Silene petersonii |
Silene rotundifolia |
|
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Peterson's campion or catchfly, plateau catchfly |
round-leaf catchfly |
|
Habit | Plants perennial, rhizomatous; caudex thick, with many rhizomatous, creeping, branched, slender subterranean shoots, terminating in tight tufts of leaves and erect flowering stems. | Plants perennial; taproot stout, fleshy; caudex branched. |
Stems | simple, 5–15 cm, pubescent and viscid, with stipitate glands. |
several, straggling to erect, freely branched, 2–7 cm, pilose and glandular, sparsely so proximally. |
Leaves | basal with blade 1-veined, oblanceolate, broadly spatulate, 1–4 cm × 2–8 mm, apex obtuse to acute, glandular-puberulent throughout, rarely subglabrous adaxially; cauline in 3–6 pairs, sessile, reduced distally, blade lanceolate, narrowly elliptic, or oblanceolate, 2–4 cm × 2–8 mm, apex ± acute, glandular-puberulent throughout. |
basal leaves withered at time of flowering, distal sessile, proximal petiolate, largest on mid to distal stem; blade subrotund to broadly ovate-lanceolate, 3–10 cm × 20–70 mm, base cuneate into petiole, apex short-acuminate, sparsely short-pilose. |
Inflorescences | usually with solitary terminal flower, sometimes cymose, to 8-flowered, open. |
cymose, open, few-flowered, leafy, bracteate; bracts resembling distal leaves. |
Pedicels | erect or angled near tip with flowers slightly nodding, 1–3 times longer than calyx, glandular-puberulent, often densely so. |
1–3(–4) cm, viscid, with long septate-glandular hairs. |
Flowers | calyx prominently 10-veined, campanulate, not contracted proximally around carpophore, 15–20 × 4–8 mm, papery, margins dentate, veins parallel, usually purple tinged, with pale commissures; lobes ovate, 3–5 mm, glandular-puberulent, midrib triangular, margins purple tinged, broad, membranous, apex obtuse; corolla bright pink, clawed, claw equaling calyx, broad and ligulate but abruptly contracted into limb, limb broadly cuneate, shallowly to deeply 2–4-lobed, 5–15 mm, lobes broad or narrow, appendages absent or to 2 mm, margins erose; stamens slightly longer than corolla claw; stigmas 3(–5), slightly longer than corolla claw. |
calyx indistinctly veined, tubular, broadened distally, constricted towards base around carpophore, ± umbilicate, 20–25 × 5–8 mm, herbaceous, glandular-pilose, lobes triangular, 3–4 mm, margins narrow, membranous, ciliate; corolla scarlet, clawed, claw equaling calyx, limb deeply 2-lobed, 10–15 mm, lobes lanceolate, sometimes with 2 smaller lateral teeth, ciliate, appendages saccate, 1–1.5 mm, with clear area abaxially; stamens shortly exserted; styles 3, shortly exserted. |
Capsules | equaling calyx, opening by 6 (or 8 or 10) lanceolate teeth; carpophore 1–2.5 mm. |
narrowly ellipsoid, not distending calyx, included within it, opening by 6 teeth; carpophore 6–8 mm. |
Seeds | brown, broadly reniform, flattened, 2–2.5 mm, rugose, more coarsely so on margins. |
gray, broadly reniform, plump, ca. 1 mm, shallowly papillate. |
2n | = 96. |
= 48. |
Silene petersonii |
Silene rotundifolia |
|
Phenology | Flowering summer. | Flowering late spring–summer. |
Habitat | Calcareous gravel, clay, talus, and rocks on ridges, slopes, and barren ground | Woodlands, partially shaded cliffs and bluffs |
Elevation | 2000-3400 m (6600-11200 ft) | 200-600 m (700-2000 ft) |
Distribution |
NV; UT
|
AL; GA; KY; OH; TN; WV
|
Discussion | Of conservation concern. This beautiful alpine species is variable with respect to density of pubescence, flower size, and petal structure. As this variation occurs both within and among populations, little useful purpose is served by giving names to it. The Nevada population, which is the basis for the name Silene clokeyi, is interfertile (A. R. Kruckeberg 1961) with populations in Utah (the basis for the name S. petersonii). Accordingly, a single species is recognized here without infraspecific taxa. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Silene rotundifolia is clearly related to S. laciniata but is a well-marked species of the deciduous forest region. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 198. | FNA vol. 5, p. 201. |
Parent taxa | Caryophyllaceae > subfam. Caryophylloideae > Silene | Caryophyllaceae > subfam. Caryophylloideae > Silene |
Sibling taxa | ||
Synonyms | S. clokeyi, S. petersonii var. minor | Melandrium rotundifolium |
Name authority | Maguire: Madroño 6: 24. (1941) | Nuttall: Gen. N. Amer. Pl. 1: 288. (1818) |
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