Puccinia Rutaceae. 181 



On stems, leaf -stalks and leaves of Pelargonium australe Jacq. 



Victoria 1892. II., III. (Morrison). Phillip Island, Jan., 1900, 

 II., III. Murramurrangbong Ranges, Dec., 1903., I., II., 

 III. (Robinson). 



Tasmania Devonport, Jan., 1906 (Robinson). 



The only locality where aecidia were found was the Murrarnurangbong 

 Ranges. 



It differs from P. geranii Corda, to which this species was referred by 

 ooke in Grevillea, XXI., p. 39, in the uredospores being nearly twice a* 

 large, and in the much longer and broader teleutospores. 



There are two species of Puccinia already recorded upon the genus 

 Pelargonium from S. Africa, viz., P pelargonii (Thuem.) Syd., and P. 

 granularis Kalch. and Cooke. 



In P. pelargonii the aecidia are hypophyllous, and not amphigenous, and 

 tho teleutospores are rather shorter and narrower. In P. granularis there 

 are no aecidia. 



(Plate XII., Fig. 102 ; Plate F., Fig. 29.) 



RUTACEAE. 



Boronia. 



115. Puccinia boroniae P. Henn. 



Hennings, Hedw. XLIL, p. (73) (1903). 

 Sydow, Mon. Ured. I., p. 891 (1904). 

 Sacc. Syll. XVII., p 351 (1905). 



III. Teleutosori on branches, erumpent, pulvinate, tuberculate, dark 

 cinnamon, compact, confluent lengthwise up to 2 cm. long, sur- 

 rounded at base by the ruptured epidermis. 



Teleutospores ellipsoid to ovate, oblong, brown, smooth, rounded or 

 bluntly pointed at apex and slightly thickened (up to 5 ft), gen- 

 erally rounded at base, 28-40 x 16-21 /u, average 35 x 20 /x, 

 occasionally 3-celled and elongated, 52 x 25 /* ; pedicel hyaline to 

 yellowish, persistent, up to 120 p long. 



X. Mesospores common, similarly coloured to teleutospores, ellipsoid to 

 obovoid, rounded or bluntly pointed at apex and slightly thickened, 

 30-34 x 17-18 p. 

 On Boronia spinescens Benth. 



West Australia Avon, Oct., 1903 (Diels). 



A very interesting Leptopuccinia which projects from the cortex of the 

 branches in thick, often confluent pustules, and partially surrounds them. 



A specimen was kindly forwarded by Hennings, and the mesospores were 

 observed which are not given in the original description. The size of the 

 teleutospores, as given by Hennings, is 20-32 x 15-18 /x, by Sydow. 22-35 

 x 16-19 ^u, and I have made the average 35 x 20 ^, my measurements 

 being corroborated by those in the photographs, which are also about 

 35 x 20 f.i. 



(Plate XIII., Fig. 107.) 



OTTC&. 



116. Puccinia correae Me Alp. 



McAlpine, Proc. Roy. Soc. Viet. VII., N.S., p. 215 (1894). 

 Sydow, Mon. Ured. I., p. 462 (1903). 

 Sacc. Syll. XIV., p. 297 (1899). 



III. Teleutosori hypophyllous, cushion-shaped, circular or interruptedly 

 circular, dirty brown, scattered, soon naked. 



