Pl.end.cr, 1. FILICES. 1. Osmunda. 8 



e. Invol. oldening towards the rib; sori linear, 

 paralltl to the midrib. Biecknidece, f. 



Invol. scarioise, submarginal Blechnum. 9. 



Invol. scariose, marginal Stegania. 10. 



f. Invol. mai-g.'//a/, scariose, originating from the injiected up- 

 per membra/It: of t lie frond, opening inwards. PteridecE.g. 



Sori linear, marginal, contiguous Ptkris. 11. 



Sori dot-like Adiantum. 12. 



g. Invol. more or less cnpshape, superficial, 

 containing ike sori. Cyathecs, h. 

 Sort doi'sal ; hivot. peltate, margin fringed ; 



receptnrLe none WooDSiA. 18. 



Sori marginal; invol. pitcher-shape, one-leafed; 



recept<jcu cylindrical Trichomanes. 14. 



Sori marginal; invol. pitcher-shape, two-leaved; 

 receptacle cylindrical . Hymenophyllum. 15. 



3. Capsule without an elastic ring, or slrice. 



Sori in a compound spike, opening paral- 

 lelly to their insertion. Bnstrichicp, i. . . 'Bostrichivm. 16. 



Sori in a subarticulate distichous spike, 

 opening transversely. Ophioglossce, k. Ophioglossum. 17. 



A. Osmundace^. Capsules very numerous, pedicelled, 

 elegantly striated, generally radiated at top; when magnified 

 finely veined, and pellucid. 



Gen. I. 1. OSMUNDA. Lobel and Pena. Flowerfern. 



Capsule footstalked, globular, semi-bivalve, opening at 

 the striae, situated either on the back of the unaltered frond, 

 or surrounding the frond contracted into the form of a 

 panicle. — B.oot fleshy; Frond many tufted, pinnate, smooth. 



Osmunda regalis. Eoyal Flowerfern. 



Frond bipinnate ; Leaflets lanceolate, edge scarcely 

 notched, lower ones opposite, sub-auricled at the base; 

 Panicle bipinnate, fructiferous, at the apex of the frond. 



Filix fcem. q F. ramosa non dentata florida C. Bauhin, Rati Syn. J25, 4. 

 F. florida seu O-mii. da res: i lis, Ger. em. 1131 ; Parh. I05b. 

 Osmucda legalis, Lin. S. P. 15'il. 

 Water fern. Osmund royal. Royal moonwort. Flowering fern. 



Watery places in woods; pei'ennial; June and July. 



^. incisa. Lower leaflets,^ or 3 cut. 



B 2 



