FILL I.S 



285 



r*r 



418. Osmunds Clay- 

 toniana. 



" '"^'>&' 





W.i i ismunda cinnamoi 



1. OSMtTNDA. Flowebing Pern. 



Strong ferns from stout creeping rootstocks, with large pinnate fr Is: 



sporangia covered with interwoven ridges, but wanting tin- elastic ring of 

 in' - 1 ferns, inhabitants of bogs and wet wood--. 



0. regalis, Linn. Royal fern. Top of tin- frond contracted into a 

 fruiting panicle: frond 2-pinnate, the pinns oblong, obtuse, and nearly entire. 



0. Claytoniana, Linn. 

 Pig. 118. Two to four pairs 

 of pinna- near the middle of 

 the frond contracted into 

 fruit-bearing parts : pinns 

 linear-lanceolote and acute, 

 deeply lobed. 



0. cinnamomea, Linn. 

 i 'innamon < m . Pig. H9. 

 Some fronds entirely con- 

 tracted into fruiting parts, 

 and these cinnamon color 

 (whence the vernacular name): sterile form with the frond-- much lik<- 

 those of O. Calytoniana in Bhape excepl more acute at top. 



2. 0N0CLEA. Sensitive Fern. 



Mostly rather strong ferns, with broad sterile fronds and with the fer 

 tile fronds rolled into hard contracted fruiting bodies, which remain aftei 

 the sterile leafy frond-, have perished: sporangia itl> an elastic marginal 

 ring of cells. Bogs and old Bpringy fields. 



0. sensibilia, Linn. Sensitivi fern. Brake. Pig. 310. Sterile fr I 



triangular-ovate, the pinna? not extending quite to the midrib and toothed: 

 fertile frond usually lower than the other (1-2 ft. high), with a few pii 

 ( lommon In old pastures. 



0. Struthiopteris, Boffin. Ostrich fern, Verj tall (2-5 ft.), the sterile 

 fronds narrow, once pinnate, with long lanceolate acute lobed pinns 

 tilt- frond-- much shorter, blackish, with many pinns. 



3. POLYPODIUM. POLY! v. 



Small ferns, w itli simple or once pinnate fronds from slend< r creeping 

 rool ' oi ori round, borne al the ends of little reins. < n drj < I i it - . 



P. vulgare, Linn. Common polypody or polypode. 1 

 Pronds a fool op- less tall, narrow oblong In outline, pinnatlfid, the I 

 or quite i otiri f( rtlle pinna- no) contracted. 



I. ADIANTUM. Mmi.imi w>. Fi I 



Small ferns with compound forking frond* and wi 

 what triangular pinns, shining stlp< I the 



in- under the reflexed m I the pinns. 



A. pedatum, Linn. I maidenhair. Plant 2 ft. <r li 



il,, |{ irking Into several or man) long pinns which boar broad plu 



nules notched on the upper margin. Cool, shad) I il. 



