260'' COMMON CANADIAN WILD PLANTS. 



3. PTE'KIS, L. :^RAKE. BnACKES. 

 p. aquili'na, L. Sfipe stout and erect. Frond large and 

 divided into 3 large spreading divisions at the summit of tho 

 stipe, the branches twice-pinnate, the pinules margined all 

 round with tho indusium. — Common in thickets and on dry 

 hillsides. 



, 4, VKhlJEA, Link. Cliff-brake. 



1. P. gra'eilis, Hook. Fronds 3-6 inches high, slender, 

 of few pinnse, the lower ones once- or twico-pinnatifid into 

 3-5 divisions, those of the fertile fronds narrower than those 

 of the sterile ones. Stipe polished, brownish, darker at tlie 

 base. — Shady limestone rocks ; not common. 



2. P. atFOpurpu'rea, Link. Larger than the last, 6-15 

 inches high, the stipe darh-purple and shining. Fron4 

 pale, once- or (below) twice-pinnate, the divisions broadly 

 linear or oblong (or the sterile sometimes oval), stalked at 

 the base. Stipes clustered. — Dry rocks. 



5. Aim'LE'MliIH, Ij. Spleenwort. 

 * l7tdusiitm straight^ atlaclied to the upper side of the vein. 



1. A. Triehom'anes, L. A very delicate little fern grow- 

 ing in tufts on shaded cliffs. Fronds 3-6 inches long, linear 

 in outline, pinnate, the little pinnse oval and unequal-sided, 

 about -J of an inch long. The stipes thread-like, purplish- 

 brown and shining. This species is evergreen. 



2. A. j^i'ride, Hudson. Eesembling A. Trichomanes, but 

 less rigid, and the stipe brownish at base, becoming green 

 upwai-ds. Pinn^B roundish-ovate or ovate-rhomboid, short- 

 stalked, crenately toothed. — Shaded cliffs, Atl. Prov. chiefly. 



3. A. ebe'neum, Ait. Evergreen. Fronds 9-18 inches 

 high, upright, linear, oblanceolato in outline, fertile ones 

 much the taller, simply pinnate. Pinnse mostly alternate, 

 sessile, finely serrate, the base auricled on the upper or both 

 sides. Stipe and rhaohis. blackish-purple and shining. — 

 Eocky open woods, Ontario. 



'1. A. thelypteroi'des, :\fichx. Not evergreen. Fronds 

 3-3 feet high, pinnate, the pinnfe linear-lanceolate iji outline, 



