Anatomie. — Biologie. 531 



Tischler, G., Ueber eine merkwürdige Wachsthums- 

 erscheinung in den Samenanlagen von Cytisus 

 Adami Poir. (Berichte der Deutschen botanischen Gesell- 

 schaft. 1903. Bd. XXI. p. 82—89. 



Verf. schildert des genaueren die histologischen Verhält- 

 nisse bei der Entwicklung der Samenanlage von Cytisus Adami 

 Poir., welche sich nach der Mittheilung von Caspary im 

 Jahre 1858 monströs ausgebildet zeigt. m. Koernicke. 



Weill, G., Note sur la repar tition des appareils secre- 

 teurs dans /' Hypericum calycinum. (Journal de Botanique. 

 anne'e XVII. 1903. p. 56.) 



Les canaux secreteurs de /'//. calycinum sont tous capables 

 de se ramifier. L'auteur decrit plus particulierement ceux de 

 la moelle: Au milieu d'un entre-noeud il n'existe qu'un canal 

 central. Vers le haut ce canal se divise en deux branches 

 dont l'une se termine en pointe mousse dans le noeud et dont 

 l'autre passe dans l'entre-noeud superieur. Au noeud apparaissent 

 en outre une poche isolee de chaque cöte. Lignier (Caen). 



CROSSLAND, C, Note on the Dispersal of Mangrove 

 Seedlings. (Annais of Botany. Vol. XVII. 1903. No. LXV. 

 Notes, p. 267—270. Fig. 16.) 



This note describes the way, in which mangrove seedlings 

 are able to take root in hard coral limestone, such as that on 

 the coast of Zanzibar. Their centre of gravity is adjusted 

 in such a vvay that the seedlings float with the pointed, thick 

 end lowermost and, when the tide recedes, this end commonly 

 remains in one of the numerous crevices in the limestone rock. 

 The ripples of further tides cause oscillation of the tip and 

 consequently the seedling slowly bores its way into the rock- 

 surface and the embryo is ultimately planted in a hole, the 

 diameter of which is only little larger than itself. 



F. E. Fritsch. 



MARLOTH, R., Some recent observations on the biolog y 

 of Roridula. (Annais of Botany. Vol. 17. January 1903. 

 p. 151 — 159.) 



The author briefly describes a shrubby insectivorous plant, 

 Roridula, belonging to the Droseraceae, which is covered with 

 glandulär outgrowths resembling the tentacles of Drosera. 

 He does not give any account of the working of the mechanism 

 but says that dead insects abound upon the surface of the plant. 

 Each shrub is infested by a species of Crab-spider which 

 is in some way protected from the action of the secretion of 

 the tentacles which preys upon the captured insects. The 

 author describes the process of pollination in the plant. 



Reynolds-Green. 



34* 



