1 |
Female flowers without bracteoles; female part of spikes connected with or separated from male part |
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(2) |
+ |
Female flowers with bracteoles; female part of spikes separated from male part |
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(6) |
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2 (1) |
Female part of spikes not separated from male part |
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(3) |
+ |
Female part of spikes separated from male part |
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(4) |
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3 (2) |
Stigmas spatulate; hairs on stalk of female flowers ca. as long as style. |
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1 T. orientalis |
+ |
Stigmas lanceolate; hairs on stalk of female flowers shorter than style. |
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2 T. latifolia |
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4 (2) |
Stigmas linear, slender; axis of male part in spikes with brown hairs, hairs furcate or not. |
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3 T. przewalskii |
+ |
Stigmas spatulate; axis of male part in spikes with whitish or yellowish brown hairs, hairs not furcate |
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(5) |
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5 (4) |
Stems 1.5-2 m tall; hairs on stalk of female flowers shorter than style. |
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4 T. changbaiensis |
+ |
Stems 0.8-1.3 m tall; hairs on stalk of female flowers ca. as long as style. |
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5 T. laxmannii |
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6 (1) |
Stems less than 0.8 m, with sheathlike leaves at base |
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(7) |
+ |
Stems more than 1 m, without sheathlike leaves |
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(9) |
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7 (6) |
Axis of male part in spikes with hairs; leaves 2-4 mm wide. |
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12 T. lugdunensis |
+ |
Axis of male part in spikes without hairs; leaves 1-2 mm wide |
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(8) |
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8 (7) |
Hairs on stalk of female flowers swelling at tip, shorter than style. |
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10 T. minima |
+ |
Hairs on stalk of female flowers not swelling at tip, ca. as long as style. |
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11 T. pallida |
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9 (6) |
Bracteoles spatulate or subtriangular; stigmas lanceolate (to linear). |
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9 T. davidiana |
+ |
Bracteoles not spatulate; stigmas linear to lanceolate |
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(10) |
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10 (9) |
Leaves abaxially carinate, transverse section triangular; bracteoles linear. |
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6 T. elephantina |
+ |
Leaves abaxially convex, transverse section semicircular; bracteoles filiform to triangular |
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(11) |
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11 (10) |
Anthers ca. 2 mm; stigmas ca. as broad as styles. |
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7 T. angustifolia |
+ |
Anthers ca. 1.4 mm; stigmas broader than styles. |
|
8 T. domingensis |