38. ASPLENIUM, §§ EUASPLENIUM. 197 



slightly crenate, the two sides unequal, the upper one the broadest, and narrowed 

 suddenly at the base ; texture subcoriaceous ; vdns pinnate, inconspicuous ; rachis 

 polished like the stem ; son 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 pinnse 4 in. 1. : A denmm, Brack., is a reduced alpine form from the Andes. 



38. A. arcuatum, Liebm. ; gt. tufted, very short, polished, blackish ;/r. arcuate, 

 6-9 in. 1., \ in. bv., linear, with 20-30 very close-placed horizontal subdimidiate 

 sessile /»»«« on each side, which are j 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 pinnse. — 

 Hk.Sp.3.p. 142. «. 189. 



Hab. Mexico. — Probably this ought to be joined with A. monanth.em.vm. 



39. A. extensum. Fee ; st. tufted, 4-6 in. 1., polished, blackish ; fr. \%-'2A in. I., 

 j-1 in. br., with 20-40 sessile pinnae 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 ; xieins inconspicuous ; 

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

 gemmae, and throwing out branches from the axUs of the pinnae ; sori linear- 

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



Hab. Andes of Columbia and Peru. — ^A larger plant than A. Trichomanes, with pinnse 

 very blunt, sometimes nearly roond. 



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

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

 6-10 horizontal sessile pinnae on each side, which are J 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 ; vdns 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. Sk. S Gr. Ic. t. 152. A. pLlosum, 

 Chiss. 



Hab. France, Spain, Italy. — Distinguished from A. TricJurmanes by its glandnlosity 

 and more deeply-cut pinnae. 



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

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

 midiate ^nnie on each side, which are f-^ 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 pinnae, decurved line ; texture 

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

 the lower edge of the pinnse. — Hk. Sip. 3. p. 140. 



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

 the Andes to Chili. — ^A larger plant than A. Trichomaties, with the sori typically one or 

 two to a pinna ; but in some of the forms, — for instance, A. GaieoUii, Ffe, and A. Men- 

 ziesii, Hk. & Gr. Ic. t. 100, — more numerous. 



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



