BOTRYCHIUM. 



21 



frond 1 Jin. long, Jin. broad, egg-sliaped, and cut down to a flattened stalk 

 into two or three pairs of leaflets, above which the fertile frond — which 

 forms an elongated panicle and consists of a few distant branches, the lowest 

 of which are sometimes branched again — is always situated. — Hooker^ Synopsis 

 Filicum, p. 447. Eaton, Ferns of North America, i., t. 17. 



B. SUbcarnosum — sub-car-no'-smn (somewhat fleshy). Synonymous with 

 B. daucifolium. 



B. ternatum — ter-na'-tum (ternate, or arranged by threes about the same 

 part), Swartz. 



A very variable sj)6cies, native of Australia, Tasmania, New Zealand, 

 Siberia, and Japan ; also found in Europe on the Pyrenees and in Hungary. 

 The bare stem is lin. to 2in. long. The barren frond, oin. to Gin. each 

 way and tri- or quadrij)imiatifid (three or four times divided half-way to the 

 midrib), is borne on a petiole (stalk) 2in. to 4in. long ; the lower leaflets are 

 much the largest, and are divided into pinnules (leafits) oblong in shape 

 and slightly toothed. The fertile frond considerably overtops the barren one ; 

 it is borne on a peduncle (stalk) Gin. to 9in. long, and consists of a much- 

 divided panicle lin. to Gin. long. — Hooker, Synopsis Filicum, p. 448. 



Several so-called species, which are only geographical varieties of this 

 one, may be named here : 



B. t. australe — aus-tra'-le (Southern), R. Brown. 



An Australian form, differing from the typical plant only in its larger 

 dimensions. — Hooker, Syiiopsis Filicum, p. 448. 



B. t. lunarioides — lu-na-ri-o-i'-des (resembhng B. Lunaria), Swartz. 



A North American variety of B. ternatum, from which it is only 

 distinguished by its smaller dimensions throughout. — Hooker, Synopsis 

 Filicum, p. 448. 



B. t. obliquum — ob-li'-qu-um (oblique), Muhl. 



Another North American variety, differing from the type in its larger 

 dimensions and in the more finely-divided nature of its growth, of a dark 

 green colour, reaching a total height of 1ft. to l|ft. The barren frond, 

 bi- or tripinnately decompound, is furnished with broad, oblique leaflets, 



