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104 gösta lindeberg
Table I. The Influence of Thiamin ön the Growth of certain
Lignin-and Cellulose-Decomposing Hymenomycetes.
Speeie.s Incubation time in clays Average clry weight of mycelium in mg
Controls Thiamin
(’.lavaria liijulii Fr....................... 58 0,7 115,4
Clitocybe Alexandre Fr.................. 43 1,0 40,7
cUwipes Fr.......................... 43 0,9 fi 1,5
geotropa Fr......................... 40 5,1 14,5
infiindibuliformis Fr................. 40 1,4 3,7
nebularis Fr......................... 43 1,0 44,9
• odo ra Fr............................ 43 0,3 7,3
Collybia ambusta Fr.................... 19 1,0 110,2
butyracea Fr........................ 42 0,9 10,2
Cortinellus bulbiger (Fr.) Pat........... 43 0,3 7,9
Flammula carbonaria Fr................ 19 1,0 27,«
— penetrans Fr........................ 19 0,5 109,1
Hypholoma capnoides Fr............... 58 1,8 34,0
fasciculare Fr....................... 50 7,4 47,2
— sublateritium Fr..................... 58 1,1 78,0
Lepiota amianthina Fr.................. 42 0,3 38,9
procera Fr.......................... 41 1,8 31,3
Mycena epipterygia Fr.................. 41 0,5 fi,6
galopoda Fr......................... 41 0,5 70,0
polygramma Fr..................... 41 1,2 37,5
rosella Fr........................... 58 0,7 35,2
- viscosa (Secr.) Maire ................ 58 1,4 39,5
- vulgaris Fr.......................... 58 1,3 193,1
Panus stipticus Fr...................... 58 2,0 92,4
Pholiota mutabilis Fr................... 41 2,1 134,3
— squarrosa Fr........................ 42 1,1 33,2
light ön the requirements of the hymenomycetes in respect to vitamins,
the abilitv of the reported fungi to assimilale a synthetic nutrient
solution was tested in the presence as well as in the ahsence of vitamin B,.
The technique applied in this investigation bas heen descrihed
pre-viously (Lindeberg, 1944, p. 40—42). Puré cultures of the fungi were
made bv growing spores in malt extract agar or by the »tissue-culture
method» and using malt extract agar or nutrient solutions as substrates.
In the experiments with thiamin a previously proposed solution, i.e.
solution B (Lindeberg, 1944, p. 42) was used viz. glucose 20 g.,
NH4-t ar t rate 5 g., KH,P04 1 g., MgS04 . 71LO 0,5 g., FeCl3-solu(ion
(Fe-conc. Vboo) 0,5 ml., ZnS04-solution (Zn-conc. Vsoo) ^^ ml- MnCL-solu-
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