ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 313 



the cortical parenchyma, which may or may not be accompanied by 

 elongation, (ii) the local delignification of the sub-epidermal sclerenchyma, 

 (iii) a deposit of tannin in the cell-walls in the affected area. 3. Wound 

 reactions in the tissues composing the vascular strands are rare, and 

 where they do occur are confined to the starch sheath and conjunctive 

 parenchyma, which thicken and may elongate and divide. 4. The 

 results obtained are confirmatory of those produced experimentally. 



Pteris quadriaurita and its Allies.* — G. Hieronymus gives an 

 account of Pteris (juadriaurita and nineteen of its allies from the 

 Asiatic, Malayan and Polynesian regions, with long and detailed 

 descriptions of the species and critical remarks. Eleven of the species 

 are new, and much care is taken to clear away the confusion that has 

 prevailed in the past concerning the members of the group. 



Bryophyta. 

 (By A. Gepp.) 



Gemmae of Pterigynandrum filiforme.f — C. Warnstorf pubhshes 

 a note on the vegetative propagation of Pterigynandrinn filiforme. In 

 1905 he notified that he had observed easily detachable branchlets 

 (" brutastchen ") which presumably serve as a means of propagating 

 the species ; and further that he had seen pyriform gemnife (" brut- 

 korper ") which he believed to belong to the same species. He has 

 never seen these " brutastchen " again ; but he is in a position to 

 confirm the occurrence of " brutkorper " in the species ; and he describes 

 and figures them as oblong to clavate rows of two to four cells, brown, 

 with the basal cell hyahne, and borne at the tips of short small fascicles 

 of branches, arising in the axils of the leaves. 



Cratoneuron filicinum.l — L. Dietzow discusses in some detail the 

 disputed systematic position of Cratoneuron fiUcinum. Described as 

 Hypiium by Linnasus, it has in recent times been referred by Roth, 

 Loeske and Warnstorf to Cratoneuron, and by Loeske and Brotherus to 

 Hygroamhlystcgium. In 1911 Monkemeyer replaced it in Cratoneuron, 

 by reason of its stout leaf-structure, its paraphyllia, etc., and insists 

 upon its great variability ; further he showed, in opposition to Limpricht, 

 that it does have plicate leaves and that it may have weakly papillate 

 cells (which Limpricht believed to occur only in C. decipiens). The 

 present author confirms Monkemeyer in these details, and describes a 

 very papillose specimen from a sun-baked situation in East Prussia. 

 The function of the papillae he explains as being to protect the cell- 

 contents from excessive sunlight. All the varying papillate forms he 

 groups under the one variety verrucosa, with two extreme forms scabrida 

 and pseudopapiUosa. 



* Hedwigia, Iv. (1914) pp. 325-75. 

 t Hedwigia, Iv. (1914) pp. 378-80. 

 X Hedwigia, Iv. (1914) pp. 277-9. 



