36 
THE LEAF-TRACE IN SOME PINNATE LEAVES. 
DESCRIPTION OF FIGURES IN TEXT. 
Text-fig. L Diagrammatic representation of the leaf -traces of- — 
(a) Polypodium serrulatum (Sw.) Mett. 
B 
cultratum, Willd. 
B 
polypodioides (L.) Hitchcock. 
(d) 
plumula, H. B. Willd., and 
lepidopteris (Langsd. et Fisch.) Kze. 
(e) 
loriceum, Linn. 
catliarinse, Langsd. et Fisch. 
brasiliense, Poir., and 
fraxinifolium, Jacq. 
(/) 
,, 
decurrens, Raddi. 
Text-fig. 2. Diagrammatic representation of the forms of leaf-trace found in leaves of different length in 
Polypodium vulgare, Linn. The type shown in a is found in the shortest leaves ; those in b, c, and d in 
longer leaves, and those in e and/ in the longest leaves. 
Text-fig. 3. Diagrams to show the formation of the pinna-traces in Aspidium martinicense, Spr., and 
Aspidium trifoliatum (L.) Sw. 
Text-fig. 4. Diagrams showing the leaf-trace and the method of forming the pinna-trace in Leptochilus 
guianensis (Aublet) C. Chr. 
Text- fig. 5. Diagrams illustrating the formation of the pinna-trace in Polystichum adiantiforme 
(Forst.) J. Sm. 
Text-fig. 6. A series of diagrams to illustrate the method of forming the pinna-trace in Dryopteris 
grandis (Pr.) C. Chr. 
Text-fig. 7. Diagrammatic representation of the development of the pinna-trace in Ciboiium barometz 
<L.) J. Sm. 
Text-fig. 8. Diagrams to illustrate the type of leaf-trace found in Lonchitis pubescens, Willd., and the 
method of forming the pinna-trace. 
Text-fig. 9. Series of diagrams to illustrate the form of leaf-trace and the development of the pinna- 
trace in Stangeria paradoxa, T. Moore. 
Text-fig. 10. Diagrammatic representation of the leaf -trace of Gycas revoluta, Thunb., 
(a) below the first pinna, 
( b ) near the tip of the rachis, 
(c) below the terminal pinnse. 
Text-fig. 11. Diagrammatic representation of the leaf -trace of Zamia Lindeni, Regel. 
Text-fig. 12. Series of diagrams illustrating the changes in the leaf-trace of Dioon spinulosum, Dyer, 
from below the first pinnae to below the ultimate pinnae. 
Text-fig. 13. Diagrams illustrating the type of leaf-trace found in Encephalartos Altensteinii, Lehm., 
and the changes which it; undergoes in connection with the formation of the pinna-traces. 
Text-fig. 14. Diagrams to illustrate the form of leaf -trace and the pinna- trace in Cocos campestris, Mart. 
Text-fig. 15. Diagrams showing the development of the pinna-trace in Phoenix dactylifera, Linn. 
Text-fig. 16. Diagrams illustrating — 
(a) the form of the leaf-trace, and 
(i b ) the development of the pinna-traces in Spiraea Aruncus, Linn. 
Text-fig. 17. 
lobata, Murr. 
Diagrams illustrating the leaf-trace and the formation of the pinna-trace in Spiraea 
