Some Reprints Recently Received 23 



D. eriocaulis, furnishes another example of American- 

 African distribution, being found only in West Africa 

 and eastern Brazil. 



Christensen, Carl Filices Purdomianae. Bot. Gaz. 

 56: 331-338. Oct. 1913. 



The article contains a list of sixty-three ferns collected 

 by Air. Wm. Purdom in the province of Shensi in northern 

 China, in 1910, in connection with the expedition sent 

 out by the Arnold Arboretum. The collection is of 

 especial interest because it includes numerous temperate 

 species, some of which occur also in temperate North 

 America. It is also of especial interest because it un- 

 doubtedly includes a number of Chinese species which 

 would grow here with us and add to our lists of hardy 



ferns for fern gardens. 



The following species of our flora occur in the list: 

 Adiantum pedatum, Asplenium adiantum nigrum, A. 

 Trichomanes, Athyrium acroxtichoides, A. fiUx femina, 

 Cryptogramma Stelleri, Dryopteris Dryopteris (D. Lin- 

 naeana) D. Phcgopteris, Pohjstichum Bramii, Lycopodium 



annotinum. 



Apparently the collecting trip extended into tropical 

 as well as temperate regions, since the list includes a 

 considerable proportion of tropical species. Six new spe- 

 cies are described and a number of other species listed 

 as new to the region or otherwise noteworthy. The 

 new species are distributed as follows: Athyrium, Cheil- 

 anthes, Dryopteris (2), Mattcuccia, and Pohjstichum. 

 The Matteuccia is described as intermediate between 

 M. Struthiopteris and M. oriental is. 



Tidestrom, Ivar. Botrychium virginianum and it- 

 forms. United States National Museum 16: £W- 



303. pi. 102. 29 Dec. 1913. 



The writer discusses the variations of Botrychium vn- 

 ginianum in its broadest sense and concludes that two 



