—39— 



into other regular pinnae just like the original frond. In 

 other words, a part of the frond is bipinnate. This may 

 occur either in the middle or toward the end of the frond. 

 It is not a forking of the rachis but a branching thereof. 

 Habitat: Rocks. Griffin's Corners, X. Y. (J. C. Buch- 

 heister) . 



GROUP IV. 



14. Yar. biiidd-multiiidum Ornery. This was origi- 

 nally published in America as var. cristatum Lowe, and 

 was so given in my List of N. A. Pteridophytes. Nor 

 did I suspect that it was wrong until Air. Druery's set of 

 English varieties was received. The set included both 

 varieties and it was seen at once that what had been called 

 here cristatum was not that variety but was bifido-multi- 

 tiduin. The two are entirely different in their charac- 

 ters. They are nearly of the same size and general con- 

 tour, but the pinnae of bifido-multitidum are like clubs 

 with big knobs on them. The lower edges of the pinnae 

 are nearly straight. The outer end is enlarged and blunt 

 with a couple of blunt lobes, while the upper edge half 

 way to the mid-rib has one to three more blunt lobes, 

 and the mid-rib at the end of the frond is bifid or flabel- 

 late, running out into other lobes. But these terminal 

 lobes are always blunt and bifid. This differs from 

 cristatum decidedly, as the ends of the pinnae in that, al- 

 though split and somewhat enlarged, lack the big lobes, 

 while the end of the frond is more delicate and graceful. 

 I have seen no American specimens of cristatum, and 

 Mrs. Britton's few words in regard to it evidently indi- 

 cate the variety multffidum. Habitat: Rock City, 'Dutch- 

 ess county, N. Y. (Chas. A. Coons, also Prof. C. H. 

 Peck). 



15. Yar. Churchicc var. nov. When this plant was 

 found it contained only two fronds, neither of them 

 fruited, but as nearly alike as two peas. Following is a 

 description of them : Rootstock not seen. Frond 17 centi- 

 meter long, stipe 9 centimeters, slender, naked, channeled, 



