EMBRYOLOGY IN RELATION TO TAXONOMY 373 



Hagerup, 0. 1946. Studies on the Empetraceae. K. Danske Vidensk. Selsk., 



Biol. Meddel. 20(5): 1-49. 

 Hallier, H. 1912. L'origine et le systeme phyl^tique des Angiospermes ex- 

 poses a l'aide de leur arbre g£n6alogique. Arch. Neerland. Ill B. 1 

 Hallock, F. A. 1930. The relationship of Garrya. The development of the 



flowers and seeds of Garrya and its bearing on the phylogenetic position of the 



genus. Ann. Bot. 44: 771-812. 

 Hegelmaier, F. 1867. Zur systematik von Callitriche. Verhandl. Bot. Ver. f. 



der Brandenb. 9: 1. 

 Hutchinson, J. 1926. "The Families of Flowering Plants. I. Dicotyledons." 



London. 

 . 1934. "The Families of Flowering Plants. II. Monocotyledons." 



London. 



. 1948. "British Flowering Plants." London. 



Ishikawa, M. 1918. Studies on the embryo sac and fertilisation in Oenothera. 



Ann. Bot. 32: 279-317. 

 J0rgensen, C. A. 1923. Studies on Callitrichaceae. Bot. Tidskr. 38: 81-126. 

 . 1925. Zur Frage der systematischen Stellung der Callitrichaceen. 



Jahrb. f. wiss. Bot. 64: 440-442. 

 Just, Th. 1946. The use of embryological formulas in plant taxonomy. Bui. 



Torrey Bot. Club 73: 351-355. 

 Krause, K. 1930. Liliaceae (In Engler and Prantl's "Natiirlichen Pflanzen- 



familien, 2d ed. 15A: 227-390). 

 Maheshwari, P. 1945a. The place of angiosperm embryology in research and 



teaching. Jour. Indian Bot. Soc. 24: 25-41. 

 . 1945&. Embryology of angiosperms as a field for research. Nature 



[London] 156: 354-355. 

 — ■ . 1946. The Fritillaria type of embryo sac: a critical review. Jour. 



Indian Bot. Soc. M. O. P. Iyengar Comm. Vol., pp. 101-119. 

 Mauritzon, J. 1934. Ein Beitrag zur Embryologie der Phytolaccaceen und 



Cactaceen. Bot. Notiser 1934, pp. 111-135. 

 . 1939. Die Bedeutung der embryologischen Forschung fiir das naturliche 



System der Pflanzen. Lunds Univ. Arsskr. N.F. II, 35(15): 1-70. 

 Neumann, M. 1935. Die Entwicklung des Pollens, der Samenanlage und des 



Embryosackes von Pereskia amapola var. argentina. Osterr. bot. Ztschr. 



84: 1-30. 

 Newton, W. C. F. 1926. Chromosome studies in Tulipa and some related 



genera. Jour. Linn. Soc. London, Bot. 47: 339-354. 

 Ownbey, M. 1940. A monograph of the genus Calochortus. Ann. Missouri 



Bot. Gard. 27: 371-560. 

 Pax, F. 1896. Empetraceae (in Engler and Prantl's "Natiirlichen Pflanzen- 



familien," 1st ed.). 

 and Hoffman, C. 1931. Callitrichaceae (in Engler and Prantl's Na- 

 tiirlichen Pflanzenfamilien, 2d ed). 

 Samuelsson, G. 1913. Studien iiber die Entwicklungsgeschichte einiger Bicornes- 



Typen. Svensk Bot. Tidskr. 7: 97-188. 



