364 SUMMARY OF CURRENT RESEARCHES RELATING TO 



(2) acrogynous. To the former group the Targionieee are referred, to 

 the second the Corsiniea?. The difference of origin of the female 

 receptacle in the two groups might serve as the basis of a new classifica- 

 tion. 



Corsinia marchantioides.* — K. Meyer describes the development of 

 the sporogonium of Corsinia marchantioides, which undergoes a period 

 of rest before dehiscence. Another characteristic is the presence of 

 short spindle-shaped sterile cells among the spores. He regards these 

 cells as serving in the early stages to supply nutrition to the spore- 

 mother-cells ; and in later stages, after the isolation of the spore- 

 mother-cells, as being (like the cells of the capsule-wall) storehouses for 

 the starch which, after the resting period, is converted into glycose, 

 leading to the growth of the capsule, the bursting of the calyptra and 

 the capsule, and the dissemination of the spores. These sterile cells 

 appear to be true rudimentary (not reduced) eiaters. 



Life-history of Porella.f — F. L. Manning gives an account of the 

 life-history of Porella platyphylla. Some of the material used had been 

 dry for many years, but, upon being soaked in water at about 31° C, it 

 revived and afforded excellent microtome-material. The author de- 

 scribes and figures the three-sided pyramidal apical cell ; the develop- 

 ment of the archegonium, which is sometimes abnormal in having two 

 rows of axial cells, each consisting of four to six neck canal cells, a 

 ventral canal cell, and an egg-cell ; the development of the antheridium,. 

 the stalk of which when mature is long and slender, two cells thick ; the 

 sporophyte. 



European Hepaticse.J — K- Midler continues his account of the 

 Hepaticse in Rabenhorst's Kryptogamen-Flora von Deutschland, Oester- 

 reich und der Schweiz, and treats of Lepidozia (6 species), and of the 

 following genera of the sub-family Ptilidioideae — Blepharo stoma (1), 

 Chandonathus (1), Anthelia (2), Schisma (2), Mastigophora (1), Ptilidium 

 (part) — giving adequate descriptions of genera and species, with keys, 

 critical notes, and figures of morphology and structure. 



Peruvian Hepaticse. § — A. W. Evans gives an account of the 

 Hepaticre gathered by the Yale Peruvian Exploring Expedition of 

 1911, under Hiram Bingham. The main work of the expedition was 

 geology and archaeology ; but animals and plants were collected by 

 H. W. Foote, and among them 31 species of Hepaticre from seven dif- 

 ferent localities lying between 3000 and 12,000 feet. Eight new species 

 are described in detail, and figured to show the areolation, shape of leaf, 

 etc. ; the genus Dicranolejeunea is discussed at some length, as also are 

 Frullania gibbosa and F. Mans, figures of their structure being added. 



* Ber. Deutsch. Bot. Gesell., xxxii. (1914) pp. 262-6. 

 t Bot. Gaz., lvii. (1914) pp. 320-3 (2 pis.). 



+ Die Lebemioose. Leipzig: Kuinnier, 1914, Lief. 19, pp. 261-2, 273-336 

 (figs. 81-98). 



§ Traus. Connecticut Acad., xviii. (1914) pp. 291-345 (11 figs.). 





