266 COMMON CANADIAN WILD PLANTS. 



B. 0. einnamo'mea, L. (Cinnamon Fern.) Fertile fronds 



distinct from the sterile oites, "cohtraoted, twice-pinnatu, 



covered Tv^ith cinnamon-coloured sporangia. Sterile fronds 



rusty-woolly when young, smooth afterwards, once-pinnate, 



the pinnse deeply pinnatifid. The long, sterile fronds in a 



. cluster, with the fertile ones in the centre. — Low grounds. 



17. BOTKYCII'IIIM, Swartz. MooKWOET. 



* Sterile portion of tlie/rond notflealiy. 



1. B. Virginla'num, Swartz. (See Figs. 270 and 271, and 

 accompanying description.) — Eioh woods everywhere. 



* * Sterile xjortion of ilte frond more or less fleshy. 

 ^ Sterile segment sessile or nearly so, 



2. B. Luna'Fia, Swartz. sterile segment very fleshy, 

 nearly sessile, oblong, simply pinnate, with 5-15 lunate or 

 fan-shaped fleshy divisions. Fertile segment panicled, 2-3- 

 pinnate. — Hare. 



3. B. sim'plex, Hitchcock. Fronds small, seldom 6 inches 

 high, the sterile segment borne nearer the middle of the plant, 

 short-petioled, fleshy, simple, and roundish, or pinnately 

 lobed, with roundish lobes decurrent ou the broad and flat 

 indeterminate rhaohis. Veins all forking from the base. — 

 Atl. Prov. chiefly. 



4. B. laneeola'tum, Angstroem. Frond 3-10 inches high. 

 Sterile pari closely sessile at the top of tlie slender common 

 stalk, very slightly fleshy, triangular, ternately twice-pin- 

 natiUft, with acute, toothed lobes. Veinlets branching from 

 the continuous midvein. The fertile part twice- or thrice- 

 pinnate. — Atl. Prov. 



5. B. matriearisefO'lium, Braun. Eesembling the pre- 

 ceding, but the sterile segment not quite sessile, somewhat 

 fleshy, pinnate to twice-pinnatifid, with ojitiise lobes. Mid- 

 vein broken tip into forking veinlets. — Damj^ woods, Atl.' 

 Prov. chiefly. 



-^ -^ Sterile segment long-stalked. 

 .6. B. terna'tum, Swartz. Very fleshy, 4-16 inches high, 

 sparingly hairy. Sterile segment attached near the base of 



