194 



BRITISH FERNS 





Fig. 218. P. ang. acutilobum. 



Acutilobum (Fig. 218). — Found near Barnstaple by Mr. C. 

 Jackson ; this represents a section, embracing a number of very 

 fine forms, found bv R. J. Gray, Mrs. Hartley, W. H. Phillips, 

 G. B. Wollaston, Dr" Allchin, Mr. Choule, Mr. Dadds, F. Foot, and 

 Mr. Wells ; the pinnules are long and slender, and very acutely 

 pointed, and the varieties are generally proliferous. The term 

 " acutilobum " has been substituted for " proli/erum," so many other 

 forms bearing bulbils. (See Appendix No. LXXVI). 



Acuto-gracile (Plate XXIX). — Found near Ottery St. Mary by 

 Mr. G. B. Wollaston ; a dwarf form with acutely pointed pinnules. 



Alatum (Plate XXIX). — A remarkable form, the normal wedge- 

 shaped bases of the pinnules being much widened at point of attach- 

 ment so as to form a continuous wing connecting them. 



Brachiatum. — Found in Devon by Mr. Hillman ; this form is 

 very wide at the base, the lower pinnas expanding almost into 

 fronds ; several types of this have been found by others forming 

 a very distinct section. (See Appendix No. LV and LVII) . 



Brachiato-cristatum Keall. — Fronds branch into three from 

 the bottom, forming a trident, such terminal bearing a bunch crest. 



Capitosum. — Found by Mr. Moly at Tatworth ; narrow- fronded 

 grandiceps. 



Conchatum. — Found by Mr. Moly at Hawkhouse; 

 pinnules. 



shell-like 



