80 British Uredinee and Ustilaginee. 
abundantly. As the teleutospores are of pretty large size, 
their germination is easily observed. I have found them 
germinate much more freely in summer than in late autumn 
(Plate VII. Fig. 18). 
U. tragopogi (Pers.) (U. veceptaculorum, Fries).—The 
germination was observed by Tulasne,* and by Von Wald- 
heim,t to consist in the protrusion of a promycelium 
through a very marked germ-pore in the epispore. It 
becomes three or four-septate, and pro- 
duces subcylindrical promycelial spores, 
which are rounded, especially at their 
distal ends. These often grow nearly 
parallel to the promycelium, as figured 
by Von Waldheim; sometimes they 
are produced terminally upon branches 
pore Baines wast given off from the segments of the pro- 
nating and promyesiiaispores mycelium. Conjugation often takes 
place between them after they have 
fallen off. In nahrlésung Brefeld ¢{ found them to be abun- 
dantly reproduced by budding, but they were larger, mea- 
suring from 5 to 20u in length, and from 5 to 7u in breadth, 
U. kithneana, Wolff.—The promycelium is three to four- 
septate, the lowermost compartment being the longest 
and empty. It produces numerous promycelial spores in 
whorls at each septum (Plate VII. Fig. 17). In nahrlo- 
sung § they budded very profusely, forming very character- 
istic small yeast-spores, from 3 to 54 long, and from 3 
to su wide. Wolff|| also investigated the germination in 
water. 
U. hypodytes (Schlecht.).—The germination of this plant 
* Tulasne, ‘‘2° Mémoire,” pp. 159-160, t. xii. figs. 34-40. 
t F. von Waldheim, loc. cét., t. xi. figs. 27-37. 
t Brefeld, oc, czt., pp. 81, 82, t. v. figs. 7-11. 
§ Brefeld, doc. cit., pp. 83-88, t. v. figs. 12-20, 
|| Wolff, Bot, Zeitung (1874), pp. 814, 815. 
