26 
EXOSPOUE^. 
[CERATIOMYXA, 
The sporophores are subject to much variation in form, and 
may all be either white or pinkish -yellow. 
a. genuina : branches of sporophores short, free. 
IB. flexuosa: sporophores consisting of a loose flexuose system 
of slender white threads, prof usely branching but not anastomosing, 
and averaging about "02 mm. in diameter, increasing to 0'5 mm. 
at the base, the ultimate branchlets somewhat clavate. In other 
characters this corresponds with the type. — Geratium filiforme 
Berk. & Br., in Journ. Linn. Soc, xiv., p. 97. 
y. porioides : differs from the type only in the dense ai'rangement 
of the sporophores. As intermediate forms occur which unite it 
with the type, I cannot consider it specifically distinct. Super- 
ficially it suggests the appearance of Polyporus vulgaris, though 
much more minute. — Geratium porioides Alb.& Schw.,Consp. Fung., 
p. 359 ; Fr., Syst. Myc, iii., p. 295 ; Fam. & Wor., in Mem. Acad. 
Imp. Petersb., Ser. 7, xx., p. 5; Zopf, Pilzthiere, pp. 64, 174. 
Plate I., A. — Fig. a. var. genuina : sporophores, x 20 (England) ; b. 
spores of the same, x 600 ; c. sporophores of a form approaching var. 
jjorioides, x 20 (England) ; d. var. flexuosa : sporophores, x 20 (Borneo) ; 
e. clavate end of sporophore of the same (all the spores but one have 
fallen from their stalks), x 280. 
Hal). Plasmodium in rotten wood, fruiting on the outside. — a. Lyme 
Eegis, Dorset (L:B.M.l) ; Iowa (L:B.M.l). a. and ^. Borneo (L:B.M.l). 
y. Carlsruhe (Strassb. Herb.) ; Upsala (L:B.M.l) ; Iowa (B.M. 1026). 
Subclass II.— ENDOSPORE^. Spores developed within the 
sporangia. 
Cohort l.—AMA UBOSPORALES. Capillitium always present. 
Spores violet or violet-brown, but pale ferruginous in a few 
species of Stemonitis and Gomatricha. 
Subcohort I. — GALGARINEjE. Deposits of lime in minute 
granules, innate in the sporangium-wall or compacted in the 
knots of the capillitium or in the stalk, or in crystals over the 
sporangium-wall. 
Order I. — Physarace^. Deposits of lime in minute granules, 
more or less aggregated, not in crystals (except partially in 
Ghondrioderma Trevelyani), innate in the sporangium- wall, and 
in vesicular expansions of the capillitium ( = lime knots), except 
in Ghondrioderma and Trichamphora, where there are no lime 
knots, and in Diachoia, in which the lime is confined to the stalk 
and columella. Sporangia simple except in Fuligo, where they 
are combined into an sethalium. 
