SEPTEMBER. 363 
upper lip cloven in two, and narrow, lower one in three lobes, 
middle one the largest. 
Marrusium vuLearE. White Horehound. Waste places 
and way-sides, frequent in England. About a foot high, 
bushy: everywhere covered with a white, thick woolly sub- 
stance, leaves roundish, toothed, and wrinkled. Flowers 
small, almost white, in crowded whorls. 
CRYPTOGAMIA. FILICES. 
FoLIACcEs, FILICEs. 
BLECHNUM. (Harp Ferry.) 
Generic Character. Seeds in cases which are long and narrow, 
parallel, and on each side the rib of the leaflet. 
BLEecHNUM BOREALE. (Lomaria spicant.) (Plate XX. 
Fig. 77.) Hard Fern. A common species of Fern, especi- 
ally in a poor light soil, on heaths and commons. It is one 
of those species that has both fertile and unfertile leaves or 
fronds; that is, the fertile have seeds at the back, and some 
are always without. The seed covers the under side of the 
little leaflets in the fertile frond, as they are very narrow, 
though the barren leaf is broader ; they are only once divided, 
