(I) 



sli 



38. ASPLENIUM, EDASPLEXIUJI. 197 



#htly crenate, the two sides unequal, the upper one the broadest, and narrowed 

 ddenly at the base ; texture subcoriaceous ; veins pinnate, inconspicuous ; rachis 



polished like the stem ; sori linear-oblong, 3-6 on each side of the midrib. 



Hk. Sp. 3. p. 130. Brit. F. t. 29. 



Hab. Temperate regions of the Old World, from Britain and the Azores eastward to 

 Japan and the Himalayas, where it ascends to 6-8,000 ft. ; S. Africa ; South Australia, 

 Van Diemen's Land, New Zealand, Sandwich Islands ; N. America, and southward 

 along the Andes to Peru. TheMadeiran A. anceps, Sol., and S. American A. castaneum, 

 Cham. & Schl., seem to be luxuriant forms. The latter has the frond sometimes 18 in. 

 and the pinnae ^ in. 1. : A densum, Brack., is a reduced alpine form from the Andes. 



38. A. arcuatum, Liebm. ; st. tufted, very short, polished, blackish \fr. arcuate, 

 G-9 in. 1., | in. br., linear, with 20-30 very close-placed horizontal subdimidiate 

 sessile pinnae on each side, which are \ in. or rather less br., \ in. deep, blunt at 

 the point, the upper side slightly crenate, slightly auricled, and narrowed sud- 

 denly at the base, lower line entire, nearly straight or decurved in the lower 

 ones ; texture subcoriaceous ; rachis black, and polished like the stem ; veins 

 pinnate ; sori short, only 1 or 2, parallel with the lower edge of the pinnae. 

 Hk. Sp. 3. p. 142. t. 189. 



Hab. Mexico. Probably this ought to be joined with A. monanthemvm. 



39. A. extensum, Fee ; a. tufted, 4-6 in. 1., polished, blackish ; fr. 12-24 in. 1., 

 f-1 in. br., with 20-40 sessile pinnse on each side, which are in. 1., J-f in. deep, 

 blunt and entire, the upper side rather the broadest,.and often cordate, whilst the 

 lower is merely rounded at the base ; texture coriaceous ; veins inconspicuous ; 

 rachis polished like the stem, with 2 hairy lines running up it, sometimes bearing 

 gemmae, and throwing out branches from the axils of the pinnse ; sori linear- 

 oblong, 2 or 3 on each side of the midrib. Hk. Sp. 3. p. 142. 



Hab. Andes of Columbia and Peru. A larger plant than A . Trichomanes, with pinnae 

 very blunt, sometimes nearly round. 



40. A. Petrarchce, D. C. ; st. densely tufted, 1-2 in. 1., wiry, nearly black, 

 densely glandular when young ; jr. 2-3 in. 1., i in. br., linear-lanceolate, with 

 6-10 horizontal sessile pinnse on each side, which are in. 1., rather less br., 

 cordate-ovate, the point blunt, the edge sinuated or pinnatifid, the base unequal, 

 slightly truncate on the lower side ; texture subcoriaceous ; veins obliquely pin- 

 nate, ebeneous ; rachis and young fronds glandular ; sori oblong, very short, 4-6 

 on each side of the midrib. Hk. Sp. 3. p. 138. Hk. & Gr. Ic. t. 152. A. pilosum, 

 Guss. 



Hab. France, Spain, Italy. Distinguished from A. Trichomanes by its glandules! ty 

 and more deeply-cut pinnse. 



41. A. monanthemum, Linn. ; st. densely tufted, 3-6 in. 1., naked, polished, 

 chesnut-brown ; fr. 12-18 in. 1., f-1 in. br., with 20-40 horizontal sessile subdi- 

 midiate pinnts on each side, whicn are |- in. 1., J in. deep, the upper side crenate, 

 suddenly narrowed at the base, often distinctly auricled, the lower more or less 

 distinctly cut away in a straight or, in the lower pinnse, decurved line ; texture 

 subcoriaceous ;' veins flabellate ; sori linear-oblong, usually 1 or 2, parallel with 

 the lower edge of the pinnse. Hk. Sp. 3. p. 140. 



Hab. Madeira, Azores, Abyssinia, Cape Colony, Sandwich Islands and Mexico along 

 the Andes to Chili. A larger plant than A. Trichomanes, with the sori typically one or 

 two to a pinna ; but in some of the forms, for instance, A. Galeottii, Fe"e, and A. Men- 

 zicsii, Hk. & Gr. Ic. t. 100, more numerous. 



42. A. normalc, Don ; st. 4-6 in. 1., tufted, wiry, blackish, polished ; fr. 8-12 



