ON JUNCACEA 239 
On Luzula campestris, L. maxima, L. pilosa. Uredospores, 
May—July ; teleutospores, September—November. (Fig. 184.) 
PipRIgY 
Fig. 184. P. oblongata. Teleutospores (one abnormal) and a mesospore; 
b, uredospores; all on same leaf of L. pilosa. 
The uredospores are said to be always smooth, more or less obovate, 
and often irregular. It is stated by Sydow that they can survive the 
winter. Fischer figures anomalous spores, of both kinds, including three- 
celled and one-celled teleutospores. 
Plowright’s suggestion that this is probably a hetercecious species has, 
so far, received not the slightest confirmation. The greatly thickened 
summit of the teleutospores is very striking ; they are produced in the 
old uredo-sori, especially towards the tip of the leaves, so that in a 
sorus which is producing uredospores a-few young teleutospores may be 
found, and the fully-formed ones are surrounded by the numerous persistent 
uredospore-pedicels. 
It is, no doubt, very heterodox, but I cannot help expressing the 
opinion that P. oblongata is merely an abnormal development of P. obscura, 
On the same leaf of Luzula pilosa, if not in the same sorus; I have 
found almost all the various kinds of spores figured by Fischer under both 
species. Uredo oblongata Grev. Scot. Crypt. Flor. pl. 12, doubtless 
includes this form, but his figure is P. Carvcis. 
DisTRIBUTION: Central and Northern Europe. 
107. Puccinia Scirpi DC. 
Heidium Nymphoidis DC. Flor. fr. ii. 597 and vi. 93. Plowr. Gard. 
Chron. 1895, xviii. 96, 135. 
Puccinia Scirpt DC. Flor. fr. ii, 228, Plowr. Ured. p. 191.  Sace. 
Syll. vii. 659. Sydow, Monogr. i. 688. Trans. Brit. Myc. Soc. 
i. 58. Fischer, Ured. Schweiz, p. 298, f. 218. 
