Silene csereii |
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Balkan campion, Balkan catchfly, biennial campion, silène bisannuel |
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Habit | Plants annual or biennial, glabrous and somewhat glaucous; tap-root stout. |
Stems | erect, sparingly branched below inflorescence, robust, to 65 cm. |
Leaves | basal few, usually withering by time of anthesis, blade spatulate; cauline numerous, 2 per node, blade 1-veined, ovate-lanceolate to oblanceolate, 3–7 cm × 7–30 mm, margins entire, apex acute. |
Inflorescences | many-flowered, open, bracteate; primary branches racemose, elongate, with sessile or shortly pedunculate cymes of 1–6 flowers per node; bracts narrowly lanceolate, 3–12 mm, hyaline-margined, apex acute. |
Pedicels | ascending, ± straight, 1–2 times calyx, broadening at calyx base. |
Flowers | calyx often obscurely ca. 20-veined, elliptic, abruptly contracted at base, opening constricted to 1/2 its diam., slightly inflated in flower, 7–10 × 3–4 mm, in fruit tightly enveloping capsule, ovoid, thin, enlarging to 9–13 × 5–7 mm, herbaceous, margins narrow, membranous, dentate with broadly triangular lobes to 1 mm, glabrous, veins obscure, usually purple tinged, without conspicuous, pale commissures, longitudinal, parallel, not obviously reticulate; petals white, clawed, claw equaling calyx, limb deeply 2-fid into 2 spatulate lobes, to 5 mm, appendages ca. 0.5 mm; stamens exserted, to 2 times length of calyx; filaments usually dark purple; stigmas 3, exserted, to 2 times length of calyx. |
Capsules | ovoid, equaling calyx and sometimes splitting it, opening by 6 recurved, narrowly lanceolate teeth; carpophore ca. 1 mm. |
Seeds | grayish brown, plump, broadly reniform, 0.6–1 mm, with concentric rings of papillae; papillae slightly longer than broad. |
2n | = 24. |
Silene csereii |
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Phenology | Flowering summer. |
Habitat | Cultivated fields, roadsides, waste land |
Elevation | 0-1600 m (0-5200 ft) |
Distribution |
CO; CT; IA; ID; IL; IN; MA; MD; ME; MI; MN; MO; MT; NC; ND; NH; NY; OH; PA; SD; VT; WA; WI; WY; AB; BC; MB; ON; QC; SK; Europe [Introduced in North America]
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Discussion | Often confused with Silene vulgaris, S. csereii may be readily separated by the long, racemose primary branches of its inflorescence, the elliptic calyx that is constricted at both ends, tightly enclosing the capsule and lacking obvious reticulate venation, and the purple filaments. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 180. |
Parent taxa | Caryophyllaceae > subfam. Caryophylloideae > Silene |
Sibling taxa | |
Name authority | Baumgarten: Enum. Stirp. Transsilv. 3: 345. (1816) |
Web links |
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