Anatomy of Solenostelic Ferns. 
74i 
EXPLANATION OF FIGURES IN PLATES 
XXXIII, XXXIV, AND XXXV. 
Illustrating Mr. G Wynne- Vaughan’s Paper on Solenostelic Ferns. 
Figs. 12, 20, and 22 to 28 are from photographs; a more or less under-exposed 
print being used as a camera-lucida drawing. All the other figures, except Fig. 29, 
are diagrams. Fig. 29 was drawn from the section. The following lettering 
is used throughout ; L. T., leaf-trace ; e ., external endodermis ; e'., internal 
endodermis ; P., external pericycle; P., internal pericycle ; ph., external phloem; 
ph! ., internal phloem ; pph ., external protophloem ; ppti internal protophloem ; 
prx., protoxylem. 
Fig. 1. Dicksonia punctiloba. Diagram of vascular system of rhizome including 
a node and the base of a leaf-trace. The upper surface of the rhizome would face 
the observer. 
Fig. 2. Dicksonia apiifolia. Ditto. 
Fig. 3. Davallia Speluncae. Ditto. 
Fig. 4. Hypolepis millifolia. Ditto: l.sh., lateral shoot arising from basiscopic 
margin of leaf-trace ; a ., vascular strand running from free margin of lateral shoot 
to proximal margin of leaf-trace ; b., a similar strand running to distal margin of 
leaf-trace. 
Fig. 5. Hypolepis tenuifolia. Ditto : l.sh. and a. as in Fig. 4 ; c., vascular strand 
running from free margin of leaf-gap to acroscopjc margin of leaf-trace. 
Fig. 6. Hypolepis repens. Ditto : l.sh., a. and b. as in Fig. 4 ; l.sh'., lateral 
shoot arising from acroscopic margin of leaf-trace. 
Fig. 7. Nothochlaena Marantae. Diagram of vascular system of rhizome 
including two nodes and the bases of the departing leaf-traces. The upper surface 
of the rhizome faces obliquely towards the top of the plate. 
Fig. 8. Pellaea rotundifolia. Ditto. 
Fig. 9. Gymnogramme calamelanos. Ditto. The stem is radial. 
Fig. 10. Plagiogyria biserrata. Diagram of transverse section of the vascular 
system. The steles are unshaded ; the dark masses sc.e. and sea. represent 
sclerenchyma respectively external and internal to the stelar ring. 
Fig. 11. Dicksonia adiantoides. Diagram of \ascular system of rhizome, 
including a node and the base of a leaf-trace : l.sh., lateral shoot arising from basi- 
scopic margin of leaf-trace ; i.s., ridge upon internal surface of solenostele. The 
upper surface of rhizome would face the observer. 
Fig. 12. Dicksonia adiantoides . Transverse section of the free margin of a leaf- 
gap in the solenostele : i.s., the free xylem-strand forming a projection on the 
internal surface. 
Fig. 13. Dicksonia rubiginosa. Diagram of the vascular system of the rhizome 
including a node and the base of a leaf-trace : l.sh. and i.s. as in Fig. 11 ; 
lacunae in the solenostele not related to the departure of a leaf-trace. The upper 
surface of the rhizome would face the observer. 
