258 



on the Tucquan Creek several miles from its mouth. In 1868 

 at a point on the Octoraro Creek, near Nine Points, it was col- 

 lected by Dr. A. P. Garber. On the ist of April last, while bot- 

 anizing along the Pcqiica Creek with my friend, Mr. A. A. 

 Heller, I collected this rare and beautiful fern for the first time. 

 Since then I have collected it at four new stations, at two of 

 which it is quite rare, while at the other two stations it is remark- 

 ably plentiful. * - . 



On May 21st, in a Jeep and wild ravine near Smithville, which 

 was never explored, I found great quantities of A. pinnatifuhim, 

 Nutt. growing in the crevices of the high cliffs. Then on June 

 26th, while collecting along the Suscpichanna several miles above 

 Safe Harbor, in a ver\' rocky ravine, I unexpectedly came upon 

 it. Both here and at Smithville there is one spot where a pecu- 

 liar form grows. The frond is tu^o to three times broader in pro- 

 portion to the length than in the common form, and regularly 

 divided to the rachis almost to' the apex, tlie pinn.x being ovate 

 in outline. I started out on July 2 1st to collect specimens at the 

 stations given by Prof. Porter and Dr. Garber. Somehow I 

 failed to find either, but discovered a wqw station on the cliffs of 

 the Octoraro about three miles east of Prof Poller's locality and 

 several miles west of that of Dr. Garber. The last station at 

 which I have collected it is, on the rocks at the mouth of the 

 Tucquan Creek. -At the localities where it grows so plentifully 

 it varies much both in size and form. The fronds vary in length 

 from two to twelve inches, and in width from one-half to two 

 inches. Many of my specimens have long, sharp lobes at the base 

 of the frond, and in some they run all the way up to the apex, 

 instead of the usual rounded lobes. One very fine specimen, 

 three of whose fronds are almost one foot long, has one frond 

 taking root at the apex, which gives rise to four small fronds. 



John K. Small. 



Lancasicr, Pa. 



A new North American Ujeunea. 



■ ]^v Ta^ciex M. Underwood. 



Y 



Among the extensive hepatic collections made by Professor 

 John Macoun in British Columbia during iSSq-'qo, a single 

 Lcjeuiica occurred, which was referred to Dr. Spruce, who has 



