494 
Discocarp. In Ascomycetes: ascocarp in 
which the hymenium lies exposed whilst 
the asci are maturing. Same as apothe- 
cium, cup. 
Discus. Hymenium of a discocarp. Same 
as lamina proligera, lamina sporigera. 
Dissepiment. Same as trama. 
Dorsiventral. Horizontally extended so as 
to have a dorsal and a ventral surface. 
Ectosporous. Having exogenously formed 
spores. See exosporous. Comp. endo- 
sporous. 
Ejaculation of spores. 
of spores. 
Ejeetion (Ausschleuderung) of spores. 
Throwing out with force of endogenously 
formed spores from a sporangium. Same 
as ejaculation of spores. 
Elater. In Myxomycetes: a free capillitium 
thread. 
Encarpium. Trattinick’s term for sporo- 
phore. 
Endogenous. Produced inside another 
body. Comp. exogenous. j 
Endogonidium. Gonidium formed within 
a receptacle (gonidangium). 
Eindophyte. Plant growing inside another 
plant and parasitic uponit or not parasitic. 
Comp. epiphyte. 
Endosporium. Innermost coat of a spore. 
Comp. exosporium, episporium. 
Endosporous. Having endogenously 
formed spores. Comp. exosporous, 
ectosporous. 
Entozoie. Living inside an animal. 
Envelope-apparatus. In Ascomycetes: 
all the parts of the sporocarp except the 
ascus-apparatus which consists of asci 
and the ascogenous cells. 
Epinasty. That state of a growing dorsi- 
ventral organ in which the dorsal surface 
grows more actively than the ventral 
surface. Comp. hyponasty. 
Epiphloeodie. Of Lichens: living upon 
the surface of the periderm of a plant. 
Comp. hypophloeodic. 
Epiphragm. In Nidularieae: delicate 
membrane closing the cup-like sporo- 
phore. 
Epiphyte. Plant growing upon the outside 
of another plant and either not parasitic 
upon it or parasitic. Comp. endo- 
phyte. 
Epiplasm. Same as glycogen-mass. 
Episporium. Outer (second) coat of spore. 
See exosporium. Comp. endosporium. 
Ergotised. Attacked by ergot. 
Excipulum. Outer envelope of a disco- 
carp developed as part of the envelope- 
apparatus. 
Exogenous. Produced -on the outside of 
another body. Comp. endogenous. 
Same as ejection 

EXPLANATION OF TERMS, 
Exosporium. (a) Same as episporium. 
(4) In Peronosporeae: thick coat de- 
veloped from periplasm around the 0o- 
spore. 
Exosporous. Having exogenously formed 
spores. Comp. endosporous. 
Extracellular. Outside of a cell. 
intracellular. 
Extramatrical. Outside of a matrix or 
nidus. Comp. intramatrical. 
Comp. 
Facultative. Occasional, incidental. Comp. 
obligate. 
Facultative parasite. An organism which 
can and normally does go through the 
whole course of its development as a 
saprophyte, but which may also go 
through its development wholly or in 
part as a parasite. Comp. obligate 
parasite, facultative saprophyte. 
Facultative saprophyte. An organism 
which normally goes through the whole 
course of its development as a parasite, 
but which can at certain stages vegetate 
as asaprophyte. Comp. obligate para- 
site, facultative parasite. 
Favus. Disease of the skin caused by 
Achorion Schönleinii, Remak. 
Felted tissue. Same as tela contexta. 
Fertilisation-tube. In Peronosporeae: 
tube put out by the antheridium which 
pierces the oogonium and is the channel 
through which gonoplasm passes from the 
antheridium to the oosphere. 
Fibrillose. Having a finely lined appear- 
ance as if composed of fine fibres. 
Fibrillose mycelium. Same as fibrous 
mycelium. 
Fibrous mycelium. Mycelium in which 
the hyphae form by their union elongated 
branching strands (mycelial strands). 
Same as fibrillose mycelium. Comp. 
filamentous mycelium, membranous 
mycelium. 
Filamentous Fungus (Fadenpilz). 
Growth-form in which the thallus is con- 
stituted by a branched hypha alone, i.e. 
without union with other hyphae. Comp. 
Compound Fungus-body, Sprouting 
Fungus. 
Filamentous mycelium. Mycelium of 
free hyphae which are at most loosely 
interwoven with one another, but without 
forming bodies of definite shape and out- 
line. Same as floccose mycelium. 
Comp. fibrous mycelium, membran- 
ous mycelium. j 
Filamentous sporophore. Same as sim- 
ple sporophore. 
Filamentous thallus (thallus filamen- 
tosus). Same as fruticose thallus. 
Flabelliform. Spread out like a fan. 
Flacherie. Disease of the silkworm due to 
