TAB. II 



Woopsia (Htmenoctstis) polystichioides, Eaton. 



Spithamsea ad pedalem dense c^spitosa, caudice subnullo, 

 frondibus subcoriaceo-membranaceis opacis lanceolatis pin- 

 natis, pinnis patentibus numerosis approximatis sessilibus 

 6-7 lineas longis lanceolatis obtusis basi cuneato-truncatis 

 sursum acute auriculatis junioribus sparsim paleaceis 

 villosisque demum glabris margine integerrimis vel apicem 

 versus obsoletissime crenatis, costa indistincta, venis im- 

 mersis simplicibus vel furcatis liberis ad marginem apice 

 soriferis, involucro e squamis 4-5 tenui - membranceis in 

 orbem dispositis imbricatis longe ciliatis, stipitibus castaneis 

 rachique straminea nitidissimis deciduo paleaceis. 



Woodsia (Hymenocystis) polystichoides, Eaton in Wrights 

 Herh. of Ringgold and Rodgers U. S. North Pacif. Explor. 

 Exped. 



Hab. Hakodadi, Japan, C. Wright. 



A very remarkable and very pretty Fern, for which I am 

 indebted to Mr. Wright and Mr. Eaton, who observe (in litt.) 

 that this ought, perhaps, to be made the type of a new 

 genus ; for that " the parts of the indusium imbricate over 

 each other.'' It is however, I think, very difficult, where the 

 indusium (or involucre) is of so very delicate and fragile a 

 nature, to say whether it is of the structure now mentioned, 

 or whether, being first entire, it may not afterwards burst from 

 the top into a few unequal valves, which may appear to be 

 imbricated, and as is the case in the group or subgenus 

 Physematium, K!fs. (Hymenocystis, C. A. Meyer), to which 

 Mr. Eaton has, as it appears to me, properly referred it. 



Fig. 1. Fertile pinna, seen from beneath, f. 2. Portion 

 of the same. f. 3. Involucre partially closed, f. 4. In- 

 volucre open, and showing the sorus. f. 5. Portion of a 

 valve of the involucre. /. 6. Capsule : — magnified. 



Cxiri, 2, t, 2. 



