On some Species of the Genus Urophlyctis *. 
BY 
P. MAGNUS (Berlin). 
With Plates VII and VIII. 
N March 16, 1882, at the meeting of the Botanical 
Section of the ‘ Schlesische Gesellschaft fur vaterlandische 
Cultur/ J. Schroeter described the development of the old 
Physoderma pulposum , Wallr. 1 2 He pointed out that it pro- 
duces large swarm-sporangia which rest superficially upon 
the epidermis of species of Chenopodium , and send forth 
fascicles of rhizoids into the cells. It also develops resting- 
sporangia by the conjugation of two cells of similar form 
inside the living tissue of the host. One of these cells empties 
its contents into the other, which then grows into the resting- 
sporangium. Upon these characters he based the genus 
Urophlyctis in the ‘ Kryptogamen-Flora von Schlesien,’ v. III. 
part I, p. 196 (1886). There he also added a second species 
under the name of U. major (JJ. majus in the text) which 
does not form swarm-sporangia. 
In 1888 I described 3 a third species, parasitic on Carum 
Carvi , which I named Urophlyctis Kriegeriana. It is con- 
1 Read before Section K of the British Association, Liverpool, 1896. 
2 Botanisches Centralblatt, 1882, Vol. xi, pp. 219-221. 
3 Sitzungsberichte der Gesellschaft naturforschender Freunde zu Berlin, p. 100. 
[Annals of Botany, Vol. XI. No. XLI. March, 1897.] 
