268 BOTANICAL GAZETTE [OCTOBER 
surface having a botryoidal appearance especially on media 1 and 
2; reverse color ochraceous; medium colored reddish brown. 
Hyphae much branched, septate, hyaline, 4-5 u broad. Comnidio- 
phores upright, o.1-o.3mm. long, septate; swollen end sub- 
globular, 16-23 » in diameter. Conidial fructification irregularly 
globular, loose, dark green to 
black, 75-125 » in diameter. 
Basidia once branched, pri- 
mary branches club-shaped, 
about 5p long; secondary 
branches ninepin form, 7 # 
long. Conidia in long chains, 
globular, 2.5-3 4» in diame- 
ter.—Fig. 8, B. : 
PENICILLIUM BICOLO 
Fries. —Mycelium at first 
white, center becomes glau- 
cous with white border, later 
develops a sulphur yellow 
outer zone which continues 
to form in the new growth, 
giving slight zonation, the 
whole finally changes through 
avellaneous to brown when 
old; yellow develops more 
brilliantly on ammonium 

Fic. 7.—Pachybasium hamatum ; ‘. . 
(Bonord): @, habit sketch; 6, fruiting tuft nitrate media (nos. 1 and 2); 
showing conidiophores and sterile ends, less yellow and more glaucous 
X8o; d, branching conidiophore with whorl F 
ie s : : um 
of conidiiferous cells, 380; c¢, fruiting on calcium nitrate medi 
hyphae with sterile end, X180; ¢, conidia, (20. 3); reverse color fulvous 
X 380. to ferruginous; medium 
aie colored brown. Hyphae 
nched, many septa, much curved, 1.2-2 broad. Conidiophores 
upright, septate, hyaline, 200-300 » long, 2-3 u broad, branche 
1-3 times at the top to form a compact fructification. Comidial 
ji ructification 100-200 ws long, consisting of branches to the second 
and at times to the third order (tertiary), the last bearing whorls of 
