CORNACEÆ

_Dogwood Family_

Shrubs or trees with simple, opposite, verticillate or alternate

leaves, usually entire; flowers in cymes, heads, or rarely solitary;

sepals and petals 4 or 5, stamens as many as the petals or more

numerous and inserted with them; fruit a drupe.

[Sidenote: =Cornus canadensis intermedia= Farr. _Dwarf Cornel.

Bunch-berry._]

Smooth, herbaceous from a nearly horizontal rootstock, woody only

at the base; flowering stems, erect, scaly, 5—7 inches high. Leaves

verticillate at the summit of the stem or sometimes 1 or 2 pairs

of opposite ones below, sessile, oval, ovate or obovate, smooth or

minutely appressed, pubescent, acute at each end or sometimes rounded

at the base, entire, 1—3 inches long. Flowers small, capitate, purple,

surrounded by a white involucre of 4—6 petaloid-ovate bracts, ⅓—¾ of

an inch long; stamens alternate with the petals; styles exserted, deep

purple; fruit globose, ⅓ of an inch in diameter in a close head; bright

red.

Common throughout the region in moist woods flowering in early summer.

[Sidenote: =Cornus stolonifera= Michx. _Red-stemmed Dogwood._]

Shrub 3—16 feet high, usually stoloniferous, the twigs smooth

and bright reddish-purple or the youngest finely hairy. Leaves

slender-petioled, ovate, ovate-lanceolate or oval, acute or short

acuminate, rounded or narrowed at the base, finely close-hairy above,

white or whitish and sparingly hairy beneath or sometimes smooth on

both surfaces, 1—5 inches long. Flowers in flat-topped cymes, 1—2

inches broad, petals white, less than ¼ of an inch long; berries white

or whitish.

In moist places and along streams and river banks throughout the

region; an attractive shrub, sometimes forming thickets of considerable

size, the red stems contrasting beautifully with the dark green leaves;

flowering in June.

Alpine flora of the Canadian Rocky Mountains · 第 70 / 91 题