 |
|
1
|
|
Fronds tufted on short stock or abbreviated rhizome
|
12. pulcherrimum
|
|
|
Fronds distributed along creeping rhizome
|
2
|
|
|
|
2
|
|
Lamina surface bearing slender hairs
|
5. rufescens
|
|
|
Lamina surface without hairs
|
3
|
|
|
|
3
|
|
Stipes and rhachis bearing hairs
|
4
|
|
|
Stipes and rhachis without hairs
|
7
|
|
|
|
4
|
|
Stipes winged above; frond scented
|
5
|
|
|
Stipes not winged above; frond not scented
|
6
|
|
|
|
5
|
|
Hairs few; lamina segs not filiform; indusia on lateral seg
|
6. sanguinolentum
|
|
|
Hairs numerous; segs filiform; indusia on terminal segs
|
7. villosum
|
|
|
|
6
|
|
Stipes with bristly hairs; lamina dull, brownish-green, not flabellate
|
8. scabrum
|
|
|
Stipes naked except for tuft of woolly hairs at base; lamina pale green, shining, flabellate
|
1. flabellatum
|
|
|
|
7
|
|
Stipes not winged, or very obscurely so above
|
8
|
|
|
Stipes distinctly winged for some distance
|
11
|
|
|
|
8
|
|
Sori free or nearly so
|
9
|
|
|
Sori distinctly partly or completely immersed
|
10
|
|
|
|
9
|
|
Fronds dark green, scented; indusia on lateral segs
|
6. sanguinolentum
|
|
|
Fronds bright green, not scented; indusia on terminal segs
|
9. demissum
|
|
|
|
10
|
|
Lamina flabellate; stipes with tuft of woolly hairs at base
|
1. flabellatum
|
|
|
Lamina oblong in outline; stipes without tuft of woolly hairs at base
|
3. rarum
|
|
|
|
11
|
|
Stipes winged only in upper part; frond scented
|
6. sanguinolentum
|
|
|
Stipes winged to base or nearly so; frond not scented
|
12
|
|
|
|
12
|
|
|
13
|
|
Sori completely or partly immersed in apex of segs; fronds up to 5 dm. or more long; final segs up to 3 mm. or more broad
|
2. dilatatum
|
|
|
Sori free at apex of segs; fronds under 3 dm. long; final segs seldom up to 3 mm. broad
|
14
|
|
|
|
14
|
|
Lamina margins not thickened; lamina narrow-oblong in outline; indusium valves toothed or erose at apex
|
4. montanum
|
|
|
Lamina margin thickened; lamina about triangular in outline; indusium valves entire
|
15
|
|
|
|
15
|
|