the Embryo and Seedling in the Gramineae. 
22 1 
List in Chronological Order of the Principal Papers relating 
to the Embryo and Seedling of the Gramineae which have 
appeared since 1872. 
Van Tieghem, Ph. ( 72 ): Observations anatomiques sur le cotyledon des Graminees. Ann. des 
sci. nat., ser. v, Bot., t. xv, pp. 236-76, 2 pi., 1872. 
Hegelmaier, F. ( 74 ) : Zur Entwicklungsgeschichte monokotyledoner Keime, nebst Bemerkungen 
iiber die Bildung der Samendeckel. III. Triticum vulgare. Bot. Zeit., xxxii, pp. 657-68, 
1 pi., 1874 - 
Warming, E. ( 79 -’ 80 ): Forgreningen og Bladstillingen hos Slgegten Nelutnbo. Videnskab. 
Meddell. fra den naturh. Foren. Kjobenhavn, 1879-80, pp. 444-55, 1 pi., 1 text-tig. (The 
author’s views regarding the Grass embryo are explained in a footnote to pp. 446-8.) 
Klebs, G. (’ 85 ) : Beitrage zur Morphologie und Biologie der Keimung. Untersuchungen aus dem 
Botanischen Institut zu Tubingen, Bd. i, Heft 4, pp. 536-635, 24 text-figs., 1885. 
Lewin, M. (’ 87 ): Bidrag till Hjertbladets Anatomi hos Monokotyledonerna. Bihang till K. Svenska 
Vet.-Akad. Handlingar, Bd. xii, Afd. iii, No. 3, 28 pp., 3 pi., 1887 (for 1886). 
Hackel, E. (’ 87 ): Gramineae, in Die natiirl. Pflanzenfamilien, von A. Engler und K. Prantl. Teil ii, 
Abth. ii, pp. 10-14, 1887. 
Tschirch, A. (’ 90 ) : Die Saugorgane der Scitamineen-Samen. Sitzungsber. d. k. preuss. Akad. 
d. Wissenschaften zu Berlin, Jahrg. 1890, Erster Halbband, pp. 131-40, 1890. 
Bruns, E. (’ 92 ) : Der Grasembryo. Flora, Bd. lxxvi (Erganzungsband zum Jahrg. 1892), pp. 1-33, 
2 pi., 1892. 
Schlickum, A. (’ 96 ) : Morphologischer und anatomischer Vergleich der Kotyledonen und ersten 
Laubblatter der Keimpflanzen der Monokotylen. Bibliotheca Botanica, Bd. vi, Heft 35, 
88 pp., 5 pi., 1896. 
CELAKOVSKf, L. J. (’ 97 ): Ueber die Homologien des Grasembryos. Bot. Zeit., lv, Abth. I 
pp. i 4 x - 74, 1 pi., 1897. 
Van Tieghem, Ph. (’ 97 ) : Morphologie de l’embryon et de la plantule chez les Graminees et les 
Cyperacees. Ann. des sci. nat., ser. viii, Bot., t. iii, pp. 259-309, 1897. 
Sargant, E., and Robertson, A. (’ 05 ) : The Anatomy of the Scutellum in Zea mats. Ann. of 
Bot., vol. xix, pp. 115-123, 1 pi., 1905. 
Kirchner, O. von, Loew, E., and SchrcVter, C. (’ 08 -’ 12 ) : Lebensgeschichte der BlUtenpflanzen 
Mitteleuropas. Bd. i, Abt. ii, Bogen 1-18. Gramineae, pp. 1-288, 399 text-figs., 1908, 
1909, 1912. 
EXPLANATION OF FIGURES IN PLATES IX, X. 
Illustrating the paper by Miss Sargant and Mrs. Arber on the Comparative Morphology of the 
Embryo and Seedling in the Gramineae. 
The lettering throughout the Plates is uniform : sc., main bundle of scutellum; sc'., trace of 
scutellum in axis ; P, P ', coleoptile bundles ; M, midrib of first leaf ; L x , Z 2 , Z 3 , lateral traces 
from first leaf on one side of M; L \, L \, Z' s , lateral traces from first leaf on other side of M; 
r., r., cauline roots; rx ., root-xylem ; rp., rp., root-plates. 
PLATE IX. 
A vena sativa, L. 
Fig. 1. Coleoptile bundle from transverse section through young seedling, in which plumule is 
entirely enclosed within coleoptile. The phloem groups are deeply stained because they are full of 
proteids, and they are quite distinct {ph., ph.). One group of protoxylem {px.). x 250. 
