442 BOTANICAL GAZETTE [may 



LITERATURE CITED 



i. Arber, Agnes, The phyllode theory of the monocotyledonous leaf, with 

 special reference to anatomical evidence. Ann. Botany 32:465-501. 1918. 



2. Clos, D., Les vrilles des Smilax ni folioles ni stipules. Bull. Soc. Bot. France 

 4:984-987. 1857.. 



3. Darwin, C, The movements and habits of climbing plants. London. 

 1891. 



4. "Domin, K., Morphologische und phylogenetische Studien iiber die Stipular- 

 bildungen. Ann. Jard. Bot. Buitenzorg 24: 117-326. pis. 23-33. 191 1. 



5. Gluck, H., Die Stipulargebilde der Monokotyledonen. Verhandl. Natur- 

 hist.-Med. Vereins Heidelberg. N.F. 7:1-96. pis. 1-5. 1901. 



6. Hansgirg, A., Phyllobiologie. Leipzig. 1903. 



7. Queva, C, Recherches sur l'anatomie de l'appareil vegetatif des Taccacees 

 et des Dioscorees. Mem. Soc. Sci. Lille, pp. 457. pis. 18. 1894. 



EXPLANATION OF PLATE XXII 



In all sections «ylem is indicated in black, and phloem and undifferentiated 

 bundles in white. 



Fig. 1. — Smilax herbacea L.: single leaf showing sheath (s), tendrils (/), 

 and petiole (p)\ Xf. 



Fig. 2. — Smilax herbacea L.: A, transverse section of very young lamina 

 and accompanying tendrils; vascular tissue too young to be well differentiated; 



undeveloped 



these sections 



illustrate large size of tendrils relative to lamina in embryonic stage; X3 1 



circa. 



Fig. 3. — Smilax herbacea L. : transverse sections of mature leaf; A , through 

 leaf sheath; J5, through petiole and tendrils, showing relative orientation of 

 organs ; X 1 9 circa. 



Fig. 4. — Smilax herbacea L.: transverse section close to base of lamina 

 passing through midrib (mr) and main lateral (ml); X19 circa. 



Fig. 5. — Smilax tnauritanica Poir .: A, pseudo-lamina with thickened apex 

 (ap); Xf; B, transverse section through apex; X 19 circa. 



, — Gloriosa 



XI. 



Fig. 7. — Gloriosa superba L.: transverse section through tendril; lateral 

 veins fused so that only midrib and 2 laterals show; X31 circa. 



— Glori 



apex 



X31 circa. 



