hyaline, elliptical, 5-6 p. long. 



