526 100. FILICES. 



triangular, never so on older and perfect ones. Indusiutn with 

 marginal glands. The largest scales of the full-grown plant 

 should be examined. " Spores winged and crested." [Var. 

 lepidnta (Moore), having the rachis and its br. with numerous "broad 

 cuspidate and narrow piliferous scales," is said to have been found in 

 Yorks.] L. collina (Newm.) has a triangular-ovate-prolonged 

 frond and ovate blunt bluntly mucronate-serrate pinnules. N. 

 223. L. glandulosa (Newm.) has a broad lanceolate frond 

 covered with stalked glands beneath and the scales on the stipe 

 often nearly without the dark centre. Deak. FL Brit. f. 1612. 

 [Perhaps a hybrid betvv. sp. 7 & 8.: Woods, banks, &c. P. VIII. 

 IX. E. S. I. 



9. L. ce'mida (Brack.) ; frond triangular or triangular-ovate 

 bipinnate, lower pinnae unequally triangular lowest pair longest, 

 pinnules prolonged-triangular with a narrow attachment pinna- 

 tifid or pinnate inferior lower ones largest, segments spinous- 

 serrate, stipe clothed with long narrow laciniate \-colouredscales. 

 H. F. 20. Nephrodium fcenisecii Lowe ! L. reiiirvn N. 225. 

 Frond 1 2 feet long ; 'the lower pinnae much the largest. 

 Pinnules and segments concare above. Stipes, rachis, and fronds 

 with many globose sessile glands. Sweet-scented. Rock v shady 

 places. P. VIII. IX. E. S. I. 



5. POLYS'TICHUM Eotli. 



1. P. Lonchitis (Roth) ; fronds rigid linear pinnate, pinnae 

 notlobed serrate spinous their base auricled above oblique below. 

 N. 163. H. F. 9. E. B. 797. Stipe very short. Fronds 

 narrow, very rigid and leathery. Pinnae overlapping and 

 twisted (most in the Irish, much less so in the Welsh plant), 

 lower ones usually auricled both above and below. Young 

 simply pinnate fronds of the next species are often much like 

 this plant. Alpine rocks. P. VII. Holly Fern. E. S. I. 



2. P. aculedtum (Roth) ; fronds rigid linear or lanceolate bi- 

 pinnate, pinnules obliquely decurrent. N. 169. H. F. 11, As- 

 pidum lobatwn Kunze. A. aculeatum and A. lobatum Sm. 

 Stipe usually short. Frond 1 2 feet high. First upper 

 pinnule of each pinna longer than the others, its lower side 

 (next the main rachis) usually nearly straight, its upper acutely 

 auricled and forming an acute angle with the lower and with 

 the partial rachis at the point of attachment. In young plants 

 the pinnae are serrate or pinnatitid or with one or more pin- 

 nules distinct. A few of the lowest pinnules are often slightly 



