Silene suksdorfii |
Silene rotundifolia |
|
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Cascade alpine campion, Cascade alpine catchfly, Cascade catchfly, Suksdorf's catchfly, Suksdorf's silene |
round-leaf catchfly |
|
Habit | Plants perennial, cespitose, with decumbent subterranean shoots; taproot stout; caudex branched, woody. | Plants perennial; taproot stout, fleshy; caudex branched. |
Stems | numerous, erect, simple, 3–15 cm, pubescent, viscid-glandular distally. |
several, straggling to erect, freely branched, 2–7 cm, pilose and glandular, sparsely so proximally. |
Leaves | mostly basal, densely tufted; basal numerous, pseudopetiolate, blade narrowly oblanceolate, tapering into base, 0.5–3 cm × 1.5–4 mm, ± fleshy, apex acute, puberulent; cauline in 1–3 pairs, ± sessile, reduced, blade narrowly oblanceolate to linear-lanceolate, 0.7–2 cm × 1–3 mm, apex acute, puberulent. |
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. |
Inflorescences | flowers terminal, solitary, or in single dichotomy, bracteate; bracts leaflike, 3–15 mm. |
cymose, open, few-flowered, leafy, bracteate; bracts resembling distal leaves. |
Pedicels | erect, ca. equaling calyx, viscid glandular-pubescent, hairs with purple septa. |
1–3(–4) cm, viscid, with long septate-glandular hairs. |
Flowers | calyx prominently 10-veined, campanulate, not contracted proximally around carpophore, 10–15 × 5–7 mm, papery, veins parallel, purplish, with pale commissures, with purple-septate glandular hairs (rarely septa not purple), lobes ovate, ca. 2 mm, margins broad, membranous, apex obtuse; corolla off-white or tinged with dusky purple, clawed, claw equaling calyx, broadened distally, limb 2-lobed, 3–5 mm, appendages ca. 1 mm; stamens equaling calyx; styles 3(–4), equaling calyx. |
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. |
Capsules | equaling calyx, opening by 6 (or 8) teeth; carpophore 2.5–3.5 mm. |
narrowly ellipsoid, not distending calyx, included within it, opening by 6 teeth; carpophore 6–8 mm. |
Seeds | brown, broadly winged, reniform, 1–2 mm, rugose-tessellate. |
gray, broadly reniform, plump, ca. 1 mm, shallowly papillate. |
2n | = 48. |
= 48. |
Silene suksdorfii |
Silene rotundifolia |
|
Phenology | Flowering summer. | Flowering late spring–summer. |
Habitat | Alpine ridges, gravel slopes, talus | Woodlands, partially shaded cliffs and bluffs |
Elevation | 1600-3000 m (5200-9800 ft) | 200-600 m (700-2000 ft) |
Distribution |
CA; OR; WA
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AL; GA; KY; OH; TN; WV
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Discussion | Silene suksdorfii appears to be closely related to S. parryi but differs in its broadly winged seeds, smaller size, cespitose habit, and the prominent purple-septate hairs of the calyx, although the latter occasionally are present in S. parryi. It is very similar to, and in Idaho appears to intergrade with, another alpine species, S. sargentii, which has linear leaves and lacks the purple septa in the hairs and the broad wing on the seeds. It is similar also to S. hitchguirei; see discussion under that species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 5, p. 209. | FNA vol. 5, p. 201. |
Parent taxa | Caryophyllaceae > subfam. Caryophylloideae > Silene | Caryophyllaceae > subfam. Caryophylloideae > Silene |
Sibling taxa | ||
Synonyms | Melandrium rotundifolium | |
Name authority | B. L. Robinson: Bot. Gaz. 16: 44, plate 6, figs. 9–11. (1891) | Nuttall: Gen. N. Amer. Pl. 1: 288. (1818) |
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