1 |
Style conspicuously clavate. |
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(2) |
+ |
Style cylindrical or slightly expanded at apex, not clavate. |
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(6) |
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2 (1) |
Deciduous shrub; leaves lanceolate to elliptic, rarely narrowly elliptic, veins (2 or)3(or 4). |
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13 Cornus quinquenervis |
+ |
Deciduous tree; leaves elliptic or ovate-elliptic to broadly ovate, veins (3 or)4(or 5) or 5–8. |
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(3) |
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3 (2) |
Leaf veins 5–8. |
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9 Cornus macrophylla |
+ |
Leaf veins (3 or)4(or 5). |
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(4) |
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4 (3) |
Bark light brown; leaf base rounded, rarely oblique; flowers smaller, ca. 5.2 mm in diam. |
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6 Cornus coreana |
+ |
Bark dark gray or dark brown; leaf base cuneate to broadly cuneate, often oblique; flowers 7–9.5 mm in diam. |
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(5) |
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5 (4) |
Abaxial surface of leaves grayish green, pubescent with fine, appressed trichomes, veins 4; petiole 1.2–2.2 cm; inflorescences loose, branches spreading, often arched toward center; calyx teeth longer than disk. |
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8 Cornus koehneana |
+ |
Abaxial surface of leaves light green, pubescent with thick appressed trichomes, scabrous, veins
(3 or)4 or 5; petiole (0.8–)3.5 cm; inflorescences dense, compact, branches straight, rarely arched; calyx teeth equal to disk. |
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16 Cornus walteri |
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6 (1) |
Shrub, spreading; fruit creamy white or light blue at maturity; stone of fruit laterally compressed. |
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3 Cornus alba |
+ |
Shrub or tree; fruit bluish black or black at maturity; stone of fruit not laterally compressed. |
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(7) |
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7 (6) |
Leaves leathery; stigma smaller than or subequaling style in diam. |
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(8) |
+ |
Leaves papery; stigma obviously larger than style, rarely smaller than style in diam. |
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(9) |
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8 (7) |
Leaves broadly elliptic, lateral veins 3(or 4), conspicuous, smaller veins conspicuous; flowers
ca. 9 mm in diam. |
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10 Cornus oligophlebia |
+ |
Leaves elliptic, lateral veins 4 or 5, inconspicuous, smaller veins obscure; flowers ca. 7 mm in diam. |
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4 Cornus austrosinensis |
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9 (7) |
Leaf veins 3; flowers ca. 4.5 mm in diam.; stigma smaller than or equaling style in diam., punctiform. |
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12 Cornus parviflora |
+ |
Leaf veins (2 or)3–8(or 9); flowers 7–9 mm in diam.; stigma broader than style, not punctiform. |
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(10) |
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10 (9) |
Abaxial surface of leaves conspicuously pubescent with ± curly or non-curly soft, raised trichomes (trichomes Y-shaped, V-shaped, or pseudofiliform). |
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(11) |
+ |
Abaxial surface of leaves conspicuously pubescent with short, appressed trichomes, without raised trichomes except sometimes in axils of veins. |
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(13) |
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11 (10) |
Lateral veins thin, tertiary veins inconspicuous. |
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5 Cornus bretschneideri |
+ |
Lateral veins thick, tertiary veins conspicuous. |
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(12) |
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12 (11) |
Veins 5–7, with dense yellowish trichomes; inflorescences loose corymbose cymes, nearly glabrous at anthesis; branches of inflorescences arched inward; flowers sessile or shortly pedicellate, pedicel thick, to 2 mm. |
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15 Cornus ulotricha |
+ |
Veins 5–8(or 9); both veins and interveinal areas of abaxial surface with dense
yellowish, grayish, or brown trichomes; inflorescences corymbose or paniculate cymes, densely pubescent at anthesis; branches of inflorescences straight; flowers pedicellate, pedicel slender, 0.5–6 mm. |
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14 Cornus schindleri |
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13 (10) |
Leaf veins 3 or 4(or 5). |
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17 Cornus wilsoniana |
+ |
Leaf veins (5 or)6–8(or 9). |
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(14) |
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14 (13) |
Leaves 6–17 cm; inflorescences loose, paniculate or corymbose cymes; filaments thick, equaling or slightly exceeding petals; style slightly thickened at apex, appearing subclavate. |
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9 Cornus macrophylla |
+ |
Leaves 4.5–12 cm; inflorescences compact, convex corymbose cymes; filaments slender, longer than petals; style cylindrical, not subclavate. |
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(15) |
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15 (14) |
Old branches light yellow; abaxial surface of leaves grayish white, inconspicuously papillate; small veins inconspicuous. |
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5 Cornus bretschneideri |
+ |
Old branches red, reddish brown, purplish red, or brown; abaxial surface of leaves grayish green, conspicuously papillate; small veins conspicuous. |
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(16) |
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16 (15) |
Abaxial surface of leaves with blackish streaks; flowers white. |
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11 Cornus papillosa |
+ |
Abaxial surface of leaves without blackish streaks; flowers white or yellowish. |
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7 Cornus hemsleyi |
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