192 “ MorTEN P. PorsiLp. 
revolute margins. The lowest and the topmost leaves, ordinarily 
somewhat smaller than the rest, were not taken into consideration. 
On shoots with a sufficient number of leaves, 10 were measured, other- 
wise а smaller number. In all 923 leaves of 135 specimens were inve- 
stigated. 
In the following lists I—V. marks 
N the number of leaves measured, 
| the length in millimetres, 
b the breadth in millimetres, 
I/b the ratio between lenght and breadth, i. e., the shape 
of the leaves. 
The lists are arranged after the ratios, beginning with the broadest 
‚ and ending with the narrowest leaves. 
I. Ledum decumbens. 
Wast-eGreeniand, 09—70” Lat. N; 
МТ b 1/b 
Капоета| мати 2 эт о ml 3,04 
Qeqertalik . . . 66°44’, Brummerstedt.... 6 13,5 3,0 4,50 
Nakajanga..... 662502 de ANG ID, Jensen 20 159 4,58 
Oegqertarssuage 025. uy der a eee sar эй 1,6 4,69 
(ОКО havne SIND, IRS BROWN 0000000 ) 18,2 A 4,78 
Holsteinsborg .. 66°56’, Lundager........ оо 2,3 4,83 
Е 22,64 50,2 Js Wala o5o0000006 Su 1,6 5,69 
Holsteinsborg .. 66°56’, Deichmann....... о Oe 1,7 5.08 
IPAUKMESOO, oo 5 0 0 6 бо Ма. о Ш Lg 5,92 
Diskofjord..... 827, Mk IP, Borel: 56 5 o IQ 15% 2,8 6,00 
Kangerdluarssuk 67°58’, Е. Porsild........ 10 10,4 11,7 6,02 
Diskofjord..... 6929, ML IP. orales so 6 10 100 2,3 6,09 
Uvkusigssat ... 72218, IC J. V. Steenstrup 6 1158 Lg 6,21 
IÉGEEO : 600000 OSLO NAN IE MERS qu Ii al 6,24 
Laksefjord..... T2 Oil, Win, & Wl №, Persie) HO) 14,6 2,3 6,27 
Skansen....... SD, ML IP, Рева... 10 11,7 1,8 6,36 
Ikertogirer ва ОУ ne 7 18.0 2,0 6,50 
ЗАО АУМ >.> (0918. Biel съ оововоьв о 18,2 2,0 6,60 
Lolsteinioons , . O0 80, Jo ММ! cc coco о 190 2,0 6,75 
А АВЕО 6 0 00000 68°48", М. Р. Porsild ..... ID 105 1.5 6,75 
ОЕ 55555 CAI, Yo М 6000000 4. 100 2,5 6,80 
о ею 555 OOD, SION 00000000 @ 18,4 11,9) 7,02 
Unninetisiag ... 102, J. Val... 7 120 Lg 7,06 
