ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 369 



and western type occur here, though absent or rare in the rest of the 

 Vosges. Many new stations for the species and forms are revealed by 

 the author. 



Ferns of the Canary Islands.* — J. Pitard and L. Proust give an 

 account of the ferns of the Canaries with the distribution of each species 

 within the archipelago. They enumerate forty ferns and three fern- 

 allies. 



New Hybrids of Dryopteris in North America.f — R. C. Benedict 

 gives an account of some new hybrids of Dryopteris in the United 

 States. Eleven hybrids had previously been reported in the country — 

 one in Aspleniwm, one bigeneric and compounded of Asplenium and 

 Camptosorus, and the remaining confined to the genus Dryopteris. Six 

 species of Dryopteris appear to hybridise more or less readily with one 

 another, viz., I). Clintoniana, D. cristata, D. Goldiana, D. intermedia, 

 I), marginalis, D. spimdosa. Of these the possible number of pairs is 

 fifteen ; and nine of these have been made known by the researches of 

 P. Do well, M. Slosson, and others : four are described in the present 

 paper ; others are promised ; and only one, T). Goldiana x spimdosa, 

 remains to be discovered. The following features have to be closely 

 studied in the discrimination of these hybrids : (1) intermediate 

 character ; (2) sterility, abnormality, and greater vigour ; (3) distribu- 

 tion. 1. Such points as general habit of the plant, shape and cutting 

 of the pinnae, etc., scales of the stipes, cell structure and glandularity of 

 the indusia, have to be taken into account. 2. Very rarely indeed have 

 mature spores been found on the hybrids. Correlated with the sterility 

 is usually a greater vegetative activity, the plants being larger, or the 

 fronds abnormal and irregular. 3. As to distribution, the hybrids 

 occur now and again in damp woods with the parent species. It is 

 conceivable that the hybrids, owing to their great vigour, might survive 

 the destruction of the parent species ; and their establishment in a 

 given locality would then appear difficult of explanation. 



Ferns of Borneo.J — E. B. Copeland publishes descriptions of new 

 ferns collected in Borneo by Foxworthy, Hewitt, Brooks, and Young. 

 Macroglossum and Phanerosorus are new genera. The former is allied 

 to Angiopteris ; and Phanerosorus is created for the reception of 

 Matonia sarmentosa Baker. Thirteen new species are described. 



New Species of Cyathea from Asia.§ — E. B. Copeland describes 

 seven new species of Cyathea collected in the Philippine Islands and the 

 South of China. He discards as unsatisfactory the old division of the 

 tree-ferns into three genera — Cyathea, Hemitelia (or Amphicosmia), and 

 Alsophila — since the absence or presence of the indusium is inconstant. 

 He therefore maintains only Cyathea. 



New or Interesting Malayan Ferns. |] — C. R. W. K. Van Alderwerelt 

 van Rosenburgh gives an account of some new or interesting Malayan 



* Les lies Canaries. Paris : Klincksieck, 1908, pp. 402-14. 



t Bull. Torrey Bot. Club, xxxvi. (1909) pp. 41-9. 



t Philippine Joum. Sci., iii. (1908) pp. 343-51 (8 pis.). 



§ Tom. cit., pp. 353-7. 



|| Bull, du Dep. Agric. Indes Neerlandaises, xviii. (1908) 27 pp. (8 pis.). 



Jane 10th, 1909 2 c 



