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FNA | Family List | FNA Vol. 9 | Rosaceae | Cotoneaster

30. Cotoneaster sternianus (Turrill) Boom, Jaarb. Ned. Dendrol. Ver. 20: 81. 1957.

Stern’s cotoneaster

Cotoneaster franchetii Bois var. sternianus Turrill, Bot. Mag. 167: plate 130. 1950 (as sterniana)

Shrubs, 1.5–4 m. Stems erect, arching, ˂stiff˃; branches distichous, maroon, whitish tomentose-pilose. Leaves persistent; petiole 4–6 mm, tomentose-pilose; blade elliptic to broadly ovate, (18–)25–52(–56) x (12–)16–28(–34) mm, coriaceous, base obtuse or cuneate, margins recurved, veins 4–6, deeply sunken, apex acute or acuminate, abaxial surfaces whitish tomentose, adaxial dark green, slightly shiny, not glaucous, on vigorous shoots usually bulging slightly between lateral veins (unless shaded), very rugose, pilose. Inflorescences on fertile shoots 25–70 mm with 3–5 leaves, 7–20-flowered, compact. Pedicels 1–4 mm, tomentose-pilose. Flowers (5–)6–7.5 mm, opening small; hypanthium cupulate, silky tomentose; sepals: margins villous, ˂borders purple, glabrous˃, apex acute or acuminate, surfaces silky tomentose; petals erect-incurved, pink to red, base dark red (with minute black dots), margins erect-incurved, pink or white; stamens 20, filaments red, distally pink or whitish, anthers white, ˂sutures pink-tinged˃; styles (2 or)3 or 4(or 5). Pomes bright orange, eventually orange-red, subglobose to depressed-globose or globose, 6–10 x 6–10 mm, ˂base rounded˃, shiny, not glaucous, pilose; sepals flat, tomentose; forming 5-pointed star over closed navel; style remnants 3/4 from base. Pyrenes (2 or)3 or 4(or 5).

Flowering Jun–Jul; fruiting Oct–Jan. Mossy cliffs, thickets, hedges, urban waste ground; 0–200 m; introduced; B.C.; Asia (China, Myanmar); introduced also in Europe, Pacific Islands (New Zealand).

Cotoneaster sternianus is similar to C. franchetii, a species with more elongated pomes, uniformly pink or purple anthers, and less textured leaves.


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