HYDROPHYLLACÆ

_Water-Leaf Family_

Herbs, mostly rough-hairy, with alternate or basal leaves, and perfect

regular 5-parted flowers in cymes, spikes or racemes, curled when in

bud and uncoiling as they flower; stamens 5, inserted on the corolla

and alternate with its lobes; filaments thread-like; flowers yellow,

purple or white.

Plant rough-hairy; leaves lanceolate and simple or

pinnate; flowers blue or violet-purple. =Phacelia.=

Plant smooth; leaves round reniform or cordate;

flowers white. =Romanzoffia.=

[Illustration: Phacelia sericea (Graham) A. Gray. (⅓ Nat.) Mountain

Phacelia.]

[Illustration: Phacelia heterophylla Pursh. (⅓ Nat.)]

[Sidenote: =Phacelia heterophylla= Pursh.]

Rough-hairy; stem stout, 6—24 inches high. Leaves white-hairy,

lanceolate to ovate, acute, pinnately and obliquely, striately veined,

the lower tapering into petioles, commonly with 1—2 pairs of small

lateral leaflets. Flowers in a dense spike; corolla bluish, longer than

the oblong-lanceolate or linear calyx lobes; filaments much exserted,

sparingly bearded.

In the Cougar Valley in the Selkirks; flowering in July.

[Sidenote: =Phacelia sericea= (Graham) A. Gray. _Mountain Phacelia._]

Silky-hairy or canescent throughout, 6—18 inches high, leafy to the

top. Leaves pinnately parted into linear or narrow oblong, numerous,

often pinnatifid divisions, the lower petioled, the upper nearly

sessile. Flowers crowded in an elongated spike, corolla violet, blue or

white, open-campanulate, cleft to the middle; stamens much exserted.

In dry ground and open slopes throughout the region; flowering in June

and July.

[Sidenote: =Romanzoffia sitchensis= Bong. _Romanzoffia._]

Stems slender, weak, 3—6 inches long. Leaves mainly at the root, with

slender petioles, alternate, round-cordate, or reniform, with 7—11

crenate, glandular-tipped lobes. Flowers more or less racemose on

slender, weak scapes with spreading pedicels longer than the flowers;

calyx lobes smooth, much shorter than the delicately veiny pale pink or

usually white funnel-form corolla with yellow throat and broad rounded

lobes.

On constantly dripping ledges of wet rocks, rare in the region

generally but rather frequent about Lake Louise and Lake O’Hara;

flowering during July.

Alpine flora of the Canadian Rocky Mountains · 第 80 / 91 题