1914] FARRELL—CYRTANTHUS SANGUINEUS 435 
CouLTEeR and Dr. W. J. G. Lanp for kind assistance during the 
early part of the investigation, and to Sister HELEN ANGELA under 
whose direction it was completed. 
THE COLLEGE oF SAInt ELIZABETH 
Convent Station, N.J. 
LITERATURE CITED 
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Pax, F., Monograph on Amaryllidaceae in ENGLER and PRANTL’s Natiir- 
lichen Pflanzenfamilien. 1889. 
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und Dicotyledonen. Bot. Abhandl. Bonn. p. 112. 1870. 
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Pétersbourg 26:10. 1879. 
EGELMAIER, F., Zur Entwickelungsgeschichte monocotyledoner Keime 
nebst Bemerkungen iiber die Bildung der Samendeckel. Bot. Zeit. 32: 
631. 1874. 
6. SHAFFNER, J. H., Contribution to the life history of Sagittaria variabilis, 
w wow 
ae 
“ 
97- 
7. CAMPBELL, D. H., A oe study of Naias and Zannichellia. 
Proc. Calif. Acad. Sei: bai Me & 1897. 
, The development of ihe bees and embryo in Lilaea subulata 
HBK. Ann. Botany 12:1-28. 
, Studies on the Araceae. yee Botany 14:1-25. 
Io. Wirrmack K, L., Monograph on Bromeliaceae in ncten ee PRANTL’S 
Natiirlichen Panaeetaciiica. 1889 
11. Biriincs, F. H., A study of T: landsio usneoides. Bot. GAZ. 38:99-121. 
1904. 
12. ANGELA, Sister HELEN, The embryo of Ceratozamia: a physiological study. 
Bot. Gaz. 45:412. 1 
, The seedling of Foratesamis. Bor. GAz. 46:205. 1908. 
, Vascular anatomy of the seedling of Microcycas calocoma. Bor. 
Gaz. 47: 139-147. 1909 
15. Courter, J. M., and Caanceanxane, C. J., Morphology of gymnosperms. 
Chicago. 1910. 
a 
EXPLANATION OF PLATE XXIV 
The drawings were made with the aid of an Abbé camera lucida, the mag- 
nification used being 120 diameters. In every case, a indicates the tip of the 
aborted or short side of the sheath, c the longer side, and s the space within 
the sheath. 
IG. 1.—Exterior view of a young embryo before the differentiation of the 
two portions of the sheath. 
