Comments
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One of the present authors (Bartholomew) believes that this species is not distinct from Hydrangea coenobialis.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Shrubs ca. 1.5 m tall. Branchlets terete; bark white, peeled off into fragments when old. Petiole thin, 0.5-1 cm, abaxially appressed pilose; leaf blade abaxially slightly glossy and pearly gray when dry, adaxially yellowish, ovate to elliptic, 5-12 × 2.5-5 cm, membranous, both surfaces glabrous or sparsely appressed pubescent along veins, secondary veins 7-9 on both sides of midvein, thin, abaxially elevated, base broadly cuneate to obtuse, margin sparsely serrulate, apex shortly caudate-acuminate. Inflorescences corymbose cymes, ca. 7 cm wide, apex slightly arcuate; peduncle present; branches thick, densely crisped pubescent. Sterile flowers absent. Fertile flowers unknown. Capsule subglobose, 3-4 mm in diam., projected apical part longer than calyx tube; persistent calyx tube shallowly cupular, 1-2 mm, teeth lanceolate to triangular, 0.8-1.5 mm; persistent styles 3, ca. 1.5 mm, stigmas curved outward, decurrent. Seeds brownish, wingless; seed coat net veined. Fr. Jul-Aug.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Shrubs 1-3 m tall. Branches purple-red to dark purple-red, terete, thick, glabrous; bark peeled off into fragments when old. Petiole thick, 1-2 cm, glabrous; leaf blade abaxially greenish, adaxially dark green, ovate-lanceolate, lanceolate, or elliptic, 9-20 × 2.5-5 cm, papery to thickly so, abaxially sparsely appressed puberulous, adaxially glabrous, secondary veins 8-11 on both sides of midvein, abaxially elevated, base obtuse to broadly cuneate, margin serrulate to long sharply serrate, apex acuminate to caudate-acuminate. Inflorescences corymbose cymes, 7-12 cm wide, apex truncate to slightly arcuate; branches 3, thick, densely pubescent. Sterile flowers absent. Fertile flowers with calyx tube funnelform, ca. 1.5 × 2 mm; teeth ovate to ovate-triangular, ca. 1 mm. Petals yellowish, oblanceolate to obovate-oblanceolate, 2.5-4 × 1-1.2 mm. Stamens 8, subequal, ca. 3 mm; anthers oblong, 1-1.5 mm. Ovary ca. 1/2 superior. Styles 3, erect or slightly spreading, ca. 2 mm in fruit; stigmas hemispheric, enlarged. Capsule cupular, 3.5-4 mm in diam., projected apical part 2-2.5 mm, subequaling calyx tube; pedicel 0.6-1.4 cm. Seeds brownish, obovoid to subglobose, ca. 0.5 × 0.4-0.5 mm, wingless; seed coat net veined. Fl. May, fr. Sep.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
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S Guangxi (Shiwan Dashan).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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* Dense forests in valleys; ca. 1000 m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
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* Stream banks in dense to sparse valley forests, trailsides on mountain slopes; 200-800 m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Hydrangea coenobialis var. acutidens Chun; H. stenophylla Merrill & Chun var. decorticata Chun.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA