东北桤木

SPECIES

1. KingdomPlantae
2. PhylumTracheophyta
3. ClassMagnoliopsida
4. OrderFagales
5. FamilyBetulaceae

Shrubs or trees to 10 m tall; bark dark gray, smooth. Branchlets gray-brown, glabrous. Buds sessile, with 3-6 scales. Petiole robust, 0.5-2 cm, glabrous or sparsely pubescent, sometimes resinous glandular; leaf blade broadly ovate, ovate, elliptic, or broadly elliptic, 4-10 × 2.5-8 cm, both surfaces glabrous except bearded in axils of lateral veins abaxially, base rounded or subcordate, rarely broadly cuneate or unequal, margin densely minutely doubly or simply serrate, apex acute; lateral veins 7-13 on each side of midvein. Female inflorescences 3-6 in a raceme, oblong or globose, 1-2 cm; peduncles pendulous, 0.5-2(-3) cm, slender, glabrous or sparsely pubescent; bracts 3-4 mm, woody, base cuneate, apex rounded, 5-lobed. Nutlet ca. 2 mm, with membranous wings ca. as wide as nutlet. Fl. May-Jul, fr. Jul-Aug.

via GBIF · IUCN

Wikidata facts

Image

Alnus mandshurica Mantsurianleppä C IMG 3191.JPG