Silene scaposa |
Silene williamsii |
|
---|---|---|
Blue Mountain catchfly, Robinson's catchfly, stem campion |
Williams' catchfly |
|
Habit | Plants perennial, subscapose, cespitose; taproot stout; caudex branched, woody. | Plants perennial; taproot slender; rootstock much-branched. |
Stems | several, erect, simple, 15–50 cm, puberulent, viscid-glandular distally. |
several–many, decumbent to erect, much-branched and sometimes matted, leafy, 5–30 cm, pubescent and glandular, at least distally. |
Leaves | mostly basal; basal marcescent, long-petiolate, densely tufted, blade 1-veined, narrowly oblanceolate, 2–10(–20) cm × 2–12(–20) mm, not fleshy, base tapering to petiole, apex acute to obtuse, finely puberulent on both surfaces; cauline in 1–3 pairs, sessile, much reduced, blade linear-lanceolate, not fleshy. |
2 per node, leafy above, sessile; blade narrowly lanceolate to elliptic-lanceolate, broadest proximally, narrowed to base, 1–5 cm × 3–8 mm, apex acute, short-pubescent and ± glandular on both surfaces. |
Inflorescences | 1–5(–7)-flowered, with terminal flower and lateral, open, pedunculate cymes often reduced to single flowers, bracteate; bracts narrowly lanceolate, 3–10(–20) mm. |
cymose, loose, leafy, compound, or flowers terminal, axillary in distal nodes. |
Pedicels | erect, elongate, 0.5–4.5 cm, glandular-puberulent. |
0.5–1(–3) cm, glandular-pubescent. |
Flowers | calyx prominently 10-veined, those to lobes lance-shaped broadened and thickened distally, commissural veins slender, not forked distally, campanulate, 10–12 × 3.5–5 mm in flower, enlarging to 15 × 10 mm in fruit, not contracted around carpophore, papery, margins dentate, glandular-pubescent, viscid, veins parallel, with pale commissures, lobes patent, ovate, 1.5–4 mm, rigid, margins broad, membranous; corolla off-white to dingy purple-red, clawed, claw exceeding calyx, ciliate proximally, broadened distally, limbs erect, 2–4-lobed, less than 1/2 length of calyx, lobes 2–5 mm, appendages 2–4, 0.5–1 mm; stamens slightly exserted; filaments lanate, expanded at base; styles 3–5, ± equaling calyx. |
unisexual, all plants having both staminate and pistillate flowers; calyx obscurely 10-veined, ovate-campanulate, 9–11 × 4–6 mm, herbaceous, papery, pubescence rather dense, glandular, ± obscuring veins, veins slender, without conspicuous pale commissures, lobes lanceolate, ca. 2 mm, apex acute to acuminate; corolla white, clawed, claw shorter than calyx, limb oblong, 2-lobed, 1.5–3 mm, lobes lanceolate, apex acute, appendages linear, 0.3–0.5 mm; stamens equaling corolla; stigmas 3, slender, equaling corolla, papillate only at tip. |
Capsules | slightly longer than calyx, opening by 3–5 teeth; carpophore 1.5–2.5 mm. |
straw colored, ovoid-ellipsoid, slightly longer than calyx, opening by 6 teeth; carpophore ca. 1 mm. |
Seeds | brown, reniform, 1.2–2 mm, margins with large, inflated papillae, rugose on sides. |
dull brown, not winged, angular-reniform, ca. 1 mm, tuberculate. |
2n | = 48. |
= 24. |
Silene scaposa |
Silene williamsii |
|
Phenology | Flowering early summer. | Flowering summer. |
Habitat | Subalpine grassy, gravelly, or rocky slopes, ponderosa pine forests, juniper scrub, sagebrush | Heaths, disturbed ground, river gravel and bluffs, roadsides |
Elevation | 900-3000 m (3000-9800 ft) | 100-700 m (300-2300 ft) |
Distribution |
CO; ID; NV; OR
|
AK; YT |
Discussion | Silene scaposa is a very distinct species with its subscapose inflorescence, coronalike ring of short petals, and distended fruiting calyx in which the veins to the lobes are markedly broadened and lanceolate. Variation in lobing of the corolla has been the basis for recognizing two varieties: var. scaposa (var. typica C. L. Hitchcock & Maguire), which has two-lobed petals, and var. lobata, which has four-lobed petals. However, these differences appear to be of little significance. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Silene williamsii is similar to S. menziesii but is readily separated by its leaves, which are broadest below the middle, its dull tuberculate seeds, and its stigmas, which are papillate only at the tip. It is also monoecious instead of functionally dioecious. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 202. | FNA vol. 5, p. 213. |
Parent taxa | Caryophyllaceae > subfam. Caryophylloideae > Silene | Caryophyllaceae > subfam. Caryophylloideae > Silene |
Sibling taxa | ||
Synonyms | S. scaposa var. lobata | S. menziesii subsp. williamsii, S. menziesii var. williamsii |
Name authority | B. L. Robinson: Proc. Amer. Acad. Arts 28: 145. (1893) | Britton: Bull. New York Bot. Gard. 2: 168. (1901) |
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