492 abstracts: botany 



Some fluctuation in number and size of vegetative branches and 

 in location of the earliest fruiting branch is observed in different loca- 

 tions, on different soils, and under various modes of culture, the habits 

 of branching of Egyptian cotton being governable to large extent thru 

 cultural means. A. M. 



BOTANY. — On the identity of Cyathea multiflora, type of the genus 

 Hemitelia R. Br. William R. Maxon. Bulletin Torrey Club 

 38: 545-550. PI. 35. 1911 (published January 6, 1912). 

 In the original description of Cyathea niultifiora the source of the speci- 

 men was given as Jamaica. It is here shown, after examination of a 

 photograph and fragments of the type that it agrees with none of the 

 many elements commonly included in Hemitelia multiflora but represents, 

 instead, a rather common species of Central America usually known as 

 Hemitelia nigricans Presl. Further data at hand indicate that the cita- 

 tion of Jamaica as the original locality is erroneous. The paper is 

 illustrated by a photograph of the type in the Banksian Herbarium. 



P. C. Standley. 



BOTANY. — Studies of tropical American ferns. No. 3. William R. 



Maxon. Contr. U. S. National Herbarium 16: 25-62. Pis. 



18-34. 1912. 

 The paper consists of seven parts, the first being a revision of the 

 North American species of Hemitelia, subgenus Cnemidaria. Twenty- 

 one species are recognized in this group, 8 of which are new, while one 

 new combination is formed. A key is given for the determination of 

 the species and most of them are fully described. In Further Notes on 

 the West Indian Species of Polystichum, a new species is described from 

 Jamaica, one new combination is formed, and brief notes are given upon 

 other members of the genus. In the third part of the paper the name 

 Pteropsis is adopted in place of Drymoglossum, and a key is given to 

 the three North American species, one of which, from Costa Rica, is de- 

 scribed as new. Under the heading of Two Unusual Forms of Dicranop- 

 teris mention is made of two aberrant specimens which seem to repre- 

 sent a reversion to some generalized ancestral type of the genus. In the 

 fifth article, The American Species of Cibotium, four species are recog- 

 nized, all from Mexico and Central America. The sixth, Two New 

 Species of Notholaena, consists of descriptions of Notholaena leonina and 

 N. rosei, both from Mexico. The concluding article, Miscellaneous 

 Notes and Changes of Name, contains brief notes on miscellaneous 

 species of various genera. P. C. Standley. 



