52 SUMMARY OF CURRENT RESEARCHES RELATING TO 



montanum in Ohio, and describes a new station — namely, a remarkable 

 rock, in the Mahoning River. A. Prescott * writes of the Grape ferns 

 (Botrychium), and briefly sketches the morphology and habitat of 

 B. obliquum and its varieties. F. J. A. Morris, f writing from Port 

 Hope, Ontario, shows how little foundation there is for the common 

 impression that Ophioglossum vulgatum is rare and local. If sought for 

 in suitable places the species is abundant, especially in upland meadows, 

 and is often associated with Nephrodium thelypteris. E. J. Winslow % 

 records the occurrence of Botrychium lanceolatum in Vermont at an 

 elevation of 1500 feet, and almost on the Canadian frontier. 0. E. 

 Jennings § records a new locality, near Iviukiang in Central China, for 

 Hymmophyllum denticulatum, and sketches its distribution as previously 

 known — namely, the Indo-Malayan region. W. N. Clute || gives further 

 particulars and figures of Polystichum acrostichoides f. multi/idum. He 

 also supplies a resume of E. B. Copeland's observations on humus- 

 collecting and mvrmecophilous ferns in the Philippines ; and a bio- 

 graphical notice of Thomas Minot Peters, a senator and judge in 

 Alabama, a botanical colleague of Ravenel and Curtis, and discoverer of 

 the rare Trichomanes Petersii. In a chapter headed " Pteridographia " % 

 is a series of notes on Asplenium montanum, Osmunda cinnamomea, 

 Schizsea pusilla, Poly podium vulgare auritum, on a form of the Lady- 

 fern with red stipes, etc. 



Ferns of the Dutch West Indies.** — I. Boldingh includes in his 

 Flora of the Dutch West Indian Islands, a list of the Pteridophytes 

 amounting to fifty-two species. The islands explored were St. Eustatius, 

 Saba, St. Martin, and also St. Croix. The collections examined are 

 those of Suringar, van Grol-Meyers, Lionaron, and Boldingh. Altitudes 

 and general distribution are given. 



Spruce's South American Ferns. ft — E. Rosenstock publishes a series 

 of thirty-eight descriptions of new species and varieties of ferns collected 

 by the late Richard Spruce on the Amazons, in East Peru and in Ecuador, 

 founded on specimens preserved in the herbarium of Prince Roland 

 Bonaparte. About 500 of Spruce's specimens were thus submitted to 

 Rosenstock for determination. Though many of them have been named 

 and described by Hooker, Baker and others, yet a number of them have 

 never been determined, and some in the light of modern research are 

 found to differ from the species to which in the past they have been 

 referred. 



Ferns of the Congo.JJ — E. De Wildeman publishes a list of the 

 Pteridophytes of the lower and middle Congo, amounting to 103 species 

 and two varieties. Among them are eight new species described by 

 H. Christ. 



* Fern Bulletin, xvii. (1009) pp. 100-2. + Tom. cit., pp. 102-5. 



% Tom. cit., p. 105. § Tom. cit., pp. 106-7 (fig.). 



|| Tom. cit., pp. 99-100 (pi.) and pp. 107-12. f Tom. cit., pp. 112-20. 



** Leiden: Brill, 1909, pp. 1-12. 

 tf Fedde's Repertoriiun, vii. (1909) pp. 289-310. 

 XX Ann. Musee Congo Beige, Bot., ser. 5, iii. (1909) pp. 23-41. 



