226 BOTANICAL GAZETTE [SEPTEMBER 
portion of blematogen; at extreme right may be seen a part of hymenophore 
primordium with loose ground tissue below; 56. 
Fic. 6.—Left side of median section about the time when hymenophore 
primordium is first differentiated; tangled, compact mass of hyphae of very 
young hymenophore near center, with looser ground tissue surrounding it; 
133. 
Fic. 7 powan savant at about _ same ase of differentiation as fig. 4; 
two compact, ; from summit blemato- 
gen hyphae are curving cobnad and downward: 
Phen 8.. Raucoug ee comical stem flea ieee hymenophore 
pri ither cid 
as a more Rae central area; loose ground tissue clothes stem, ‘and outside 
is deep-stained blematogen; 18. 
Fic. 9.—Tangential section of same fruit body; hymenophore primordium 
appears as dark horizontal area, with uneven lower surface; i r dar 
region just below is oblique section of stem surface; 18 
Fic. 10.—Median section, sim ithge whit palisade het formed gill 
avy Mbprars Ae & hence a almost closed because of epinastic growth of 
-pileus ; below, the looser ground tissue; 133. 
Fic. 11. a Veupeitial section of same fruit body; ground tissue is tearing 
away from hymenophore to form gill cavity; above hymenophore is crescent- 
shaped pileus, with the much thicker blematogen outside; X33- 
_ fis. 12 -Higher mga ape of section near preceding to show blunt 
low; above is dense hymen- 
EE rag 
Fic. 13.—Blematogen has broken into scales; stem and pileus are well 
organized; b , ae | r ee 
of ground tissue traversing it; dark line between pileus and hymenophore : 
indicates area of more rapid growth; X13. aS 
. piace seis nce pe caige ecotssi et 13, and showing same 
features enlarged; X32. _ a 
bt I i ~~ Pangential section, showing compact iyeuigins él no be - 
nt hae not 
t oi ay +O 
oo become even in ey 
o A. gr ee pe tare -Serial tang, eae tive nee : 
hs 16 fynopore uneven an levity is weak _ 
ground tissue still attached to fips “id 
