414 West. — A Contribution to the Study of the Marattiaeeae. 
Fig. i B. Tranverse section of the stele in the plane a, ( 3 , of the same model, showing almost 
perfect solenostelic structure. 
Fig. 2. Danaea alata, Sm. Rhizome of an adult plant, showing the well-marked dorsiven- 
trality. Nat. size. 
Fig. 3. Raulfussia gesculifolia , Bl. Model of the stelar system of a portion of the rhizome of 
an old plant, viezved from below (cf. Text-fig. 15). 
Fig. 4. Sporeling of Danaea alata, Sm. Nat. size. 
Figs. 5 and 6. Bud-protection in Danaea alata , Sm. The stipules ( st .) of the young leaf com- 
pletely envelop the next younger leaf. Slightly enlarged. 
PLATE XXII. 
Fig. 7. Danaea alata , Sm. Front view of the model represented in Fig. 1 a. 
Fig. 8. Danaea nodosa , Sm. Large sporophyte, showing habit. The leaves had been artificially 
removed, x f. 
Fig. 9. A and B. Sporelings of Danaea alata> Sm., showing the inception of the dorsiventral 
habit, x 
Fig. 10. Angiopteris evecta, Hoffm. Rhizome of a moderately large plant, showing well-marked 
dorsiventrality. x 
