—45— 



thirds as wide as the frond is long, making the outline triangular. 

 There are about ten pairs of pinnae as against the fifteen or more 

 pairs in microphylla and the lower pinnae are tri-pinnate with 

 deeply lobed pinnules. All of this convinces us that this is the 

 Chcilanthcs Moritsiana of Kuntze and it is therefore proposed 

 that it be admitted to our fern flora and no longer regarded as a 

 form of C. microphylla. The specimens agree perfectly with the 

 figure of C. Moritziana in "Species Filicum/' Vol. 2. 



A PRELIMINARY LIST OF PTERIDOPHYTA COLLECTED 

 IN DADE COUNTY, FLORIDA, DURING 

 NOVEMBER AND DECEMBER, 1903. 



By A. A. Eaton. 



Having been sent by the Ames Botanical Laboratory to col- 

 lect orchids in South Florida in November and December last, 

 I improved the opportunity to make a collection of ferns and 

 their allies, and was rewarded by several very good finds, en- 

 riching our flora by the addition of several species new to the 

 United States and the rediscovery of some others which have 

 been considered quite rare. Besides those given below, there are 

 a few which are yet in doubt, some of them probably undescribed. 



I was accompanied on part of my trips by Dr. John K. 

 Small and Mr. Joel J. Carter, and on others by Mr. Chas. T. 

 Simpson and Mr. John Soar. To the latter gentleman., a nursery- 

 man of Little River. Fla.. I am indebted for some of the best finds, 

 and to Mr. Simpson for Odontosoria clavata. Mr. Soar took 

 pains to collect living plants of all the ferns found, and people 

 desiring such would do well to communicate with him. A fully 

 annotated and illustrated list is in process of preparation at th? 

 Ames Botanical Laboratory. 



Acrostickum aurcum L. Brackish mangrove swamps. 



Acrostichum lomarioidcs Brackish and fresh mangrove swamps. 



Adiantum tencrum Swartz. Lime-sinks in hammocks. 



Aneimia adiantifolia Swartz. Rough lime-rock, mostly not far 

 from the borders of the woods. 



Aspidiuni trifoliatum Sw. Lime-sinks in hammocks. 10-14 

 miles south of Cutler. 



Asplexium Biscaynianum (D. C. Eaton.) {A. rhizopliyllum 



