Silene rotundifolia |
Silene spaldingii |
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round-leaf catchfly |
Spalding's campion, Spalding's catchfly, Spalding's catchfly or campion, Spalding's silene |
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Habit | Plants perennial; taproot stout, fleshy; caudex branched. | Plants perennial, viscid; taproot stout; caudex branched, woody, producing several to many shoots. |
Stems | several, straggling to erect, freely branched, 2–7 cm, pilose and glandular, sparsely so proximally. |
erect, branched, leafy, 20–60 cm, villose-tomentose, viscid-glandular. |
Leaves | basal leaves withered at time of flowering, distal sessile, proximal petiolate, largest on mid to distal stem; blade subrotund to broadly ovate-lanceolate, 3–10 cm × 20–70 mm, base cuneate into petiole, apex short-acuminate, sparsely short-pilose. |
2 per node, connate proximally, sessile, largest in mid stem; blade lanceolate, 3–7 cm × 5–15 mm, apex acute, glandular-tomentose throughout. |
Inflorescences | cymose, open, few-flowered, leafy, bracteate; bracts resembling distal leaves. |
open, leafy cymes, bracteate, viscid and glandular-tomentose, branches ascending, mostly floriferous, flowers terminal and at distal nodes; bracts leaflike, 5–30 mm. |
Pedicels | 1–3(–4) cm, viscid, with long septate-glandular hairs. |
shorter than calyx. |
Flowers | calyx indistinctly veined, tubular, broadened distally, constricted towards base around carpophore, ± umbilicate, 20–25 × 5–8 mm, herbaceous, glandular-pilose, lobes triangular, 3–4 mm, margins narrow, membranous, ciliate; corolla scarlet, clawed, claw equaling calyx, limb deeply 2-lobed, 10–15 mm, lobes lanceolate, sometimes with 2 smaller lateral teeth, ciliate, appendages saccate, 1–1.5 mm, with clear area abaxially; stamens shortly exserted; styles 3, shortly exserted. |
calyx obscurely 10-veined, tubular-campanulate, 10–15 × 4–5 mm in flower, becoming clavate and 15–20 × 6–8 mm in fruit, narrowed toward base around carpophore, herbaceous, viscid-pubescent, veins more distinct at base, without conspicuous pale commissures, lobes narrowly lanceolate, 3–6 mm, margins very narrow, membranous, apex blunt; corolla greenish white, clawed, claw equaling calyx, widened distally, limb emarginate, 2 × 4 mm, appendages 4(–6), ca. 0.5 mm; stamens equaling petals; styles 3, equaling petals. |
Capsules | narrowly ellipsoid, not distending calyx, included within it, opening by 6 teeth; carpophore 6–8 mm. |
ellipsoid, slightly longer than calyx, opening by 6 teeth; carpophore 1.5–2.5 mm. |
Seeds | gray, broadly reniform, plump, ca. 1 mm, shallowly papillate. |
yellowish brown, winged, reniform, ca. 2 mm, rugose; wing broad, wrinkled. |
2n | = 48. |
= 48. |
Silene rotundifolia |
Silene spaldingii |
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Phenology | Flowering late spring–summer. | Flowering summer. |
Habitat | Woodlands, partially shaded cliffs and bluffs | Mixed prairie and ponderosa pine forests in swales and on dry hillsides |
Elevation | 200-600 m (700-2000 ft) | 800-1100 m (2600-3600 ft) |
Distribution |
AL; GA; KY; OH; TN; WV
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ID; MT; OR; WA; BC
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Discussion | Silene rotundifolia is clearly related to S. laciniata but is a well-marked species of the deciduous forest region. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 201. | FNA vol. 5, p. 207. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Melandrium rotundifolium | |
Name authority | Nuttall: Gen. N. Amer. Pl. 1: 288. (1818) | S. Watson: Proc. Amer. Acad. Arts 10: 344. (1875) |
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