
44 BOTANICAL GAZETTE ' [JANUARY 
TABLE I. 
PERCENTAGE OF GERMINATION. 
In all cases the cultures were examined 15 hours after the spores were sown, them 
in most cases 24 and 48 hours later. When germination was not complete at the end 
of 15 hours there was very my germination. The results as given, however, are for 
the second or third observation 






















Culture media 
~— Wares Bean Standard | Standard Sug: 
decoction jnutr.saltsol.| inorg. sol, | solution 
Aspergillus flavus . .. . ot 100 100 75 75 
Sterigmatocystis nigra . fe) 100 100 3-75 20+ 
Penic ucu 100 100 20-50 Sie 
(Edocephalum albidum toot 100 100 50-75 100 
Botrytis vulgaris ot 100 100 100 100 100 
Mo ena. . 75 100 100 100 100 
Circinella umbellata o 100 fe) 5 i 
Mucor s as te ? 100 ie ahs 25 
cor racemosus : ?§ 100 100— ?§ 80 
Mucor spino fo) 100 oo* fe} oe 
Phycomyces of 100 50-100 fC) 2-10 
Chaetocladium Jonesii o 100 ) 80 
Coprinus fimetarius . oO 5-I0 o) ° ° 
Coprinus co ) ) fc) fo) oO 
oprinus micaceus fo) 100 oO fe) 0 
Boletus sp. nee ae fc) ) ) fe) sd 
summer. I os 
Ustilago perennans ans { pikes 50-70 100 ‘ 100f 
summer . 2-10 an Ais: ee 9 
Ustilago avenae { autumn .:| 50 root 
Ustilago striiformis . . . . ) as mre ae 25 
ocystis anemones : ) On oO - 
Uredo (P. graminis on wheat) 20 ee aay fs) 
Uredo (P. graminis on rye a) 2 deos 20 iy wis 50-100 
esac caryophillinus . . toot 7S Pen fel roof 
Exoascus s ; os *e ii et ac 
Galera primulina ‘ nae Ber 75 din xs 75+ 
* Abnormal. t Nearly. ** Budding. 
t Usually. § Small. . *** Some budding. 
confirm this view. With the exception of Coprinus micaceus, - 
most of the Hymenomycetes employed fail to germinate readily 
on bean decoction. Brefeld and others have determined that a 
large number of Coprini, Clavariae, and Tremellineae germinate 
well upon dung decoctions. 
Glycerin, although slow in action, often gives somewhat 
** Ductavx,—: Annales de l'Institut Pasteur 3: 112. —. 


