48 
PROF. JULIUS MACLEOD ON TEN 
TABLE XXII. 
Description of Mnium spinosum, Schwaeg. 
A.—Specific limits of variation. 
[Switzerland : Engstligen Falls, Adelboden ; H. N. Dixon dedit.—Styria : 
in sylvis prope St. Nicolai, in vallo Solk.— Very rare in the British 
Islands.] 
» 
” 
” 
$ 0 - O0 Ov RD WY 
» 
mn 
e 
» 
"m 
mw 2 nm 
” 
. Length of the leaves: 5:01-8:10 mm. 
. Breadth of the leaves: 
1:55-2:84 mm. 
f j at their base: 0:68-1*06 mm, 
cells: 21-31 p. 
» 
. Number of cells: 65-96. 
. Breadth of the border: 62-92 y. 
. Number of cells of the border: 10-13. 
marginal teeth : 43-72. 
double marginal teeth : 53-47. 
teeth on the nerve at the back of the leaves: 2-12. 
. Length of the nerve: nerve always reaching the summit. 
. Tooth at the summit of the leaves: always existing. 
. Number of leaves: 24-33. 
fruits: 2-6. 
B.—Gradation of the characters. 
[One pateh : Adelboden, 8 stems.] 
Intervals: 1. 9; 3. 4. 5. 6. Ts 8 9. 10. 
Length leaves (mm.) .. 
Breadth leaves (mm.) 
5. base:(mm.).... 
» cells (p) 
Number cells 
Breadth border (u)... . 
Calla Dorder. se: eee 
Marginal teeth 
Double marginal teeth .... 
Higeth:nerve... es. 
Length nerve ........ 
Tooth summit. Ls» 
6:60 
nios Tog 280 455 087. 6:91 616 6088 6:93 7:26 
O75 1:41 2:42 2:80 286 2:81 276 274 266 2°52 
m. Oel 095 114. 10 110 102 0°95 0902 089. 090 
PU 15 22 27 29 29 29 29 29 28 28 
nic ae 90 59 R4 91 91 90 88 88 87 82 
iia o OF a 75 16 73 TE 75 73 74 76 
Hio. SLE DE ll 1l IU 1 i 11 11 ll 
Oe ic eee 18 35 44 47 52 55 57 63 63 
0 2 12 24 2m 80 $4 88 40 . 42 
re ie 0 001 1 Lp 245 OI 40 48 76 
n +-+ + Rock cb ok o4 c4 c 
Be Fo + + + + + + + + + 
