LASTREA FILIX-MAS. 



279 



species. All its parts are diminutive, the teeth of the lobes 

 remarkably soj but ia other respects its growth is of the 

 ordinary size. 



Mapplebegkii, Lowe. — Found in two places near Grasmere, 

 in the English Lake District, by Mr. J. E. Mapplebeck, of 

 Bromsgrove, in August, 1862. The fronds are twelve inches 

 or more in length, polydactylous, and fork into two distinct 

 fronds near the base, and frequently the basal pinnae are 

 divided in the same manner. The apex of the pinnse cristate, 

 as -well as the apex of the frond. My thanks are due to Mr. 

 Mapplebeck for fronds. 



Fig. 228.— Pinnte. 



WiNSTAXLEYi, Loioe. (Fig. 228.) — Raised from spores at 

 Highfield House from cristata, yet differing from that variety 

 in several respects. The fronds are long and narrow — twenty 

 inches in length, and only three inches and a half in width; 

 slightly widest in the middle, narrowing rapidly to the apex, 

 and slightly to the base; the apex of the frond is furcate and 

 cristate. It differs from cristata in having a tufted crest, 

 which forms a compact rounded head, all the margins of 

 which are deeply cut. The pinnee are close, alternate, and 

 narrow, being widest at the base. Pinnate, the segments being 

 deeply cut near the base, the basal inferior lobe being the 

 largest. The margins of the lobes finely dentate. Sori confined 

 to the upper half of the frond, a single row on either side 

 the midrib, and much smaller in size than in cristata. The 

 pinnae near the base of the frond are dilate, much branched, 

 but not tufted; and only shew a tendency to be cristate. An 

 elegant and more slender form. 



