I. Silene Acāulis L. Moss Campion

Fig. 1801

Silene acaulis L. Sp. Pl. Ed. 2, 603. 1762.

Perennial, puberulent or glabrous, branched, densely tufted, l'-3' high. Leaves sessile, crowded, linear, 4"-6" long, about 1/2" wide, obtuse or acutish at the apex, the margins ciliate-serrulate; flowers solitary at the ends of the branches, sessile or slender-peduncled, 4"-6" broad, purple or purplish, rarely white; calyx campanulate, glabrous, 4" high; petals entire or emarginate, with a scale at the base of the blade; pod oblong, equalling or exceeding the calyx.

Summits of the White Mountains, N. H.; Gaspé, Quebec; Cape Breton Island, Labrador and throughout arctic America, south in the higher Rocky Mountains to Arizona. Also in arctic and alpine Europe and Asia. Cushion- or moss-pink. Summer.

I Silene Ac Ulis L Moss Campion 143

2. Silene Stellata (L.) Ait. Starry Campion. Thermon Snake-Root

Fig. 1802

Cucubalus stellatus L. Sp. Pl. 414. 1753. Silene stellata Ait. f. Hort. Kew. 3: 84. 1811.

Perennial, erect, 2°-3 1/2° high, densely and minutely rough-pubescent throughout. Leaves ovate-lanceolate, acuminate, 2'-4' long, 1/2'-1' wide, ver-ticillate in 4's or the lowest opposite, their margins finely ciliate;. flowers white, 7"-10" broad, in pan-icled cymes, forming a large showy inflorescence; calyx campanulate, inflated, 7"-8" high, its teeth triangular, acute; petals crownless, fimbriate, about equalling the stamens; pod globose-ovoid, about the length of the calyx.

In woods, Massachusetts to Minnesota, Nebraska, Georgia and Arkansas. June-Aug.

Silene ovāta Pursh, which has the habit of this species but the leaves opposite, is recorded by Pursh from " the western parts of Virginia and Carolina," but is not definitely known from Virginia.

2 Silene Stellata L Ait Starry Campion Thermon Sna 144

3. Silene Álba Muhl. Western White Or Snowy Campion

Fig. 1803

Silene alba Muhl. Cat. 45. 1813.

Cucubalus niveus Nutt. Gen. 1: 287. 1818.

Silene nivea Otth in DC. Prodr. 1: 377. 1824.

Perennial, ascending or erect, rather weak, simple, or divergently branched above, minutely puberulent or glabrate. Leaves lanceolate or oblong-lanceolate, 3'-5' long, s"S" wide, acuminate, the upper gradually smaller, and subtending the flowers; pedicels about 1' long, divaricate; flowers few, often solitary, about 10" broad; petals white above, yellowish-green beneath; calyx inflated, elongated-campanulate, pubescent, its teeth ovate, obtuse, more or less scarious-margined; petals cuneate, 2-cleft, or 2-lobed, minutely crowned.

In shaded or moist places, Pennsylvania to District of Columbia, Minnesota and Nebraska. June-July.

3 Silene Lba Muhl Western White Or Snowy Campion 145