388 CRYPTOGAM I A — FILICES. [Asplenium. 



nate, pinnae roundish-oblong' obtuse crenated truncato-cuneate 

 at tbe base, (stipes and racbis black). B. Bot. t. 576. 

 Rocks and walls, common. 



4. A. viride, Huds. {green Spleenioort); fronds pinnated, pinnae 

 roundish-ovate obtusely serrated cuneate at the base, (rachis 

 green). E. Bot. t. 2257. 



Moist rocks, N. of England, Wales, and Scotland. Frequent in the 

 Highlands. 



5. A. marinum, L. {Sea Spleemvm't) ; fronds pinnate, pinnae 

 oblong obtuse inciso-serrate, the superior base rounded and sub- 

 auriculated the inferior one truncated. E. Bot. t. 392. 



In clefts and caves of rocks on the sea-coast ; not unfrequent, espe- 

 cially in the north. 



6. A. Ruta murdria, L. {Wall-rue Spleentvort^ ; fronds bi- 

 pinnate especially below, pinnules obovato-cuneate lobed or 

 bluntly toothed, involucre jagged at the margin. E. Bot. t. 150. 



Walls and fissures of rocks, frequent. 



1. A.lcmceoldtum, Hudi^. {green lanceolate Spleenioort); fronds 

 lanceolate and bipinnate, pinnules obovate attenuated at the base 

 deeply and sharply serrated, those of the lower pinnee somewhat 

 lobed, principal rachis not winged, sori at length confluent. E. 

 Bot. t. 240. 



Rocks, very rare ; in the south of England. Jersey, Cornwall, Tun- 

 bridge ; on Adderbury Church, Oxfordshire. Barmouth, Mr Wilson. — 

 Allied to the following, but distinguishable by the above mentioned cha- 

 racters. 



8. A. Adiantum nigrum, L. {black-stalked Spleenwort); fronds 

 ovate or deltoid tripinnate below, pinnules ovato-lanceolate in- 

 ciso-pinnatifid toothed, principal rachis winged, sori at length 

 confluent. E. Bot. t. 1950. 



Banks and fissures of rocks, common. — Stipes purplish-black, as in 

 the preceding species, A var., with linear pinnules, is found by Mr W. 

 Wilson in Ireland ; and at Mucruss, by Mr Mackay. 



9. A. Filix focmina, Bernh. {short-fruited Spleenwort); fronds 

 broadly lanceolate bipinnate, pinnules linear-oblong acute often 

 drooping inciso-serrate, serratures bi-tridentate acute, lower one 

 at the upper margin large auricled, sori oblong at length arched 

 at the base. — Aspidium, Sw. — E. Bot. t. 1459, (not good). — /3. 

 smaller. Aspidium irriguum, E. Bot. t. 2199. 



Moist shady places, abundant. — The sori are shorter than in other 

 Asplenia, and the species is perhaps correctly referred by Presl to 

 Athijrium, Roth ; the same genus as Allantodia, Br. 



10. A.fontdnum, Br. {smooth Hock Spleanioori); fronds linear- 

 lanceolate bipinnate, pinnules obovato-cuneate (small) with few 

 large deep and sharp teeth, principal and partial rachis winged 

 throughout. — Aspidium, Su?. — E. Bot. t. 2024. — A. Halleri, 



mild. 



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