16 BULLETIN 1262, U. S. DEPARTMENT OF AGRICULTURE. 
timber in a building for 44 years and subsequent storage in the labo- 
ratory for over 7 years. Complete records on Polyporus amarus in 
Libocedrus decurrens showed that the fungus remained alive up to 
about. eight months. Cultures made from the infected wood one 
month and eight months later showed no growth. Cultures of this 
fungus develop slowly when fragments are taken from material not 
freshly cut from the tree or log. “Tn some cases 20 to 25 days elapsed 
before the growth appeared on 1 the agar slants or the inoculum. 
The fungi recorded in the “ Live” column are still under observa- 
tion, and in no way can these results be taken as the hmits of vitality 
of the different fungi. The figures in the “ Dead” column indicate 
only that the funous did not revive when cultured. Just when the 
ability to revive was lost has not been determined. 
TABLE 2. 
in the air-dry conditions of a room. 
[Date when last cultured, January, 1925, ] 
Length of time in storage, air-dry 
condition. 
Fungus. Host. Tice: Dead. 
Years. | Months. | Years. | Months. 
@eratostomellaispes se. IPInuspOnderosas= a= eee 3 QO. |e ee ae 
ID oye oer 2 eR SOE ee SI 8 PAnusistrobus__ 2423s. ssa ere 3 0: | 2 eet see ee 
1D Yo et a UA le ize ees Ore Southern yellow pine_______-____- 7 On) = oe 2 ee eee 
Echinodontium tinctorium_-____- Tsuga heterophylla____________- 5 CLE NE 
HGnmieS ARMOSUS. 2.22 - oe COE ee aes ee nee a ee | ee | Oe See 5 0 
Fomes applanatus_______________ Populus trichocarpas= | es 1 5 2 4 
WOMeES TESTIS Se eS Acer rubrum: 452 bere 2 eer 1 5)"] 43 ee ee 
TEV i, = ae ce SW OSs lara Resi avis POpUlusSiremUlordeS eae eee re eee | eee 10 0 
Ome AnICISm tee see ee ee See Pseudotsuga taxifolia____________ 1 O22 EES ee a 
Homes pinicolasss see see eee ee Tsuga heterophylla__-____.--___- 1 Ay os nee | 
Trametes carnea-2 2 2h Picee Canadensis! 2st eee es 2 92. _ 2S 
(0 eo MR Oe Ee Le ee 2a GOI 2. peep. pa ae ee 2 Fiijt- ar oe ae eee 
Ganodermia tsugae_______________ ARS PAHCANAGONSIS= 2 ee ety eee | See ee 6 1 3 
Lentinus Jepideus_~=__-----.--2) Southern yellow pine:? {ebt 9 Ys | aheas Sener ise 2 4 
Menzites *Sepiarias ia JAN Oe Veo es lise lop kee OE ee rey eee 2 (Ap eet: ate eee oor 
Dorit 2). eee a Pees Picea canadensis’ -_2__b2 22222 2 Guise ieee 
TD) OF is Ta es, ee | ae Oulsst 22 eda eee 6 Qi) yace ee 2 eee 
ID Obes a ee ee | ee C6 Kee Mh eS ein 6 3 lo eS 
Evohets adiposas.222 4-2 EES ued Tiligi americana). el eee es Fk Eh 1 S (SNe AE eee 
PRs ae AS Se TARTS AS Abies Sane pos eee es PeRRIES ae 6 3 
Pholiota SD oe ee een sO ee nomen eee ena Se ae AN 6 OG Pe ea ihe aaa 
Polyporus adustus..+_2.-_2_2222- N wah: Sylvaticacuen-<-). bass. 1 8; ib une ssi Laces 
Poly porlistamaruS.) 2 eee ese s ibocedrus decurréns= 2225. es |a- nee ples eae 8 
Polyporus anceps__ 222-222 Picea canadensigs) ita. se syen 2 (ape tae SY uP SSE 
DD) Oe ceo eee ee PINUS; PONGCLOSA =e ee 3 5 ee ee 
Polyporus schweinitzii___________ Pseudotsuga taxifolia___________- 1 OF Se Rass | seer ee, 
Polyporus stipticus___..._...--.- Pinus. ponderosa... ----------.--- 2 i ee ee ee eS 
Polyporus sulphureus--—______-_- QUCI GUSTS Deane Serene ere eee 1 Fe pk emee lebe 
DOS BS eet Bie yy Poe Quercustrulbra tetas Babs tee aes 0 ee Seek 2) Pad bey 10 0 
Polystictus versicolor________-__- Alnus oregona 27... ee 2 53 PE OE Sl eas 
Polystictus*Hirsitusy >... eee |e ee GO3 Shc te ER PURAA RRS A 2 6 
Trametes pini arix, laricin ah tel | re 1 5 
1B yo yrange atte (eae alo PIGES CAL AOCHSISe en ee tee 2 Ole tote so see eee 
ote fer te Pinus'montiGola: 19.349 ts ees Tl Pes, ee 5 0 
Do- “8, #2. | suga neterophvilasress 2. 2elee) cee ee a eee vi 2 
Trametes serialis Q a fatto Pseudotsuga taxifolia__.____- 7 BE: ERE” Ce 
Fusarium negundi (red stain)____] Acer negundo_____-_._._____ 1 6 
IBTOWMYCIIDICHNTOUl.-=-- one Thuja plicstave: ees 1 6 
Do. pee See eee eae PMN Vb: occidentalis___._________- 1 6 
Brown pocket ape ee Vee Sequoia sempervirens. ________-- 5 0 
In general, the results at this time show that certain fungi in wood 
can remain alive though dormant for long periods under the air-dry 
conditions of a room and are capable of reviving and producing new 
growth when suflicient moisture is added. 
Length of time certain fungi remain alive but inactive in wood stored ~ 
