— 7— 



It is very desirable to get specimens of the plants referred to 

 ripariabyDr Engelmann, from Uxbridge, Mass., and Brattleboro, 

 Vt., for comparison. The locality of Mt. Desert for I. riparia, 

 given by Red field & Rand is invalid, the plant being a large form 

 of Tuckermani, which 1 call var. boreale. It seems strange this 

 plant is so abundant at one end of the pond and not found at the 

 other; also that it should be found at two localities so far apart as 

 New Hampshire and Vancouver Island and not in the intervening 

 space. As soon as competent collectors begin to hunt for Isoetes, 

 -however, it will doubtless be found common. 



I take pleasure in dedicating this species to Mr. Raynal 

 Dodge. 



DORSET FERNS. 



I WAS greatly interested in Dr. Underwood's article in the 

 October Bulletin, in regard to the Ferns of Scolopendrium 

 Lake. It has stimulated me to write an account; of a place in 

 Vermont, which I believe to be equally remarkable. I believe 

 this state is generally conceded to be one of the most profitable 

 for students of Ferns. Certainly Dorset is both profitable and in- 

 teresting. To be brief, let me say that at my boarding place 1 was 

 known as the woman who found ferns, and requests were made to 

 me to bring them in for general inspection. In response, one day, 

 I said I would go for a walk, and in two hours I would bring 

 home more than thirty varieties. Accordingly I started out to 

 fulfill my promise, and at the time specified, I was on hand with 

 thirty-seven varieties. I will name them in the order in which 

 they occur in Grays Manual, using also his nomenclature, as I 

 am most familiar with that. 



Polypodium vulgare, Adiantum pedatum, Pteris aquilina, 

 Asplenium Trichomanes, A. ebeneum, A. angustifolium, A. 

 thelypteroides, A. filix foemina, Camptosorus rhizophyllus, 

 Phegopteris polypodioides, P. Dryopteris, Aspidium Thelypteris, 



A. Noveboracense, A. spinulosum intermedium, A. s., var. dila- 

 tatum, A. cristatum, A. c, var. Clintonianum, A. Goldianum, A. 

 marginale, A. acrostichoides, A. aculeatum, var. Braunii, Cys- 

 topteris bulbifera, C. fragilis, Onoclea sensibilis, O. Struthiopteris 

 Woodsia Ilvensis, Dicksonia pilosiuscula, Osmuhda regalis, O. 

 Claytoniana, O. cinnamomea, Botrychium lanceolatum, B. matri- 

 carisefolium. B. ternatum, var. obliquum, B. t, var. dissectum, 



B. Virgmianum, B. V., var. gracile, Ophioglossum vulgatum. 



