MILDEWS, RUSTS AND SMUTS 
199 
Our only species is parasitic on various species of Galium ; 
infected plants are dwarfed and blackened. 
Melanotaenium endogenum, De Bary; Plowr., Ured., 
p. 292. 
The spores form expanded black patches or sori, remaining 
covered by the epidermis of the host-plant ; spores globose 
or elliptical, blackish-brown, smooth, size variable, averag¬ 
ing 15—22 X 12—20 p ; promycelium usually having a 
sterile branch at the base, promycelium spores cylindrical, 
often conjugating in pairs and germinating at once. 
Syn. Protomyces galii, Rabenh. 
Protomyces endogenus, Ung. 
On Galium verum and G. mollugo. 
Infected plants are much dwarfed and blackened by the 
parasite. 
ENTORRHIZA, C. Weber 
Mycelium growing within the cells of the host-plant, 
bearing large spores at the tips of lateral branchlets, one or 
several in a cell, wall thick ; result of germination one or 
more slender promycelium tubes, which sometimes bear 
branchlets, promycelium spores slender, curved, very 
minute, borne at the tip of the promycelium and at the tips 
of the branchlets. 
Forming small swellings on the roots of plants. The 
minute, slender, curved promycelium spores are charac¬ 
teristic. 
Entorrhiza aschersoniana, De Toni. 
Spores elliptical or sometimes more or less pointed at one 
end, yellowish, then chestnut-brown, wall crowded with 
rather large warts, 15—17 x —15 (x ; promycelial spores 
very minute. 
Syn. Entorrhiza cypericola, Weber ; Plowr., Ured., p. 299. 
Schinzia aschersoniana, Magnus. 
On the roots of Juncus bufonius, Juncus lamprocarpus, 
J. uliginosus, and /. squarrosus. 
Germany. 
SPHACELOTHECA, De Bary 
Spores produced in the ovary, contained in a receptacle 
formed of hyphae, with a central column or columella, 
the receptacle becoming open at the tip ; spores coloured, 
smooth ; germination by a promycelium producing promy¬ 
celium spores laterally, as in Ustilago. 
Readily known by the presence of an enclosing wall or 
receptacle and a columella formed of hyphae. 
