Ticanto rhombifolia (J. E. Vidal) R. Clark & Gagnon, 2022
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publication ID |
https://dx.doi.org/10.3897/phytokeys.205.82300 |
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persistent identifier |
https://treatment.plazi.org/id/3237DD33-E57A-59CB-A598-4FAC9FA03943 |
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treatment provided by |
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scientific name |
Ticanto rhombifolia (J. E. Vidal) R. Clark & Gagnon |
| status |
comb. nov. |
5. Ticanto rhombifolia (J. E. Vidal) R. Clark & Gagnon comb. nov.
Basionym.
Caesalpinia rhombifolia J. E. Vidal, Adansonia, n.s., 15: 394. 1976.
Type.
Vietnam. Quang Ninh, Dam Ha, W.T. Tsang 29830 (holotype: P [P 02142684!]; isotypes: C [C 10011919!], E [E00313521!], G, K [K000789332!], L [L0018793!], SING) .
Description.
Habit a liana. Stems with sparse recurved prickles, glabrous. Stipules caducous, not seen. Leaves with 3-6 pairs opposite pinnae; petiole 2.5-3 cm; leaf rachis ca. 10-15 cm, with paired recurved prickles at base of pinnae and scattered in between, glabrous; pinna rachis 3.5-6 cm, glabrous; petiolules ca. 1 mm; leaflets 3-5 opposite pairs per pinna; chartaceous, slightly rhombic, base broadly cuneate, apex acute, rarely slightly emarginate, 1.5-2 × 0.8-1.3 cm, both surfaces glabrous; venation reticulate, anastomosing. Inflorescence a panicle, axillary or terminal, 10-20 cm; axes glabrous; pedicels 6-9 mm, articulated, glabrous or subglabrous. Flowers with a hypanthium that is sparsely ferruginous tomentose or glabrous; calyx lobes with ciliate margins; petals ca. 7 mm long, median petal smaller than the others, rounded at apex, with a patch of hairs at base of blade, other petals hairy on inner surface of claw; stamen filaments ca. 7 mm long, pale orange tomentose on basal ca. ½ on inner surface; anthers ca. 1.5 mm long; ovary glabrous, 1- or 2-ovuled; style ca. 10 mm, glabrous. Fruit indehiscent, coriaceous, asymmetrical, sub-lunate, inflated when mature, stipe ca. 3 mm, apex slightly beaked, venation prominent, glabrous, ca. 3-4 × 2.3-2.5 cm, lacking a wing. Seed 1, broadly ellipsoid, ca. 1.8-2 × 1-1.5 × 1.1 cm, matt black.
Ecology.
Thickets.
Phenology.
Flowering May-July, fruiting October-November.
Distribution.
China (Guangxi), Vietnam (Map 1 View Map 1 ).
Selected specimens examined.
China. Guangxi: Dongxing, Jiangping, Hezhou, Dongxing Exped. 450681180510051LY (IBK). Fangcheng, Dawangjiang Village, Y.S. Huang & L. Wu H110397 (IBK).
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