Silene uralensis subsp. porsildii


Candollea 22: 27. 1967.

Common names: Large-seeded nodding campion
Basionym: Melandrium macrospermum A. E. Porsild Rhodora 41: 225, plate 552, figs. 1–3. 1939
Synonyms: Gastrolychnis macrosperma (A. E. Porsild) Tolmatchew & Kozhanchikov Gastrolychnis soczaviana (Schischkin) Tolmatchew & Kozhanchikov Lychnis apetala var. macrosperma (A. E. Porsild) B. Boivin Lychnis macrosperma (A. E. Porsild) J. P. Anderson Melandrium soczavianum Schischkin Silene macrosperma (A. E. Porsild) Hultén Silene soczaviana (Schischkin) Bocquet
Treatment appears in FNA Volume 5. Treatment on page 211. Mentioned on page 168, 210.

Plants cespitose; taproot stout. Stems erect, simple or branched, stout, 10–35 cm, densely pubescent with long, purple-septate, eglandular and glandular hairs. Leaves: basal numerous, blade 1.5–6 cm × 3–7 mm, somewhat fleshy, subglabrous; cauline in 1–3 pairs, blade narrowly lanceolate, 1.5–4 cm × 1–5 mm. Inflorescences sometimes forked, 1–3(–4)-flowered. Pedicels erect or angled in flower and erect in fruit, stout, usually elongate, 1–10 cm, densely glandular-pubescent with long purple-septate hairs, ± viscid. Flowers erect; calyx veined, ovate-elliptic to broadly campanulate, 11–14(–18) × 8–13 mm, veins brown or purple, densely glandular-pubescent with purple-septate hairs, lobes ovate-triangular, 2–3 mm, margins broad, membranous; corolla dingy purple-red, 11/3–11/2 times length of calyx, claw equaling calyx, limb obovate, 2-lobed, 2–4 mm. Capsules not contracted at mouth, equaling calyx; carpophore 1–2 mm. Seeds sooty brown, winged, round, flat, 2–2.5 mm diam.; wing inflated, broad, strongly rugose. 2n = 48.

Phenology: Flowering summer.
Habitat: Tundra, gravel slopes, talus, cliffs
Elevation: 0-2500 m


V5 431-distribution-map.gif

Yukon, Alaska, Asia (Russian Far East, Siberia).


The usually branched stout stems, erect flowers, broad capsule, and very large seeds with broad rugose wing distinguish subsp. porsildii.

Selected References


Lower Taxa

John K. Morton +
Bocquet +
Melandrium macrospermum +
Large-seeded nodding campion +
Yukon +, Alaska +, Asia (Russian Far East +  and Siberia). +
0-2500 m +
Tundra, gravel slopes, talus, cliffs +
Flowering summer. +
Illustrated +
Gastrolychnis macrosperma +, Gastrolychnis soczaviana +, Lychnis apetala var. macrosperma +, Lychnis macrosperma +, Melandrium soczavianum +, Silene macrosperma +  and Silene soczaviana +
Silene uralensis subsp. porsildii +
Silene uralensis +
subspecies +