Vasilis Teodoridis:
Saxifragaceae | Hydrangea
15. Hydrangea stylosa J. D. Hooker & Thomson; J. Proc. Linn. Soc.; Bot. 2: 75. 1858.
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Hydrangea macrophylla (Thunberg) Seringe subsp. stylosa (J. D. Hooker & Thomson) E. M. McClintock; H. taronensis Handel-Mazzetti.
Shrubs ca. 1.5 m tall. First years branchlets sparsely pubescent. Second years branchlets gray-white. Petiole 1.5-3 cm; brownish pubescent; leaf blade elliptic; 6-14 x 3-7 cm; papery; both surfaces glabrous or midvein crisped pubescent; secondary veins 6-8 on both sides of midvein; abaxially slightly prominent; base cuneate to subrounded; margin serrate; apex shortly acuminate. Inflorescences corymbose cymes; 5-10 cm wide; apex truncate; peduncle 3-7 cm; branches 3; subequal; brownish pubescent. Sterile flowers with sepals 3 or 4; broadly ovate to broadly elliptic; unequal; 0.5-2 cm; margin few denticulate. Fertile flowers with calyx tube campanulate; teeth ovate to suborbicular; 1-1.5 mm; apex obtuse. Petals reflexed after flowering; blue; oblong; slightly unequal; 2.5-3.5 mm. Stamens 10; subequal; longer ones longer than petals; anthers blue; oblong; ca. 1 mm. Ovary ca. 1/3 superior. Styles 3-5; spreading; slender; 2.5-3 mm in fruit; stigmas capitate; small. Capsule subglobose; ca. 2.7 mm in diam.; projected apical part ca. 1 mm; ca. 1/3 as long as capsule body. Seeds brown; ellipsoid to oblong; 0.5-0.8 mm; shortly winged at one or both ends; seed coat net veined. Fl. Jun-Jul; fr. Sep-Oct.
Dense forests; 2700-3000 m. W Yunnan [Bhutan; Myanmar; Sikkim].