— 18— 



67. A. cuneatwn L. This species, although not native to 



Jamaica, appears to be naturalized about Cinchona, 

 growing in waste places without cultivation. 

 Hypolepis Bernh. 



68. H. nigrescens Hook. Very common, climbing or trailing 



over bushes and trees at Cinchona. Stem and rachids 

 very prickly. This has an exceeedingly close super- 

 ficial resemblance to Davallia aculeata. (no). 

 Notiiol.lna R. Br. 



69. N. trichomanoides R. Br. Common on dry rocks above 



Gordon Town. The variety subnuda Jenm. collected 

 with the type. (236). 



70. N. ferruginea Desv. With the preceding and much re- 



sembling it. (280). 



( To be continued.) 



A RICH LOCALITY. 



By William Palmer. 



AS I stood upon the few-plank bridge in a little valley near 

 Potomac, Montgomery county, Maryland, on October 7 

 last, a few fronds in a thicket by the roadside attracted my 

 attention, and Dryopteris spintilosa proved to be quite numer- 

 ous. On the other side of the bridge a single plant of Dryopteris 

 Boottii was almost hidden in the bushes, and about eighteen 

 inches away was a plant of Dryopteris cristata, sl species repre- 

 sented by numerous examples for some thirty feet' along the little 

 stream. A hasty examination of the banks revealed Dryopteris 

 spinulosa intermedia in a clump, while Poly 'slic/ium acrostic hoides 

 was common. The woodland non- fruiting form of Dryopteris 

 thelypteris was also common with D. noveboracense near by. A 

 clump of Athryium filix-fcemina occurred here and there and also 

 a few plants of Asplenium piatynenron. A little way from the 

 bank were a few plants of Botrychium Virginiamon and a single 

 one of B. ob lignum. 



This little piece of low woodland is now a cow pasture, and 

 doubtless all these ferns are doomed. The interesting feature of 

 this display is the large number of species of Dryopteris in an 

 area about fifty feet by ten, and especially the plant of D. Boottii, 

 the fourth locality known from the vicinity of Washington and 

 the only one I know of for Maryland. 

 Washington, D. C. 



