Ticanto yunnanensis (S. J. Li, D. X. Zhang & Z.Y. Chen) 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/901D8FF3-AB92-5CA5-92C2-353394F41EF9 |
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treatment provided by |
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scientific name |
Ticanto yunnanensis (S. J. Li, D. X. Zhang & Z.Y. Chen) R. Clark & Gagnon |
| status |
comb. nov. |
9. Ticanto yunnanensis (S. J. Li, D. X. Zhang & Z.Y. Chen) R. Clark & Gagnon comb. nov.
Basionym.
Caesalpinia yunnanensis S. J. Li, D. X. Zhang & Z.Y. Chen. Novon 16(1): 78-80. 2006.
Type.
China. Yunnan, Xishuangbanna, T. P. Zhu (Zhu Tai-Ping) 139 (holotype KUN: [1206956!], isotype IBSC [0162107!]) .
Description.
Habit a liana. Stems with recurved prickles to ca. 2 mm long, glabrous. Stipules caducous, not seen. Leaves with 3 pairs opposite pinnae, petiole 7-8 cm, rachis 15-20 cm long, rachis with recurved prickles at the base of each pinna and scattered in between the pinnae insertions, pinnae 5-6.5 cm long; leaflets 2-3 opposite pairs per pinna, blade coriaceous, elliptic or narrowly elliptic, base obtuse to cuneate, apex bluntly acuminate, margin incurved abaxially, 6-11.5 × 2.5-4.5 cm, upper surface glossy, lower surface dull, both surfaces glabrous, 2o venation anastomosing, 3o venation finely reticulate. Inflorescence an axillary raceme, more than 20 cm long; pedicels ca. 7 mm. Flowers unknown; receptacle remnant ca. 3 mm wide. Fruit dehiscent, ligneous, oblong to elliptic, slightly asymmetrical, base widely cuneate, apex with beak ca. 2 mm long, venation reticulate, not prominent; 5-7 × 2.8-3.5 cm, ventral suture lacking a wing. Seed 1.
Ecology.
Thickets along riversides, sparse woodlands along roadsides, elevation ca. 600 m.
Phenology.
Flowering unknown, fruiting October.
Distribution.
China (Yunnan) (Map 1 View Map 1 ).
Notes.
Specimen Chen 0066 which is listed as a paratype of T. yunnanensis has leaflets that are asymmetrical, with an asymmetrical base and distinctly acuminate tip, and the secondary veins are at a more acute angle to the midvein when compared with typical T. yunnanensis . It is sufficiently morphologically divergent from the concept of T. yunnanensis to be considered by the current authors to represent a different taxon (not determined), and the characters of that specimen are therefore not included in the description above.
Selected specimens examined.
China. Yunnan: Xishuangbanna, Mengla, Yiwu, J.H. Zhang 19335 (HITBC).
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