Seedling Structure of Gymnosperms . If. 
227 
Plant. 
Series. 
Cotyledons. 
Total. 
Whole- 
! Half- 
Sub.- 
Root. 
cots. 
j cots. 
cots. 
P. sylvestris 
D 
6 
1 * 
3 
3-arch 
3 ? ....... 
E 
6 
2 
4 
4-arch 
33 ....... 
F 
6 
2 
4 
2 -arch 
5 ? 
G 
6 
2 
2 
2 
3 -arch 
33 •••••*• 
H 
6 
1 
4 
1 
3-arch 
•••••♦• 
I 
7 
4 
3 
4- arch 
33 •••••*• 
J 
■7 
2 
4 
1 
4-arch 
33 ••••••• 
K 
7 
1 
4 
2 
3 -arch 
33 ••••••• 
L 
7 
1 
6 
— 
4- arch 
3 3 
M 
7 
3 
2 
2 
4-arch 
Larix occidentalis 
— 
6 
1 
4 
1 
3-arch 
L. leptolepis 
A 
5 
1 
4 
— 
3-arch 
,, 
B 
6 
2 
— 
4 
2 -arch 
L. europaea 
A 
6 
— 
4 
2 
2 -arch 
,, 
B 
6 
— 
4 
2 
2-arch 
33 
C 
7 
2 
2 
3 
3-arch 
Pseudolarix Kaempferi .... 
A 
5 
4 
— 
1 
4-arch 
33 33 .... 
Araucaria Cunninghamii ) 
A. brasiliensis \ ’ ’ 
B 
4 
4 
— 
— 
4-arch 
all 
2 
2 
— 
— 
2 -arch 
EXPLANATION OF PLATE XV. 
Illustrating Mr. T. G. Hill and Miss de Fraine’s Paper on the Seedling Structure 
of Gymnosperms. II. 
Abbreviations : — mx. metaxylem ; ph. phloem ; px. protoxylem ; r. d. resin-duct ; 
T. S. transverse section. 
Fig. 1. Pinus contort a, var. Murrayana (Series I). T. S. through upper region of hypocotyl. 
X 240. 
Fig. 2. The same, about 10 fx below, x 240. 
Fig. 3. Pinus montana , var. gallica. T. S. of a cotyledonary bundle, showing unequal bifurca- 
tion of the vascular tissues, x 240. 
Fig. 4 a. Araucaria Cunninghamii. A normal seedling. Nat. size. 
Fig. 4 b. Araucaria Cunninghamii . Cotyledons and upper part of hypocotyl of an abnormal 
seedling. Nat. size. 
Fig. 5. Araucaria brasiliensis. Photograph of seedling, x about f. 
R 
