1885.] THE FOREST FLORA OF CARNARVONSHIRE. U7 



TEE FOREST FLORA OF CARNARVONSHIRE, MORE 

 PARTICULARLY TEE PENREYN ESTATE. 



(Concluded.) 



BY A. D. WEBSTER. 



Plants marked (') have not before been included in tlie flora of the county. 



FiLICES. 



Ojohioglossuvi vulgatum. xVbundant in several situations, more parti- 

 cularly in old pastures or la%vns. Plentiful amongst the old 

 oak trees on the lawn at Penrhyn Castle. 



Botrychium Lunaria. Locally distributed and nowhere abundant. 

 I have found a few specimens in a small wood near Bronydd 

 at 500 feet elevation, as well as, though in less quantity, on 

 the verge of an old wood near sea-level. 



Polypodium vulgarc. Everywhere abundant — on rocks, old banks, 

 and stumps of living as well as decayed trees. I have 

 frequently noticed this plant's preference, in the woodlands 

 here, for the stem and branches of the Cornish Elm {Ulmus 

 Cornuhiensc). 



P. vulgarc var. acutum. Sparingly in one or two situations. It is 

 a very distinct form, and retains the marked features under 

 cultivation. I have found the variety hifidiom on two occasions, 

 one of the patches being pretty extensive. 



P. Phegoftcris. Abundant in several of our high - lying woods. 

 Although really a mountain fern, yet the finest patch I have 

 seen, in which some of the fronds exceeded a foot in length, 

 is growing on a decayed stump in a wood not 100 feet above 

 sea-level. 



P. Bryo]}tcris. Abundant in several situations, but not so plentiful 

 as P. Phcgoptcris. In a scrub wood at Aber, it is pretty freely 

 distributed. I liave found a form of this fern with the Pinnte 

 bifid. 



Allosorus crispiis. This, the mountain Parsley fern, is in some 

 mountain districts very plentiful, not usually as a woodland 

 plant, although in one or two plantations at high elevations it 

 occupies the bare rocky patches of ground. It is most 

 abundant on slate rock or amongst the debris thrown out 

 from slate quarries. 



Polystichum aculeatum. Plentiful in several woods, but local in its 

 distribution. 



*P. lobatum. This variety of aculeatum I have found but once, 

 although there were several specimens in the station, viz. on 

 a woodland bank near Bethesda. 



