Table 2. -Phenological observations for conifers In Northern Idaho and west of the Continental Divide in Montana, 1928 ■ 1937. 



Species 



Rark 

 Darn 



slips 



Chnntc 



st3rt 



Buds 

 burst 



Pollen 

 starts 



Pnllpn 



ends 



Chnntc 



end 



Ddl H 



Sticks 



Winter 

 buds 

 formed 



Cones 



full 

 lull 



size 



Lones 

 open 



Abies grandis 























Average date 



Apr. 25 



May 18 



May 25 



June 4 



June 20 



Aug. 3 



Aug. 27 



Aug. 14 



Aug. 5 



Sep. 9 



Earliest date 



iviar. li 



Anr 1 Q 



Apr. 1 y 



Apr. 5 



May 1 



May ZU 



June 9 



lull, 1 



July 1 D 



June 1 6 



li,l>, 7 



July / 



Aug. 30 



Ldlcol udtc 



May 17 



June 25 



June 1 1 



July 2 



July 14 



Aug. 31 



Oct. 2 



Oct. 1 1 



Aug. 26 



Oct. 1 1 



Ct^nnarH Qfrnr 

 OldllUdlU cM Ul 



2 



3 



3 



5 



5 



4 



2 



3 



3 



3 



hliimhar nf nncorii Qtinnc 

 IVUIIIUcI U 1 UUdcl VdtlUPIo 



42 



39 



35 



15 



14 



38 



39 



35 



23 



19 



Abies lasiocarpa 























Average date 



May 5 



May 14 



May 26 



June 18 



June 27 



July 29 



Sep. 8 



Aug. 31 



July 30 



Sep. 18 



Earliest date 



Anr 1 P; 



Apr. 1 J 



Am 17 



Apr. 1 / 



Maw in 

 iviay 1 u 



June 5 



June 1 1 



liinn 90 



June ZU 



Aug. 25 



lull, 9n 

 July JU 



lull, 1 



July 1 



Sep. 9 



LdlCdl UulC 



June 6 



June 4 



June 8 



June 30 



July 10 



Sep. 2 



Oct. 2 



Oct. 6 



Aug. 12 



Oct. 10 



Standard error 



5 



4 



3 



5 



6 



7 



4 



6 



8 



7 



Number of observations 



13 



12 



1 1 



5 



5 



1 1 



10 



10 



5 



4 



Larix occiden talis 























Average date 



Apr. 26 



May 14 



Apr. 30 



May 20 



June 3 



Aug. 1 



Aug. 25 



Aug. 22 



Aug. 6 



Sep. 4 



Earliest date 



Mar. 1 z 



Apr. 10 



Mar. zu 



Anr 9C 

 Apr ZD 



RA no in 



May 1 U 



June 1 8 



July 15 



July 1 1 



July 2 



July 31 



Latest date 



June 3 



July 2 



June 1 1 



June 29 



July 14 



Sep. 6 



Oct. 2 



Oct. 1 1 



Sep. 1 1 



Sep. 30 



Standard error 



3 



3 



3 



6 



7 



3 



3 



4 



4 



3 



Number of observations 



43 



40 



41 



14 



12 



40 



38 



35 



24 



22 



Picea engelmannii 























Average date 



May 12 



May 18 



May 27 



June 1 



June 7 



Aug. 6 



Aug. 30 



Aug. 23 



Aug. 6 



Sep. 8 



Earliest date 



Apr. \l 



Apr. 1 



May 5 



A nr 9 C 



Apr. ZD 



May 1 2 



June 9 



July 23 



June 14 



June 20 



Aug. 1 1 



Ldlcol Udlc 



Oct. 2 



limp 71 



July 10 



June 11 



May 12 



July 1 1 



Oct. 2 



Oct. 1 1 



Sep. 24 



Oct. 5 



9tanHarH prrnr 



OlullUQIU CI 1 Ul 



5 



3 



2 



6 



5 



7 



3 



4 



5 



3 



Miimhpr nf rth^pruntinn^ 



llUIMUCI Ul UUOCI V □ lIUi Id 



47 



40 



40 



16 



1 5 



39 



36 



36 



23 



23 



Pin US albicaulis^ 























Average date 



Apr. 20 



Apr. 17 



May 4 







July 4 



Aug. 7 



June 27 







Earliest date 



Apr. 



Apr. 



