140 



Puccini a Labiatae. 



Uredospores shortly elliptical, yellowish, finely echinulate, 20-23 

 x 16-18 jji, average 21 x 16 p. 



III. Teleutosori amphigenous, black, blister-like, largely confluent and 

 distorting leaf, long covered by epidermis. 



Teleutospores with a few uredospores intermixed, elongated 

 clavate, chestnut-brown, slightly or not at all constricted at septum, 

 commonly truncate and much thickened at apex, 36-54 x 15-22 /*, 

 average 42 X 18 /u ; upper cell squarish or oblong or club-shaped, 

 apex very much thickened (up to 15 p), sometimes strongly beaked, 

 generally shorter than lower cell, dark chestnut-brown; lower cell 

 tapering towards base, lighter in colour than upper, of a yellowish 

 or golden brown ; pedicel pale yellow, persistent, generally about 

 18-20 p long. 



X. Mesospores chestnut to pallid, rounded or beaked at apex and 

 thickened, somewhat fusiform to elongated elliptical, 25-36 x 

 11-18 p. 



On leaves of Hypoxis glabella B. Br. 



Victoria Ardmona, July, 1893 (Bobinson). Burnley, Buther- 

 glen, &c., July-Oct. 



It differs from P. burchardiae Sacc. in the much smaller uredospores, 

 and decidedly in the teleutospores. which in the latter are generally rounded 

 at the apex or beaked, and distinctly constricted at the septum. 



(Plate Y.,. Fig. 41.) 



LABIATAE. 



64. Puccinia menthae Pers. 



Mentha. 



Persoon, Syn., p. 227 (1801). 

 Sydow, Mon. Ured. I., p. 282 (1902). 

 Sacc. Syll. VIL, p. 617 (1888). 



[O. Spermogonia either arranged in small groups or scattered, honey- 

 coloured.] 



[I. Aecidia hypophyllous, or frequently on stems which are much'swollen, 

 more rarely on purplish-red spots on leaves, seldom scattered ; 

 pseudoperidia immersed, flat, opening irregularly and margin 

 scarcely or irregularly torn. 



Aecidiospores subglobose, ellipsoid or polygonal, coarsely granular, 

 pale yellowish, 24-40 x 17-28 p.] 



II. Uredosori hypophyllous, small, seated on pale spots, roundish or 



elliptical, scattered or aggregated, soon pulverulent and confluent, 

 girt by the ruptured epidermis, cinnamon-brown. 



Uredospores subglobose, ellipsoid or obovate, echinulate, pale- 

 brown, generally three equatorial pores, 20-30 X 16-19 p.. 



III. Teleutosori similar, but blackish-brown in colour. 



Teleutospores at first intermixed with uredospores, ellipsoid to 

 ovate, rounded at both ends, apical papilla pale or hyaline, broadly 

 expanded, hardly constricted at septum, finely warted, golden to 

 chestnut-brown, 24-32 x 19-22 p, but commonly 24-25 x 

 19-20 p ; pedicel hyaline, slender, generally surpassing length of 

 spore, up to 40 p. 



