1 |
Fruit exocarp leathery, dehiscent when dry. |
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1 T. endochrysea |
+ |
Fruit exocarp woody or thickly leathery, indehiscent |
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(2) |
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2 (1) |
Exocarp thickly leathery, fragile; bract with stalk |
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(3) |
+ |
Exocarp woody, hard; bract sessile or with short stalk, basal 1/3-1/2 adnate to peduncle |
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(7) |
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3 (2) |
Leaf blade 4-6 cm; fruit 5-angled |
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(4) |
+ |
Leaf blade 5-10 cm; fruit not angled or only weakly so |
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(5) |
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4 (3) |
Cymes 5-8 cm; leaf blade apex usually 3-lobed; petaloid staminodes present; fruit obovoid. |
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15 T. mongolica |
+ |
Cymes 3-5 cm; leaf blade apex usually not lobed; staminodes absent; fruit ovoid. |
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16 T. amurensis |
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5 (3) |
Ovary glabrous; cymes (20-)40-100-flowered, with bracteoles. |
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19 T. jiaodongensis |
+ |
Ovary hairy; cymes 3-16-flowered, without bracteoles |
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(6) |
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6 (5) |
Leaf blade orbicular, brown when dry; fruit ovoid; sepals abaxially sparsely stellate hairy; pedicel 5-8 mm; bracts 3.5-6 cm. |
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17 T. japonica |
+ |
Leaf blade ovate or ovate-triangular, greenish when dry; fruit obovoid; sepals abaxially glabrous; pedicel 10-15 mm; bracts 5-8.5 cm. |
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18 T. paucicostata |
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7 (2) |
Fruit not angled, apex rounded |
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(8) |
+ |
Fruit prominently or weakly 5-angled, apex acute or obtuse |
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(15) |
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8 (7) |
Leaf blade margin entire or with a few teeth near apex. |
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10 T. tuan |
+ |
Leaf blade prominently serrate |
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(9) |
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9 (8) |
Bracts with stalk 5-8 cm |
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(10) |
+ |
Bracts usually sessile |
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(12) |
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10 (9) |
Leaf blade broadly ovate, abaxially hairy in vein axils only. |
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13 T. chingiana |
+ |
Leaf blade ovate, suborbicular, or ovate-oblong, abaxially uniformly tomentose or puberulent |
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(11) |
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11 (10) |
Branchlets hairy; bracts 12-16 cm. |
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10 T. tuan |
+ |
Branchlets glabrous; bracts 6-9 cm. |
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7 T. likiangensis |
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12 (9) |
Leaf blade submembranous, abaxially glabrous or hairy in axils of veins only. |
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11 T. membranacea |
+ |
Leaf blade thicker, not membranous, abaxially uniformly hairy |
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(13) |
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13 (12) |
Leaf blade marginal teeth awnlike, 1.5-5 mm; bracts 3.5-9 cm. |
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2 T. mandshurica |
+ |
Leaf blade marginal teeth smaller, not awnlike; bracts 8-12 cm |
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(14) |
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14 (13) |
Cymes 3-22-flowered; leaf blade base usually oblique. |
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10 T. tuan |
+ |
Cymes 3-12-flowered; leaf blade base symmetrically cordate. |
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12 T. miqueliana |
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15 (7) |
Old leaves abaxially glabrous or hairy in axils of veins only; branchlets glabrous or rarely hairy when very young |
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(16) |
+ |
Old leaves abaxially uniformly densely hairy; branchlets hairy or not |
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(20) |
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16 (15) |
Cymes 50-200-flowered. |
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14 T. taishanensis |
+ |
Cymes 1-15-flowered |
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(17) |
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17 (16) |
Bract with stalk 0.4-2 cm |
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(18) |
+ |
Bract sessile |
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(19) |
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18 (17) |
Leaf blade suborbicular, marginal teeth 3-5 mm; bracts 7-10 × 1-1.3 cm. |
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3 T. henryana |
+ |
Leaf blade broadly ovate, marginal teeth small and dense; bracts 6-6.5 × 1.5-1.8 cm. |
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8 T. callidonta |
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19 (17) |
Leaf blade (5.5-)10-14(-17) cm; fruit weakly 5-angled. |
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9 T. nobilis |
+ |
Leaf blade 5-10 cm; fruit prominently 5-angled. |
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4 T. chinensis |
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20 (15) |
Branchlets hairy |
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(21) |
+ |
Branchlets glabrous |
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(23) |
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21 (20) |
Leaf blade marginal teeth less than 1.5 mm, lateral veins 7-9 pairs; fruit ovoid-globose. |
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4 T. chinensis |
+ |
Leaf blade marginal teeth 1.5-5 mm, lateral veins 5-7 pairs; fruit globose or obovoid |
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(22) |
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22 (21) |
Branchlets and leaves yellow stellate tomentose; leaf blade orbicular, marginal teeth with long mucros 3-5 mm. |
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3 T. henryana |
+ |
Branchlets and leaves gray stellate tomentose; leaf blade ovate-orbicular, marginal teeth triangular. |
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2 T. mandshurica |
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23 (20) |
Leaf blade marginal teeth 3-5 mm; bract stalk 0.7-2 cm. |
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3 T. henryana |
+ |
Leaf blade marginal teeth less than 2 mm; bract stalk usually less than 5 mm |
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(24) |
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24 (23) |
Leaf blade broadly elliptic, abaxially tomentose; bracts sessile or subsessile |
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(25) |
+ |
Leaf blade ovate-oblong or obliquely ovate, abaxially puberulent or puberulent; bracts stalked |
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(26) |
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25 (24) |
Cymes 1-3-flowered; petals 8-9 mm. |
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4 T. chinensis |
+ |
Cymes 7-20-flowered; petals 6-7 mm. |
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5 T. oliveri |
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26 (24) |
Petiole glabrous, leaf margin deeply serrate, teeth extending into awns. |
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6 T. kueichouensis |
+ |
Petiole stellate pubescent, leaf margin serrulate. |
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7 T. likiangensis |