Silene dioica |
Silene rectiramea |
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red campion, red catchfly, silène dioïque |
Grand Canyon campion |
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Habit | Plants perennial; taproot slender. | Plants perennial; taproot stout; caudex much-branched, woody. |
Stems | ascending, decumbent at base, branched, shortly rhizomatous, to 80 cm, softly pubescent, ± glandular, at least distally, rarely subglabrous. |
several, erect from decumbent base, branched, 20–40 cm, sparsely scabrid-puberulent, stipitate-glandular distally. |
Leaves | 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. |
2 per node; basal shortly petiolate, blade oblanceolate, apex acute, sparsely puberulent; cauline sessile, in 3–6 pairs, blade lanceolate to narrowly elliptic-lanceolate, 3–8 cm × 3–8 mm, apex acute, scabrid-puberulent. |
Inflorescences | 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. |
cymose, open, branches few, ascending, elongate, 5–10 cm, flowers 1–3 per branch, bracteate; bracts lanceolate, 3–5 mm, apex acute. |
Pedicels | ascending, 0.2–3 cm, usually shorter than calyx. |
usually shorter than or to 11/2 times calyx, scabrous-puberulent, ± viscid. |
Flowers | 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. |
bisexual and unisexual, all flowers having bisexual flowers and staminate unisexual flowers, 6–8 mm diam.; calyx prominently 10-veined, narrowly campanulate in flower, campanulate in fruit, 7–10(–11) × 4–6 mm, only slightly contracted around carpophore, papery and membranous, sparsely scabrid with short glandular-setose hairs, veins parallel, green, with pale commissures, margins dentate, lobes broadly ovate (as broad as long), 1–2 mm, not ciliate; corolla cream or white, tinged purple, claw slightly exceeding calyx, narrowly triangular, auriculate, puberulent at base, limb oblong, 2-lobed, 2–4 mm, lobes entire, appendages 0.1–0.5 mm and broad, entire; stamens equaling petals; styles 3, equaling petals, reduced in functionally staminate flowers. |
Capsules | broadly ovoid to globose, equaling and often splitting calyx, opening by 5 (splitting into 10) revolute teeth; carpophore absent. |
ovoid-ellipsoid, equaling calyx, opening by 6 spreading teeth; carpophore ca. 2 mm. |
Seeds | dark brown to black, broadly reniform, plump, 1–1.6 mm, densely and evenly papillate. |
brown, reniform-triangular, ca. 1 mm; papillate mainly around margin. |
2n | = 24. |
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Silene dioica |
Silene rectiramea |
|
Phenology | Flowering summer. | Flowering April-May. |
Habitat | Woodlands, hedges, gardens, riverbanks, open waste places | Pinyon pine woodland, dry slopes |
Elevation | 0-500 m (0-1600 ft) | 1800-2100 m (5900-6900 ft) |
Distribution |
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]
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AZ |
Discussion | 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.) |
Of conservation concern. Silene rectiramea is found in the Grand Canyon in Arizona. It is very similar to forms of S. verecunda and to S. thurberi. It is distinguished by its smaller flowers and fruiting calyces that are not or only slightly constricted around the carpophore and tend to be more sparsely pubescent with broader, shorter lobes. Also the appendages smaller and entire. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 181. | FNA vol. 5, p. 200. |
Parent taxa | Caryophyllaceae > subfam. Caryophylloideae > Silene | Caryophyllaceae > subfam. Caryophylloideae > Silene |
Sibling taxa | ||
Synonyms | Lychnis dioica, Lychnis rubra, Melandrium dioicum, Melandrium dioicum subsp. rubrum, Melandrium rubrum | |
Name authority | (Linnaeus) Clairville: Man. Herbor. Suisse, 146. (1811) | B. L. Robinson: Bot. Gaz. 28: 134. (1899) |
Web links |