778 - SIM MARY OF CURRENT RESEARCHES RELATING TO 



identity with A. alternans there seems to be no douht. But how an 



Indian fern should start a colony in Arizona is a dec]) mystery. Clute 

 seeks for an explanation of the matter, and cites other instances and the 

 theories of multiple origin and of wind-distribution. 



Pteridophytes of Schleswig-Holstein.* — P. Junge gives a detailed 

 account of the Pteridophytes of Schleswig-Holstein. These comprise 

 thirty-nine endemic species, which tbe author has investigated in the 

 most elaborate way, recording and describing every variety, form, sport, 

 and hybrid known in the province, and giving the full distribution. 

 Where necessary he has inserted text figures. He also devotes a chapter 

 to distribution, and another to critical notes. 



American Ferns. f — L. F. Kimball gives an account of about two 

 dozen Pteridophytes gathered in San Diego county, California, with 

 some notes on their habitats and characters. Adiantum capillus-veneris, 

 found in 1902 under the flume that brings water from the mountains to 

 San Diego across an arid, sandy country, has already advanced eight 

 miles along the flume, and grows wherever there is sufficient shade. 

 Ophioglossum californicum and Gymnogramme triangularis are the rarest 

 species. Pell sea ornithopus varies much in the wild state and under 

 cultivation ; it requires investigation. 



A. Prescott % describes the walking fern (Camptosorus rhizophyllus), 

 and one of its habitats. 



W. N. Clute § publishes some notes on variations of form sometimes 

 met with in Nephrodium marginale. 



Under the title Pteridographia he gives || notes on the following sub- 

 jects : Forked Liquorice Fern, Sex in the Ostrich Fern, Death of 

 J. H. Hart, Cambium in Ferns, Fragrant Bracken, Abnormal Lyco- 

 podiums. 



Bornean Ferns. IT — E. B. Copeland publishes descriptions and figures 

 of twenty new ferns collected in Borneo, mostly by C. J. Brooks ; and 

 has issued two previous papers on the same subject in the same journal. 

 The specimens were gathered in Sarawak. Copeland calls attention to 

 Poli/podium Tieracleum, and discusses its relationship with Drynaria. 

 He draws up a key to illustrate in brief the characters of the minor groups 

 in which he prefers to arrange the allied species without taking them 

 out of the genus Polypodium. 



Ferns of Perak.** — H. N. Ridley gives a list of sixty-six ferns and 

 eight Lycopodiacea? collected during an expedition to Temengoh, in 

 Upper Perak. One variety is new. 



Philippine Ferns.ft — E. B. Copeland gives an account of some new 

 or interesting Philippine ferns received from various collectors. Five of 



* Beih. Jahrb. Hamburg Wiss. Anstalt., xxvii. (1910) pp. 49-245 (figs.).' 



+ Fern Bull., xix. (1911) pp. 42-6. 



X Fern Bull., xix. (1911) pp. 48-9. 



§ Fern Bull., xix. (1911) pp. 50-2 (figs.). 



I 1 Fern Bull., xix. (1911) pp. 53-9. 



1 Philippine Journ. Sci., vi. (1911) pp. 133-41 (14 pis.). 



** Journ. Straits Branch R. Asiat. Soc, 1910, pp. 118-22. 



+ + Philippine Journ. Sci., vi. (1911) pp. 145-8. 



