Silene petersonii |
Silene nachlingerae |
|
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Peterson's campion or catchfly, plateau catchfly |
Jan's catchfly, Nachlinger's catchfly, Nevada catchfly |
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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; caudex usually branched, woody, producing tufts of basal leaves and 1–several flowering shoots. |
Stems | simple, 5–15 cm, pubescent and viscid, with stipitate glands. |
subscapose, with (1–)2–3(–4) pairs of leaves, 6–25 cm, much reduced above base, retrorsely puberulent, eglandular. |
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. |
2 per node; basal blades oblanceolate, spatulate, 1.4–4 cm × 2–5 mm, base ciliate, apex acute, subglabrous to retrorse-puberulent; cauline shortly connate proximally, blade narrowly oblanceolate to linear-lanceolate, 0.5–3.5 cm × 1–2 mm, apex purple tinged, retrorse-puberulent, often sparsely so. |
Inflorescences | usually with solitary terminal flower, sometimes cymose, to 8-flowered, open. |
1–3(–4)-flowered, open. |
Pedicels | erect or angled near tip with flowers slightly nodding, 1–3 times longer than calyx, glandular-puberulent, often densely so. |
erect, 1–4 times longer than fruiting calyx, retrorsely puberulent, without 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 prominently 10-veined, cylindric, becoming narrowly ovoid, not inflated, not contracted proximally around carpophore, 6–11.5 × 3 mm in flower, broadening to ca. 5 mm in fruit, membranous, uniformly puberulent, without glandular hairs, veins parallel, green, with pale commissures, lobes triangular, 1–1.5 mm, margins narrowly membranous, apex purple-tipped; corolla white, usually flushed with pink or purple towards apex, ligulate to ± oblanceolate, slightly longer than calyx, not clearly differentiated into claw and limb, unlobed to notched, auricles and appendages absent; stamens equaling calyx; styles 3, included in calyx. |
Capsules | equaling calyx, opening by 6 (or 8 or 10) lanceolate teeth; carpophore 1–2.5 mm. |
ellipsoid-ovoid, slightly longer than calyx, opening by 6 ascending teeth; carpophore ca. 1 mm. |
Seeds | brown, broadly reniform, flattened, 2–2.5 mm, rugose, more coarsely so on margins. |
rust colored, reniform, 0.7–1 mm, margins papillate; papillae large, inflated. |
2n | = 96. |
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Silene petersonii |
Silene nachlingerae |
|
Phenology | Flowering summer. | Flowering summer. |
Habitat | Calcareous gravel, clay, talus, and rocks on ridges, slopes, and barren ground | Alpine limestone ridges and slopes |
Elevation | 2000-3400 m (6600-11200 ft) | 2500-3000 m (8200-9800 ft) |
Distribution |
NV; UT
|
NV; UT |
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.) |
Of conservation concern. Silene nachlingerae is a small version of S. invisa, although the latter species has glabrous leaves. Both have the characteristic inflated (balloonlike) papillae around the outer edge of the seed. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 198. | FNA vol. 5, p. 193. |
Parent taxa | Caryophyllaceae > subfam. Caryophylloideae > Silene | Caryophyllaceae > subfam. Caryophylloideae > Silene |
Sibling taxa | ||
Synonyms | S. clokeyi, S. petersonii var. minor | |
Name authority | Maguire: Madroño 6: 24. (1941) | Tiehm: Brittonia 37: 344, fig. 1. (1985) |
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