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2. Camellia sect. Thea (Linnaeus) Bentham & J. D. Hooker, Gen. Pl. 1(1): 187. 1862.
茶组 cha zu
Thea Linnaeus, Sp. Pl. 1: 515. 1753; Camellia sect. Glaberrimae Hung T. Chang; Theaphylla Rafinesque; Tsia Adanson.
Pedicel thick, thickened toward apex; bracteoles 2(or 3), caducous. Sepals persistent. Petals white, basally connate. Stamens numerous, in 4 or 5 whorls, glabrous; outer filament whorl basally connate into a tube. Ovary 3-5-loculed; style apically 3-5-parted or -lobed.
Twelve species: S China, NE India, S Japan, S Korea, Laos, Myanmar, Thailand, Vietnam; 11 species (nine endemic) in China.
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| 1 |
Ovary (3 or)4- or 5-loculed, style apically 5-lobed or 3-5-parted |
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(2) |
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Ovary 3-loculed, style apically 3-lobed or 3-parted |
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(6) |
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| 2 (1) |
Ovary tomentose |
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(3) |
| + |
Ovary glabrous |
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(4) |
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| 3 (2) |
Current year branchlets and leaf blades glabrous; pedicel, sepals outside, and petals glabrous; styles glabrous; capsule oblate, pericarp 1-2 mm thick. |
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14 C. taliensis |
| + |
Current year branchlets and leaf blades abaxially along midvein pubescent; pedicel sparsely pubescent or glabrous, sepals outside gray puberulent or glabrous, and petals farinose-puberulent; styles densely pubescent; capsule globose, pericarp 5-8 mm thick. |
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15 C. crassicolumna |
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| 4 (2) |
Petiole and pedicel pubescent. |
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12 C. grandibracteata |
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Petiole and pedicel glabrous |
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(5) |
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| 5 (4) |
Petiole ca. 5 mm; sepals 5-6 mm, margin ciliate. |
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11 C. tachangensis |
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Petiole 8-12 mm; sepals 7-10 mm, margin not ciliate. |
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13 C. kwangsiensis |
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| 6 (1) |
Ovary glabrous |
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(7) |
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Ovary pubescent, tomentose, or subglabrous |
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(9) |
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| 7 (6) |
Current year branchlets, terminal buds, and leaf blades abaxially pubescent; leaf blade reticulate veins slightly raised on both surfaces; sepals inside glabrous. |
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18 C. leptophylla |
| + |
Current year branchlets and leaf blades glabrous or sparsely yellow puberulent; leaf blade reticulate veins obscure on both surfaces; sepals inside sericeous |
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(8) |
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| 8 (7) |
Terminal buds pubescent; leaf blade elliptic to oblong-elliptic, 4-6.5 cm wide; pedicel 9-13 mm; sepals 6-8 mm; capsule 3-loculed, 5-8 cm in diam., pericarp 4-5 mm thick. |
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16 C. gymnogyna |
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Terminal buds glabrous; leaf blade oblong-elliptic to oblong-oblanceolate, 2.5-4 cm wide; pedicel 6-8 mm; sepals 2.5-4 mm; capsule 1- or 2-loculed, fertile, 1.5-2 cm in diam., pericarp ca. 1 mm thick. |
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17 C. costata |
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| 9 (6) |
Current year branchlets white pubescent; leaf blade 5-14 cm; sepals outside glabrous or sparsely pubescent, inside densely sericeous. |
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21 C. sinensis |
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Current year branchlets yellowish brown villous or grayish yellow pubescent; leaf blade 12-29 cm; sepals outside pubescent, inside glabrous |
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(10) |
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| 10 (9) |
Leaf blade elliptic to oblong-elliptic, 5.5-12.5 cm wide, midvein adaxially impressed; sepals 3-3.5 mm. |
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19 C. fangchengensis |
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Leaf blade oblong, (3-)4-6 cm wide, midvein adaxially flat; sepals 5-6 mm. |
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20 C. ptilophylla |
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List of lower taxa
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