Reed.—On the Anatomy of some Tubers . 
547 
Bibliography. 
1 . Bernard, N. : Etudes sur la tubdrisation. Rev. G&i. de Bot., t. xiv, 1902, pp. 5, 58, 101, 
170, 219, and 269. 
2 . Bucherer, E. : Beitrage zur Morphologie und Anatomie der Dioscoreaceen. Bibliotheca Bot., 
Bd. iii, H. 16, 1889. 
3. Dale, E. : Origin, Development, and Morphological Nature of Aerial Tubers of Dioscorea saliva. 
Ann. Bot., vol. xv, 1901, p. 491. 
4 . De Bary, A. : Comparative Anatomy of Phanerogams and Ferns. Eng. Ed. 1884. 
5 . Dubard, M., and Viguier, R.: Le systeme radiculaire de XEuphorbia Intisy. Rev. Gen. de 
Bot., t. xvii, 1905, p. 260. 
6. Dufour, L.: Quelques experiences sur la Solatium Commersoni. Rev. Gen.de Bot., t. xix, 
I 9 ° 7 > P- 353 - 
7 . Holm, T.: Morphological and Anatomical Studies of the Vegetative Organs of Phexia. Bot. 
Gaz., vol. xliv, p. 22. 
8. Jost, L. : Lectures on Plant Physiology. Eng. Ed., 1907, p. 314. 
9. Jumelle, H. : De l’influence des endophytes sur la tuberisation des Solatium. Rev. Gen. de 
Bot., t. xvii, 1905, p. 49. 
10 . Sablon, L. du : Sur le tubercule du Tamils communis. Rev. G^n. de Bot., t. xiv, 1902, 
P- T 45 * 
11 . Shaw, F. J. F.: The Seedling Structure of Araucaria Bidwillii. Ann. Bot., vol. xxiii, 1909, 
P- 3 21 * 
12 . Solereder, H. : Systematic Anatomy of the Dicotyledons. Eng. Ed., vol. i, p. 5S1. 
EXPLANATION OF FIGURES IN PLATES XLII AND XLIII. 
Illustrating Mr. Reed’s paper on the Anatomy of some Tubers. 
Abbreviations used : cam., cambium; co., cortex; ck ., cork cells; c.c., cork cambium ; En. y endo- 
dermis; Ep., epidermis: Hyp., hypoderma ; A/., medulla; M.Ph ., medullary phloem ; M.ry., medul¬ 
lary ray; P., phelloderm ; P.xy., protoxylem ; xy., xylem ; xy.p., xylem parenchyma ; st.g., starch 
grains; S., stolon; 71 , tuber; s.lv., scale leaves. 
Figs. 1-6. Solatium tuberosum. 
Fig. 1. Transverse section of stolon, showing portion of vascular cylinder. 
Fig. 2. Longitudinal section of stolon, showing medullary phloem. 
Fig. 3. Longitudinal section of tuber, showing isolated strands of medullary phloem. 
Fig. 4. Longitudinal section of tuber at its junction with stolon, showing the isolated protoxylem 
and the meristematic pith cells. 
Figs. 5 and 5 a. Transverse section of tuber, showing origin and development of cork cambium. 
Fig. 6. Longitudinal section of tuber, showing isolated strand of medullary phloem. 
Figs. 7-14. Helianthus tuberosus. 
Figs. 7 and 8. Drawings of young tuber3. 71 , developing tuber; s.lv., scale leaves; S., stolon. 
Fig. 9. Transverse section of stolon, showing portion of the vascular cylinder. 
Fig. 10. Transverse section of tuber, showing isolation of protoxylem by developing wood 
parenchyma. 
