434 
Polypodiftcese. 
4. Fronds glandular-sp o 11 e d underneath,oblong-lanceo¬ 
late in contour, 2-pinnatisect, with mucronate teeth.— 
calc, debris in the Alp.; Suchet, Marchairuz and 
Dole in the Jura. 7 rigidum Sw. 2626. 
— Adult fronds glandless underneath, or at any rate broader 
in outline, oblong or triangular .... 5 
5. Fronds simply pinnatisect, with pinnatifid or pinnati- 
partite segments; contour of the fronds oblong or ob¬ 
long-lanceolate ....... 6* 
— Fronds 2 —3-pinnatisect, triangular-oval or oblong-oval 
in contour with mucronate teeth; petiole long.—b. 
dilatatmn Sw. Fronds broader, dark green, 3- or almost 
4-pinnatisect; petiole covered with darkevscales.—Woods, 
peat-mosses; distrib. 6 
spinulosum Sw. 2627. 
6. Fronds of 2 forms, rather long-petioled, contour narrow- 
oblong. Segments of the first order distant, with broad 
base, almost triangular-lanceolate. Segments of the second 
order 6 — 10 on each side, the teeth short-mucronate. 
Petiole with scattered scales. Fertile fronds longer, the 
lobes vertical to the limb. — Peat-mosses, rare; Bern, 
Thun, Wauwylermoos (Suppiger, Liischer), Robenhausen. 7 
cristatum Sw. 2628. 
— Fronds uniform, rather short-petioled, oblong-lanceolate 
in contour; segments of the first order crowded, long- 
lanceolate, acuminate; segments of the second order 
15 — 25 on each side, the teeth not mucronate. Petiole 
very thickly covered with scales. Male fern.—Woods, 
everywhere. 6 .... Filix mas Sw. 2629. 
7 (1). Fronds simply pinnatisect, stiff, lanceolate in con¬ 
tour; pinnee sickle-shaped, curved at the top, teeth al¬ 
most spiny. Ilolly fern.—Rocky, wooded slopes in the 
mount, and subalp. 7 Lonchitis Sw. 2630. 
— Fronds 2- or almost 2-pinnatisect. Type of A. acu- 
leatum. *) ........ 8 
8. Fronds hard, almost coriaceous, acuminate, more or 
less narrowed at the base; segments of the first order 
lanceolate, acuminate, gen. curved like a sickle towards 
the top, distinctly auricled at the base; the lower seg¬ 
ment of the second order of the upper series much 
larger than the others. — Mountain woods, gorges ; distrib. 6 
lobaUim Sw. 2631. 
— Fronds softer, almost like paper, less acuminate than 
in the last, much narrowed at the base; segments of 
the first order broader, almost straight, indistinctly auricled 
at the base; the lower segment of the second order of 
*) The true A. aculeatum Sw. (aculeatum Swartzianum Koch) is not 
found in Switz. See N Beitr III, 51. 
