Hydrangea cinerea


Bull. Torrey Bot. Club 25: 148. 1898.

Common names: Ashy hydrangea
Synonyms: Hydrangea arborescens var. deamii H. St. John H. arborescens subsp. discolor (Seringe) E. M. McClintock H. arborescens var. discolor Seringe
Treatment appears in FNA Volume 12. Treatment on page 487. Mentioned on page 488.

Shrubs, 10–30 dm. Twigs sparsely hirsute to pilose, trichomes white. Leaves opposite; petiole 0.8–8.6 cm, sparsely to densely hirsute abaxially, densely hirsute adaxially; blade ovate, elliptic-ovate, or broadly ovate, (2.5–)4.2–14.9 × (1.7–)2.1–12 cm, unlobed, base cordate, truncate, or cuneate, margins dentate to serrate, apex acute to acuminate, abaxial surface grayish, uniformly velutinous, pilose, or tomentose, trichomes at 40× conspicuously tuberculate, 0.3–1 mm, adaxial surface green, sparsely hirsute. Inflorescences compact, 150–500-flowered, dome-shaped to hemispheric, 3.5–14.5 × 3–16.5 cm; peduncle 0.5–6 cm, sparsely to densely tomentose. Pedicels 0.8–2.8 mm, glabrous or sparsely to densely hirsute. Sterile flowers absent or present, white or greenish white, tube 4–21 mm, lobes 3–4(–5), obovate to broadly ovate, round, or elliptic, 6.5–15 × 2.5–14 mm. Bisexual flowers: hypanthium usually adnate to ovary to near its apex, rarely ca. 2/3 up ovary, 0.7–1 × 0.8–1.2 mm, strongly 8–10-ribbed in fruit, glabrous; sepals deltate to triangular, 0.3–0.5 × 0.3–0.6 mm, margins entire, apex acute to acuminate, abaxial surface glabrous; petals caducous, white to yellowish white, elliptic to narrowly ovate, 1.2–1.5 × 0.7–1.1 mm; filaments 1.8–4.5 × 0.1–0.2 mm; anthers 0.3–0.5 mm; pistils 2(–3)-carpellate, ovary completely inferior or nearly so; styles 2(–3), distinct, 0.8–1.1 mm. Capsules hemispheric, (1.2–)1.5–2.3 × (1.2–)2–2.8 mm. Seeds 0.3–0.6(–0.8) mm. 2n = 36.

Phenology: Flowering May–Jul(–Aug).
Habitat: Deciduous upland and bottomland forests, shaded cliffs, ravines, streambeds.
Elevation: 100–700 m.


V12 302-distribution-map.jpg

Ala., Ark., Ga., Ill., Ind., Kans., Ky., Mass., Mo., N.C., Okla., S.C., Tenn.


Hydrangea cinerea has escaped from cultivation in Massachusetts.

The Cherokee used infusions of bark or roots as antiemetics, emetics, and cathartics, and as gynecological and liver aids (D. E. Moerman 1998).

Selected References


Lower Taxa

... more about "Hydrangea cinerea"
Craig C. Freeman +
Ashy hydrangea +
Ala. +, Ark. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, Mass. +, Mo. +, N.C. +, Okla. +, S.C. +  and Tenn. +
100–700 m. +
Deciduous upland and bottomland forests, shaded cliffs, ravines, streambeds. +
Flowering May–Jul(–Aug). +
Bull. Torrey Bot. Club +
Hydrangea arborescens var. deamii +, H. arborescens subsp. discolor +  and H. arborescens var. discolor +
Hydrangea cinerea +
Hydrangea +
species +