Vasilis Teodoridis:
Betulaceae | Corylus
3. Corylus yunnanensis (Franchet) A. Camus; Bull. Mus. Natl. Hist. Nat.; sér. 2. 1: 438. 1929.
?? dian zhen
Corylus heterophylla Fischer var. yunnanensis Franchet; J. Bot. (Morot) 13: 198. 1899.
Shrubs or small trees to 7 m tall; trunk to 10 cm d.b.h.; bark dark gray; fissured. Branchlets purplish brown or brown; densely tawny tomentose; stipitate glandular; glabrescent; with scattered; white lenticels. Petiole 7-12(-22) mm; densely tomentose; sparsely stipitate glandular; leaf blade ovate-orbicular to broadly ovate or obovate; 4-12 x 3-9 cm; papery; abaxially stipitate glandular when young; densely tomentose; adaxially sparsely pubescent especially along veins; base cordate; margin irregularly and doubly serrate; apex abruptly acuminate from suborbicular; apical portion of leaf; lateral veins 5-7 on each side of midvein. Male inflorescences 2 or 3 in a cluster; pendulous; cylindric; 2.5-3 cm; bracts ovate; densely gray tomentose. Female flowers 2 or 3 in a cluster; peduncle ca. 1 cm; tomentose; bracts campanulate; 1.3-2 cm; striate; densely yellow or gray tomentose; stipitate glandular; with triangular lobes. Nut ovoid-globose; 1.5-2 cm in diam.; densely tomentose. Fl. May-Jul; fr. Jul-Sep.
* Thickets on mountain slopes; 1600-3700 m. W Guizhou; Hubei; SW and W Sichuan; W Yunnan (Dali Xian)
Vasilis Teodoridis:
Betulaceae | Corylus
3. Corylus yunnanensis (Franchet) A. Camus; Bull. Mus. Natl. Hist. Nat.; sér. 2. 1: 438. 1929.
?? dian zhen
Corylus heterophylla Fischer var. yunnanensis Franchet; J. Bot. (Morot) 13: 198. 1899.
Shrubs or small trees to 7 m tall; trunk to 10 cm d.b.h.; bark dark gray; fissured. Branchlets purplish brown or brown; densely tawny tomentose; stipitate glandular; glabrescent; with scattered; white lenticels. Petiole 7-12(-22) mm; densely tomentose; sparsely stipitate glandular; leaf blade ovate-orbicular to broadly ovate or obovate; 4-12 x 3-9 cm; papery; abaxially stipitate glandular when young; densely tomentose; adaxially sparsely pubescent especially along veins; base cordate; margin irregularly and doubly serrate; apex abruptly acuminate from suborbicular; apical portion of leaf; lateral veins 5-7 on each side of midvein. Male inflorescences 2 or 3 in a cluster; pendulous; cylindric; 2.5-3 cm; bracts ovate; densely gray tomentose. Female flowers 2 or 3 in a cluster; peduncle ca. 1 cm; tomentose; bracts campanulate; 1.3-2 cm; striate; densely yellow or gray tomentose; stipitate glandular; with triangular lobes. Nut ovoid-globose; 1.5-2 cm in diam.; densely tomentose. Fl. May-Jul; fr. Jul-Sep.
* Thickets on mountain slopes; 1600-3700 m. W Guizhou; Hubei; SW and W Sichuan; W Yunnan (Dali Xian)