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round-leaf catchfly

Spalding's campion, Spalding's catchfly, Spalding's catchfly or campion, Spalding's silene

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

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
from FNA
AL; GA; KY; OH; TN; WV
[WildflowerSearch map]
[BONAP county map]
from FNA
ID; MT; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
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 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. 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. 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. dioica, 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. stellata, S. subciliata, S. suecica, S. suksdorfii, S. thurberi, S. uralensis, S. verecunda, S. virginica, S. viscaria, S. vulgaris, S. williamsii, S. wrightii
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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