Anr 1 Q 



Apr. 1 







June 4 



liilu 9C1 



July ZD 



June 9 







Ldicoi Udic 



May 3 



Apr. 29 



May 21 







July 20 



Aug. 21 



July 28 







Standard error 



6 



5 



7 







10 



6 



1 1 







Number of observations 



4 



4 



4 







4 



4 



4 







Pinus contorta 























Average date 



Apr. 26 



May 4 



May 17 



June 6 



June 19 



July 27 



Aug. 24 



Aug. 14 



July 29 



Sep. 7 



Earliest date 



Mar. i / 



Mar. J 1 



Mar. c 1 



May 1 



May 2 



A/ln., 9 1 



May J 1 



June 2 



AAn., 9 1 



May J 1 



RA..,, OC 



May Zb 



Aug. 8 



1 ptp^t rintp 



May 18 



June 1 3 



June 25 



June 23 



July 12 



Sep. 1 7 



Oct. 2 



Oct. 10 



Sep. 18 



Oct. 7 



Standard error 



2 



3 



3 



2 



2 



4 



5 



6 



4 



3 



Number of observations 



45 



44 



40 



38 



36 



47 



40 



42 



39 



29 



Pinus monticola 























Average date 



Apr. 28 



May 6 



May 21 



June 1 1 



June 28 



Aug. 11 



Aug. 10 



Aug. 13 



Aug. 1 



Sep. 8 



Earliest date 



Mar. 1 L 



Apr. 5 



\hnr 97 



Mar. 1 1 



May 1 



May 2 



June 9 



June 1 



1 ■ inn 1 ^ 



June 1^ 



liinn 1 n 



June lu 



Aug. 1 



Latest date 



June 6 



June 25 



June 2 1 



July 3 



July 20 



Oct. 21 



Sep. 21 



Sep. 30 



Aug. 26 



Oct. 2 



Standard error 



2 



2 



3 



3 



3 



5 



5 



3 



3 



2 



Miimhpr nf nhcpruatinriQ 



54 



53 



51 



38 



35 



49 



49 



49 



40 



37 



Pinus ponderosa 























Average date 



Apr. 24 



May 3 



May 11 



June 20 



June 30 



July 20 



Aug. 26 



July 29 



Aug. 17 



Sep. 5 



Earliest date 



Mar. 1 1 



Anr C 



Apr. b 



RAnr 97 



Mar. LI 



June 7 



1, ,nn 9 n 



June zU 



June 4 



i.ii., 1 n 

 July lU 



June 4 



l,>l>, 7 



July / 



A i.n 1 C 



Aug. 1 3 



Latest date 



June 20 



May 25 



June 25 



July 7 



July 17 



Aug. 21 



Oct. 2 



Oct. 6 



Sep. 16 



Sep. 16 



Standard error 



4 



3 



5 



4 



4 



4 



5 



10 



6 



3 



Niimhpr nf nh^pru^tinn^ 



IVUHIUCI Ul UUoCIVullUIIO 



23 



23 



18 



7 



7 



21 



1 7 



19 



10 



1 1 



Pseudotsuga menziesii 























Average date 



May 2 



May 17 



May 23 



May 31 



June 14 



Aug. 10 



Aug. 12 



Aug. 19 



Aug. 6 



Sep. 13 



Earliest date 



Mar. 1 D 



Anr C 



Apr. 3 



RAnr 97 



Mar. LI 



Anr 9n 



Apr. zu 



May 1 



June 1 1 



May ZU 



June 1 6 



liinn 1 n 



June 1 u 



Ann 09 



Aug. zz 



Latest date 



limp 1 2 



lunp 29 



iJUl IC {.\J 



lunp 19 



U Ul IC \ \J 



July 2 



July 15 



Oct. 21 



Oct. 2 



Oct. 7 



Sep. 16 



Oct. 5 



Standard error 



2 



3 



2 



4 



4 



5 



5 



4 



4 



2 



Number of observations 



53 



51 



50 



25 



24 



49 



47 



44 



32 



27 



Jhuja plicatt 























Average date 



Apr. 21 



May 15 



May 16 



May 18 



June 2 



Aug. 2 



Aug. 8 



Aug. 7 



Aug. 15 



Sep. 16 



Earliest date 



Apr. 1 



A nr 9 C 

 Apr. ZD 



An. 9 n 

 Apr. lu 



May 1 



AA n.i 9 n 



May zU 



1 1 inn 9 n 



June ZU 



li,l>, 9 



July z 



Aug. 1 



lull, 1R 



July lb 



Ann 9n 

 Aug. ZU 



Latest date 



May 23 



June 5 



June 1 



May 28 



June 10 



Sep. 30 



Sep. 1 



Aug. 12 



Sep. 10 



Oct. 12 



Standard error 



3 



5 



g 



3 



4 



17 



5 



6 



4 



5 



Number of observations 



21 



8 



4 



8 



6 



5 



16 



2 



14 



1 1 



Jsuga heterophylla 























Average date 



Apr. 25 



May 11 



May 23 



May 18 



May 31 



Aug. 16 



Aug. 24 



Aug. 21 



Aug. 6 



Sep. 12 



Earliest date 



Apr. 4 



Apr. 16 



Apr. 26 



May 3 



May 15 



June 6 



July 10 



June 1 1 



July 1 



Aug. 25 



Latest date 



May 15 



June 22 



June 20 



June 1 



June 12 



Sep. 15 



Sep. 20 



Sep. 10 



Aug. 30 



Oct. 7 



Standard error 



2 



3 



3 



3 



3 



4 



4 



4 



6 



4 



Number of observations 



30 



26 



25 



10 



10 



26 



28 



22 



10 



9 



'These were small trees at 2,300 ft (700 ml, well below tlieir natural range. 



^ Thuja plicata does not have leaf buds; therefore, bud burst and winter buds formed are the start and cessation of leaf growth. 



9 



