OPHIOGLOSSACEÆ

_Adder’s-Tongue Family_

More or less succulent fern-like plants, consisting of a stem and

leaf growing from a fleshy root. Sporophyll in the form of a spike or

panicle.

[Sidenote: =Botrychium lunaria= (L.) Sw. _Moon-wort._]

Very fleshy, 2—12 inches high. Leaf usually sessile, borne at or

above the middle of the stem, pinnate with 2—8 pairs of moon-like or

fan-shaped lobes which vary from crenate to entire and either close

and folded together or distant; spore-bearing portion 2—3 pinnate,

often dense, 1—2 inches long, about as high as the leaf.

In open or exposed situations, frequently on the tops of the highest

mountains, rather rare; occurring in midsummer.

[Sidenote: =Botrychium simplex= E. Hitchcock. _Small Moon-wort._]

Plant 2—6 inches high, slender and very variable. Leaf ovate, obovate

or oblong, entire, lobed or pinnately parted, borne near the base of

the stem; spore-bearing portion a simple or slightly compound spike,

sometimes reduced to only a few sporanges; apex of the leaf and

spore-bearing portion erect in fruit.

In alpine meadows or grassy slopes, frequently through the Rockies but

very inconspicuous; during summer.

[Sidenote: =Botrychium virginianum= (L.) Sw. _Virginia Grape Fern._]

Stem slender, 4 inches to 2 feet high. Leaf thin, ternately divided

and spreading 3—12 inches across, pinnately much divided into

oblong-toothed segments; spore-bearing portion long-stalked, much

above the leaf 2—3 pinnate, cinnamon brown, when ripe.

In rich moist woods, sparingly throughout the region during the summer.

Alpine flora of the Canadian Rocky Mountains · 第 23 / 91 题