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Peterson's campion or catchfly, plateau catchfly

Oregon campion, Oregon catchfly, Oregon silene

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 simple or sparsely branched, woody.
Stems

simple, 5–15 cm, pubescent and viscid, with stipitate glands.

usually simple proximal to inflorescence, 30–50(–70) cm, puberulent and shortly stipitate-glandular, especially distally.

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, gradually reduced distally;

basal petiolate, blade oblanceolate, spatulate, 5–9 cm × 7–15 mm (including petiole), apex acute to obtuse, usually glabrous adaxially, sparsely pubescent abaxially;

cauline in 4–6 pairs, blade linear-lanceolate, 1–6(–8) cm × 2–6 mm, puberulent and shortly stipitate-glandular.

Inflorescences

usually with solitary terminal flower, sometimes cymose, to 8-flowered, open.

thyrsate, 3–25-flowered, open, bracteate, pedunculate, stipitate-glandular, viscid;

bracts narrowly lanceolate, 2–25 mm, apex acuminate.

Pedicels

erect or angled near tip with flowers slightly nodding, 1–3 times longer than calyx, glandular-puberulent, often densely so.

ascending.

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, narrowly campanulate, umbilicate, somewhat clavate and constricted below middle around carpophore, 9–15 × 3–4 mm in flower, broadening to 7 mm in fruit, membranous, shortly stipitate-glandular, veins parallel, slender, tinged dark red, with pale commissures, lobes ovate-lanceolate, obtuse, 2–3 mm, margins scarious;

corolla creamy white, sometimes pink tinged, clawed, claw equaling calyx, glabrous, broadening only slightly into limb 3–8 mm, limb with 4–6 linear lobes, some splitting to 10 linear segments, appendages 4–6, linear, 1–1.5 mm, apex acute;

stamens ca. equaling petals;

filaments glabrous;

stigmas 3(–5), ca. equaling petals.

Capsules

equaling calyx, opening by 6 (or 8 or 10) lanceolate teeth;

carpophore 1–2.5 mm.

ellipsoid, slightly longer than calyx, opening by 6 (or 8 or 10) very brittle teeth;

carpophore 2–4 mm.

Seeds

brown, broadly reniform, flattened, 2–2.5 mm, rugose, more coarsely so on margins.

brown, ± reniform, angular, glossy, shallowly tuberculate.

2n

= 96.

= 48.

Silene petersonii

Silene oregana

Phenology Flowering summer. Flowering summer.
Habitat Calcareous gravel, clay, talus, and rocks on ridges, slopes, and barren ground Dry, grassy slopes, rocky areas, open woodlands and forests
Elevation 2000-3400 m (6600-11200 ft) 1500-2800 m (4900-9200 ft)
Distribution
from FNA
NV; UT
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; ID; MT; NV; OR; UT; WA; WY
[WildflowerSearch map]
[BONAP county map]
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.)

The creamy white laciniate petals are the best field (and herbarium) guide to distinguishing this species from Silene parryi and S. scouleri, both of which have 2–4-lobed petals that are usually dingy cream to greenish or purple tinged.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 5, p. 198. FNA vol. 5, p. 196.
Parent taxa Caryophyllaceae > subfam. Caryophylloideae > Silene Caryophyllaceae > subfam. Caryophylloideae > Silene
Sibling taxa
S. acaulis, S. antirrhina, S. aperta, S. armeria, S. bernardina, S. bridgesii, S. campanulata, S. caroliniana, S. chalcedonica, S. conica, S. coniflora, S. conoidea, S. coronaria, S. csereii, S. dichotoma, S. dioica, S. douglasii, S. drummondii, S. flos-cuculi, S. gallica, S. grayi, S. hitchguirei, S. hookeri, S. invisa, S. involucrata, S. kingii, S. laciniata, S. latifolia, S. lemmonii, S. marmorensis, S. menziesii, S. nachlingerae, S. nivea, S. noctiflora, S. nuda, S. occidentalis, S. oregana, S. ostenfeldii, S. ovata, S. parishii, S. parryi, S. pendula, S. plankii, S. polypetala, S. pseudatocion, S. rectiramea, S. regia, S. repens, S. rotundifolia, S. sargentii, S. scaposa, S. scouleri, S. seelyi, S. serpentinicola, S. sibirica, S. sorensenis, S. spaldingii, S. stellata, S. subciliata, S. suecica, S. suksdorfii, S. thurberi, S. uralensis, S. verecunda, S. virginica, S. viscaria, S. vulgaris, S. williamsii, S. wrightii
S. acaulis, S. antirrhina, S. aperta, S. armeria, S. bernardina, S. bridgesii, S. campanulata, S. caroliniana, S. chalcedonica, S. conica, S. coniflora, S. conoidea, S. coronaria, S. csereii, S. dichotoma, S. dioica, S. douglasii, S. drummondii, S. flos-cuculi, S. gallica, S. grayi, S. hitchguirei, S. hookeri, S. invisa, S. involucrata, S. kingii, S. laciniata, S. latifolia, S. lemmonii, S. marmorensis, S. menziesii, S. nachlingerae, S. nivea, S. noctiflora, S. nuda, S. occidentalis, S. ostenfeldii, S. ovata, S. parishii, S. parryi, S. pendula, S. petersonii, S. plankii, S. polypetala, S. pseudatocion, S. rectiramea, S. regia, S. repens, S. rotundifolia, S. sargentii, S. scaposa, S. scouleri, S. seelyi, S. serpentinicola, S. sibirica, S. sorensenis, S. spaldingii, S. stellata, S. subciliata, S. suecica, S. suksdorfii, S. thurberi, S. uralensis, S. verecunda, S. virginica, S. viscaria, S. vulgaris, S. williamsii, S. wrightii
Synonyms S. clokeyi, S. petersonii var. minor S. filisecta, S. gormanii, S. oregana var. filisecta
Name authority Maguire: Madroño 6: 24. (1941) S. Watson: Proc. Amer. Acad. Arts 10: 343. (1875)
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