I. Polypodiaceae. Fern Family

Leafy plants with creeping rhizomes. Spores borne in sporangia collected in dots, lines or clusters on the backs or margins of the fronds or their divisions.

I. Phegopteris. (Presl.) Fee.

1. P. polypodioides. Fee. Long Beech Fern.

2. P. alpestris. (Hoppe.) Mett. Tufted Beech Fern.

3. P. Dryopteris. (L.) Fee. Oak Fern. II. Adiantum. (Tourn.) L.

1. A. pedatum. L. Maidenhair.

III. Pteris. L.

1. P. aquilina var. lanuginosa. Bong. Common Bracken.

IV. Cheilanthes. Sw.

1. C. Feei. Moore. Slender Lip Fern. V. Pellaea. Link.

1. P. atropurpurea. (L.) Link. Purple Cliff Brake. VI. Cryptogram ma. R. Br.

1. C. acrostichoides. R. Br. Nootka Rock Brake.

2. C. Stelleri. (Gmel.) Prantl. Slender Rock Brake.

VII. Asplenium. L.

1. A. viride. Huds. Green Spleenwort.

2. A. cyclosorum. Rupr. Large Lady Fern.

VIII. Polystichum. Roth.

1. P. Lonchitis. (L.) Roth. Holly Fern.

IX. Aspidium. Sw.

1. A. Filix-mas. (L.) Sw. Male Shield Fern.

2. A. spinulosum var. dilatatum. (Hoffm.) Hook.

Spinulose Shield Fern.

3. A. Oreopteris. Sw. Scaly Shield Fern. X. Cystopteris. Bernh.

1. C. fragilis. (L.) Bernh. Brittle Fern.

2. C. montana. (Lam.) Bernh. Mountain Bladder Fern.

II. Ophioglossaceae. Adder's Tongue Family

Leafy, fleshy plants; leaves simple or branched, fern-like, erect in vernation, the bud placed either inside the base of the old stalk or beside it; sporangia borne in spikes or panicles formed from the main tissue of the fruiting branches.

I. Botrychium. Sw.

1. B. Lunaria. (L.) Sw. Moonwort.

2. B. simplex. E. Small Moonwort.

3. B. virginianum. (L.) Sw. Rattlesnake Fern.

4. B. lanceolatum. (Gmel.) Angstroem. Slender Moonwort.