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Hooker's campion, Hooker's catchfly, Hooker's Indian pink, Hooker's silene

red campion, red catchfly, silène dioïque

Habit Herbs, perennial; caudex much-branched, thick and woody. Plants perennial; taproot slender.
Stems

solitary or numerous, decumbent and rooting at base, becoming erect, 5–14(–25) cm, with gray, soft, curly to retrorsely crispate pubescence, rarely glandular.

ascending, decumbent at base, branched, shortly rhizomatous, to 80 cm, softly pubescent, ± glandular, at least distally, rarely subglabrous.

Leaves

blade spatulate or narrowly lanceolate to oblanceolate, sometimes broadly so, 4–7(–10) cm × 8–12(–20) mm, reduced toward base, apex acute, pubescent on both surfaces, especially on midrib;

subterranean bractlike, papery.

sessile at mid and distal stem, petiolate to spatulate proximally;

petiole equaling or longer than blade of basal leaves;

blade ovate to elliptic, 3–13 cm × 10–50 mm (not including petiole), apex acute to acuminate, sparingly pubescent, densely so on abaxial midrib.

Inflorescences

reduced to single, terminal flower or open, (1–)3–5(–9)-flowered cyme, bracteate;

bracts leaflike, reduced distally to ca. 1 cm.

dichasial cymes, several- to many-flowered, open, bracteate;

bracts lanceolate, 4–20 × 2–7 mm, herbaceous, softly hairy throughout with long-septate hairs, not glandular, or with some glandular hairs.

Pedicels

ascending, straight, 1–6 cm, with a short canescence.

ascending, 0.2–3 cm, usually shorter than calyx.

Flowers

calyx 10-veined, broadly tubular in flower, 12–25  5–8 mm, turbinate in fruit and swelling in middle to ca. 10 mm broad, canescent, rarely sparsely pubescent or glandular;

lobes lanceolate, 4–7 mm, with narrow, membranous margins, apex acute;

corolla coral pink or white, clawed, claw equaling calyx;

limb 4-lobed, usually deeply so, rarely 2-lobed with smaller lateral teeth, lobes 7–22 mm, appendages 2, linear, 1.5–3.5 mm (absent in subsp. bolanderi);

stamens slightly longer than corolla claw;

stigmas 3, slightly longer than corolla claw.

unisexual, some plants having only staminate flowers, others having only pistillate flowers, 20–25 mm diam.;

calyx 8–12-veined, campanulate, narrowly so in staminate flowers, broadly in pistillate, 10–15 × to 7 mm in flower, 11 mm broad in fruit, herbaceous, margins dentate, softly pubescent, lobes 5, erect, lanceolate, 2–3 mm;

petals bright pink, clawed, claw equaling or longer than calyx, limb spreading horizontally, broadly obovate, unlobed or 2-lobed, to 12 × 12 mm, appendages 4, ca. 1 mm;

stamens and stigmas equaling petal claw;

styles 5.

Capsules

ovoid to oblong, equaling calyx, dehiscing by 6 teeth;

carpophore 2–5 mm.

broadly ovoid to globose, equaling and often splitting calyx, opening by 5 (splitting into 10) revolute teeth;

carpophore absent.

Seeds

dark brown to black, reniform, ca. 2 mm broad, with concentric rings of small papillae.

dark brown to black, broadly reniform, plump, 1–1.6 mm, densely and evenly papillate.

2n

= 24.

Silene hookeri

Silene dioica

Phenology Flowering summer.
Habitat Woodlands, hedges, gardens, riverbanks, open waste places
Elevation 0-500 m (0-1600 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
CT; IA; IL; MA; MD; ME; MT; NH; NJ; NY; OH; OR; PA; RI; SD; VT; WA; WI; BC; MB; NB; NF; NS; ON; QC; Europe [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

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

Silene dioica is closely related to S. latifolia and completely interfertile with it. The two species hybridize wherever they grow in close proximity, and the offspring (S. hampeana Meusel & K. Werner) usually have pale pink flowers. Silene dioica and S. latifolia are difficult to separate in herbarium material unless flower color has been noted. The characters that distinguish S. dioica are the usually dense, long, and soft pubescence covering at least the distal portion of the plant; the broad, almost globose, thin, and brittle capsule with revolute teeth; and the softer, thinner, usually broader leaves. Occasionally, double-flowered plants are encountered as garden escapes.

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

Key
1. Corolla lobes either 4 of unequal size or 2 with lateral teeth, lobes lanceolate to broadly oblong, 5-10 mm, corolla coral pink or white, appendages 2, 1.5-3.5 mm, linear
subsp. hookeri
1. Corolla lobes 4, equal, linear, 15-25 mm, corolla white with greenish center, appendages absent
subsp. bolanderi
Source FNA vol. 5, p. 186. FNA vol. 5, p. 181.
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. 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. 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
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. 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. 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
Subordinate taxa
S. hookeri subsp. bolanderi, S. hookeri subsp. hookeri
Synonyms Lychnis dioica, Lychnis rubra, Melandrium dioicum, Melandrium dioicum subsp. rubrum, Melandrium rubrum
Name authority Nuttall: in J. Torrey and A. Gray, Fl. N. Amer. 1: 193. (1838) (Linnaeus) Clairville: Man. Herbor. Suisse, 146. (1811)
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