White Marsh Marigold--Caltha leptosepala.]

[Illustration]

There are many varieties of Clematis, or Virgin's Bower, familiar to

us all, both East and West, and general favorites, widely distributed

and flourishing in temperate regions; perennials, woody below, which

is unusual in this family. Usually they are beautiful trailing vines,

which climb over bushes and rocks, holding on by their twisting,

curling leaf-stalks. The flowers have no petals, or only very small

ones, but their sepals, usually four, resemble petals; the stamens are

numerous. The numerous pistils form a round bunch of akenes, their

styles developing into long feathery tails, and these gray, plumy heads

are very conspicuous and ornamental, when the flowers are gone. The

leaves are opposite, which is unusual in this family, with slender

leaf-stalks, and are usually compound. Some plants have only staminate

flowers and some only pistillate ones, and the appearance is quite

different, the flowers with stamens being handsomer.

[Sidenote: =Virgin's Bower, Pipe-stem=

_Clématis lasiántha_

=White, pale-yellow

Spring

California=]

Near the summit of Mt. Lowe, and in similar places, we find this

beautiful vine clambering over the rocks. The flowers measure an inch

and a quarter to over two inches across and they vary in tint from

almost pure white to a lovely soft shade of pale-yellow, the handsome

clusters forming a beautiful contrast to the dark-green foliage. The

stamens and pistils are on different plants. The flowers, leaves, and

stems are all more or less velvety and the akenes have tails an inch

long, forming a head, about two inches across. The flowers are often so

numerous as to make conspicuous masses of pale color on canyon sides,

in the Coast Range and Sierra Nevada Mountains.

[Illustration]

[Illustration: Virgin's Bower--Clematis lasiantha.]

There are a few kinds of Atragene, resembling Clematis.

[Sidenote: =Purple Clematis=

_Atrágene occidentàlis (Clematis)_

=Violet, blue

Summer

West=]

This is peculiarly attractive, as the flowers are large and beautiful

and the foliage very pretty. The leaves are divided into three, pointed

leaflets, which are thin in texture, light bright-green and prettily

cut or lobed, and the trailing or climbing stems are almost smooth,

slender and purplish above and woody below. The flowers, which are

not in clusters, measure from two to three inches across, with four,

sometimes five, violet or blue sepals, spreading widely as the flower

grows older, and the outer stamens are broad and resemble small petals.

The flowers are followed by handsome feathery heads, which are large

and silky. This pretty vine is found in the Grand Canyon, not far below

the Rim, and in many mountain places. The foliage varies somewhat in

different climates.

There are many kinds of Thalictrum, not easily distinguished, widely

distributed, a few in the Andes, India, and Africa; perennials, with

tall stems, from a short rootstock, and handsome, compound leaves; the

flowers perfect or imperfect, many, small, in clusters, with four to

seven sepals and no petals; the akenes tipped with the long styles and

forming a head. Some of these plants have a disagreeable smell. They

grow in moist places, both East and West.

[Sidenote: =Meadow Rue=

_Thalíctrum Féndleri_

=Greenish-white

Summer

West=]

Though its flowers are small and colorless, this plant is conspicuous

for delicacy and grace. The leaves of tender green suggest the fronds

of Maidenhair Fern and are almost as beautiful, while the flowers

are odd and pretty. A shower of numerous, pale-yellow stamens, with

purplish, threadlike filaments, falls from the center of four,

greenish-white sepals and forms a charming little tassel. These tassels

hang on the ends of very slender pedicels, in loose clusters. The

smooth stems are from one to three feet tall and the smooth leaves are

thin in texture, thrice-compound, with many, rounded leaflets, the

lower leaves with long leaf-stalks. This Meadow Rue has its pistils and

stamens on different plants, the flowers with tassels of stamens being

prettier and more conspicuous than the small, green, pistillate ones.

The variety _Wrìghtii_ is common in Arizona.

[Illustration: Lilac Clematis--Atragene occidentalis.]

[Illustration: Meadow Rue--Thalictrum Fendleri.]

Field Book of Western Wild Flowers · 第 104 / 319 题