No. 2, September, 1921] MORPHOLOGY AND TAXONOMY, BRYOPHYTES 137 



There are proposed for the types of rooting stems found, especially in grasses, the follow- 

 ing terms: Determinate and indeterminate rhizomen, determinate and indeterminate 

 stolons. — D. Reddick. 



874. Sciii'^RHOFF, P. N. Der Embryosack von Tussilago Farfara. [The embryo sac of 

 Tussilago Farfara.] Ber. Deutsch. Bot. Ges. 38: 217-219. Fuj. I. 1920.— It is the micro- 

 lO'lar megaspore which develops into the embryo sac in this plant. Preparations of mature 

 embryo sacs showed G 2-nucleate antipodals, or 4-nucleate, or 12 2-nucleate, so that in most 

 cases 24 antipodal nuclei were present. Although in some Compositae in which the micropy- 

 lar megaspore develops into the embryo sac the other .3 megaspores take part in the develop- 

 ment of the antipodal tissue, that is not the case in Tussilago Farfara. The author calls 

 attention to the apparent sj'stematic significance of the development of the chalazal or of 

 the micropylar megaspore into the embryo sac in different tribes of the Compositae. — R. M. 

 Holman. 



MORPHOLOGY AND TAXONOMY OF BRYOPHYTES 



Alexander W. Evans, Editor 



(See also in this issue Entry 663) 



875. CoRBiERE, L., ET E. Jahandiez. Muscinees du Departement du Var. [Bryophytes 

 of the department of the Var (France).] Ann. Soc. Hist. Nat. Toulon 4 (Suppl.): 1-G3. 1921.— 

 The present report on the bryophytes of the department of the Var is dedicated to the late 

 Lieut. M. MoxjRET, upon whose collections it is largely based. After citing the earlier works 

 which deal with the region in question, the authors enumerate 248 mosses and 51 hepatics, 

 omitting certain records about which the evidence seems to be insufficient. Each species is 

 accompanied by full data regarding stations and collectors, and many critical notes are inter- 

 polated, those dealing with Fissidens Moureti Corb. and Grimmia Pitardi Corb. being partic- 

 ularly full. The following new varietal names or combinations are proposed: Cephaloziella 

 Turneri var. dentata (Raddi) Douin, based on Jungermannia dentata Raddi in part ; Fabronia 

 pusilla var. nervosa Theriot, based on F. Schimperiana Br. eur. not De Not.; and Trichosto- 

 vium hrackydonlixim var. unguicu latum (Philib.) Corb. & Jahand., based on Hymenostomum 

 unguiculatum Philib. and including Weisia Alberti Corb. as a synonym. — A. W. Evans. 



876. Fleischer, Max. Uber die Entwicklung der Zwergmannchen aus sexuell diflferen- 

 zierten Sporen bei den Laubmoosen. [Development of dwarf males from sexually differentiated 

 spores in the mosses.] Ber. Deutsch. Bot. Ges. 38: 84-92. PL 2 (colored), 1 fig. 1920. — 

 The author worked particularly on the following 3 species; Macromitrium Blumei, Schlothei- 

 mia Koningsbergeri, and Trismegistia Brauniana. In all 3 species he found that the male 

 plants were always dwarf and epiphytic on the female plants. A morphological difference 

 thus exists between male and female plants. Evidence was abundant that the dwarf male 

 plants developed from a primary protonema, that is, had their origin in spores which lodged 

 on the vegetative portions of the female plants. In the Macromitrium and the Schlotheimia 

 spores of different sizes were found, and the larger spores, containing the greater supply of 

 food, gave rise apparently to the dwarf plants. In Trismegistia Brauniana dwarf female 

 plants, as well as dwarf male plants, were found on normal female plants. The dwarf female 

 plants, however, were too young to show archegonia and would probably have developed 

 into normal female plants. These various observations lead the author to conclude that 

 the protonemata of these 3 species are dioecious and that heterospory (sexual differentiation) 

 exists in the spores. — H. Bergfried. 



877. Fleischer, Max, und Leopold Loeske. Iconographia bryologica universalis. — 

 Abbildungen von Moosen aus alien Erdteilen nach Originalzeichnungen sowie aus bryologischen 

 Werken. Serie I: Auswahl von Abbildungen aus Loeske: "Die Laubmoose Europas." [Uni- 

 versal bryological iconography. Illustrations of mosses from all parts of the earth according 



