ON LABIATA 173 
deciduous ; a few mesospores intermixed, each with a low broad 
pore-cap. 
On Thymus Serpyllum. June— : 
October. Very rare; links, Aber- () C) 
deen (Prof. J. W. H. Trail). (Fig. 
122.) wo) C) 
The presence of the mycelium causes 
the stems to stand more upright; the 
internodes are considerably lengthened, and 
the leaves fewer, so that the affected plants 
can be readily distinguished, as in P. 
Betonicae. The mycelium appears to be Fig. 122. P. caulincola. 
perennial, and the sori to be confined Teleutospores and mesospore. 
almost entirely to the stems, where they 
cause a slight thickening and are more frequent at the nodes than 
elsewhere. 
DISTRIBUTION : Central and North-western Europe. 
45. Puccinia Glechomatis DC. 
P. Glechomatis DC. Encycel. viii. 245. Cooke, Handb. p. 496; Micr. 
Fung. p. 204, pl. 4, f 73—4. Plowr. Ured. p. 214. Sacc. Syll. vii. 
688. Sydow, Monogr. i. 277. Fischer, Ured. Schweiz, p. 327, 
f. 239. 
Teleutospores. Sori hypophyllous or on the petioles, on 
brownish spots or sometimes none, 
3—1 mm. diam., roundish, solitary 
and scattered, or more often subcon- 
fluent into rounded clusters as much 
as 4 mm. diam., on the stem and 
petioles often elongated, pulvinate, 
at first yellowish, then chestnut, and 
at last blackish; spores ellipsoid or 
oblong, with an acute or rounded 
horn-like process (8-12 high) which 
is often obliquely placed and falls off on germination, faintly 
constricted, rounded below, smooth, pale and clear-brown, 
30—48 x 15—24 u; pedicels hyaline, persistent, as much as 
75 long; an occasional mesospore is found. 
Cj > 
Fig. 123. P. Glechomatis. 
Teleutospores and mesospore. 
