| 1 |
Plants flowering
|
(2)
|
| 1 + |
Plants fruiting
|
(8)
|
| 2 (1) |
Flowers 4(or 5)-merous
|
(3)
|
| 2 (1) + |
Flowers (4 or)5-merous
|
(4)
|
| 3 (2) |
Leaflet blade secondary veins 13-22 on each side of midvein, margin crenulate or rarely entire; ovules 2 per carpel, subcollateral.
(1)
|
T. fraxinifolium
|
| 3 (2) + |
Leaflet blade secondary veins 11-14 on each side of midvein, margin entire; ovules 2 per carpel, collateral.
(5)
|
T. trichotomum
|
| 4 (2) |
Ovules 1 per carpel; leaflet blades abaxially finely papillate.
(7)
|
T. austrosinense
|
| 4 (2) + |
Ovules 2 per carpel; leaflet blades not abaxially papillate
|
(5)
|
| 5 (4) |
Ovules superposed
|
(6)
|
| 5 (4) + |
Ovules collateral or subcollateral
|
(7)
|
| 6 (5) |
Petals white or whitish, drying whitish or pale brown, outside glabrous; leaflet blade margins subentire to crenulate.
(2)
|
T. daniellii
|
| 6 (5) + |
Petals purple, drying dull purplish red, outside sparsely to ± densely appressed pubescent; leaflet blade margins entire.
(3)
|
T. calcicola
|
| 7 (5) |
Sepals ca. 0.5 mm; leaflet blades abaxially usually glaucous, reticulate veinlets dense and clearly defined.
(4)
|
T. glabrifolium
|
| 7 (5) + |
Sepals 0.5-1.2 mm; leaflet blades abaxially rarely slightly glaucous, reticulate veinlets ± loose and ± inconspicuous.
(6)
|
T. ruticarpum
|
| 8 (1) |
Fruit (including abortive carpels, if any) 4(or 5)-carpelled
|
(9)
|
| 8 (1) + |
Fruit (including abortive carpels, if any) (4 or)5-carpelled
|
(10)
|
| 9 (8) |
Seeds 2 per follicle, subtrigonous, attached in dehisced follicle to a fleshy funiculate aril.
(1)
|
T. fraxinifolium
|
| 9 (8) + |
Seeds 1 per follicle, paired with an abortive seed, subglobose to broadly ovoid, attached in dehisced follicle to an axile strip of pergamentaceous pericarp tissue.
(5)
|
T. trichotomum
|
| 10 (8) |
Fruit follicles 2-seeded
|
(11)
|
| 10 (8) + |
Fruit follicles 1-seeded
|
(12)
|
| 11 (10) |
Fruit follicles 5-11 mm, sparsely to densely spreading pubescent, apex beaked.
(2)
|
T. daniellii
|
| 11 (10) + |
Fruit follicles ca. 5 mm, sparsely to densely appressed pubescent laterally, otherwise glabrate, apex not beaked.
(3)
|
T. calcicola
|
| 12 (10) |
Seed not paired with an abortive seed; follicles ca. 3.5 mm.
(7)
|
T. austrosinense
|
| 12 (10) + |
Seed paired with an abortive seed; follicles 3.5-6 mm
|
(13)
|
| 13 (12) |
Fruit follicles trigonous, sparsely to densely appressed pubescent laterally, glabrous abaxially, endocarp sparsely to ± densely pubescent.
(4)
|
T. glabrifolium
|
| 13 (12) + |
Fruit follicles subglobose, glabrous or sometimes with sparse trichomes laterally and/or abaxially, endocarp glabrous.
(6)
|
T. ruticarpum
|
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