taxonID	type	description	language	source
65DE1A624FC75AF2828263ECDE9D077D.taxon	diagnosis	Diagnosis. Morphologically, Causonis sessilifolia and Causonis japonica (Thunb. ex Murray) Raf. share similarity in possessing 5 - foliolate leaves, but the former taxon has sessile leaves and 2 - 5 - furcate tendrils (vs. petiolate leaves and 2 - 3 - furcate tendrils in C. japonica).	en	Trias-Blasi, Anna, Poopath, Manop, Lu, Li-Min, Parmar, Gaurav (2021): Causonis sessilifolia (Vitaceae), a new species from Thailand. PhytoKeys 185: 55-64, DOI: http://dx.doi.org/10.3897/phytokeys.185.75570, URL: http://dx.doi.org/10.3897/phytokeys.185.75570
65DE1A624FC75AF2828263ECDE9D077D.taxon	description	Description. Slender herbaceous climber. Stem cylindrical, 2 - 5 mm diameter, branched, glabrous, young stems purplish-green, hairy with some bent hairs to glabrous; tendril 2 - 5 - furcate, slender, wiry, leaf-opposed, cylindrical, with a straight section, then bifurcating and coiling, 5 - 10 cm long, glabrous. Leaves compound, pedately 5 - foliolate, alternate or opposite; petiole absent, central petiolule 0.5 - 1.5 (- 3) cm long, middle petiolules sessile, lateral petiolules 0.5 - 2 mm long, mostly glabrous, sometimes with bent hairs; central leaflet blade lanceolate to slightly rhombic, 2 - 5 by 1 - 2.5 cm, base cuneate; middle leaflet blade lanceolate, 1 - 3 by 0.5 - 1.5 cm; lateral leaflet blade lanceolate often with a single asymmetric acute lobe, 0.5 - 1.75 by 0.2 - 1.25 cm, base cuneate; margin broadly denticulate, apex acuminate to mucronate; adaxial and abaxial sides glabrous, mid-rib raised on upper surface, each leaflet with 2 - 5 pairs of lateral veins, if leaflet lobed then lower lateral vein may be more distinct. Inflorescence ramified, interfoliar or pseudo-terminal, mostly dividing dichotomously, with numerous ramifications, 0.7 - 2 by 1 - 2.5 cm, lax, erect; peduncle 2 - 8 cm long, glabrous, pedicel 0.75 - 2 mm long, glabrous. Buds ovoid, 1 - 2 by 1 - 2 mm. Calyx cupuliform, entire, margin sinuate, 0.5 - 1 by 1 - 1.25 mm, glabrous, dark red. Corolla petals 4, ovate, 1.5 - 2 by 1.25 - 2 mm, apex cucullate, glabrous, dark red. Stamens 4; filaments flattened, broadening at the base, 1 mm long, cream; anthers elliptic, medifixed, 0.5 - 1 mm long, cream. Ovary adnate to the disc; disc with 4 distinct lobes, cupular, 0.5 by 1.5 mm, glabrous, dark red outside and whitish inside. Style conical, 0.5 mm long; stigma inconspicuous, dark red. Fruit berry, globose, 4 - 7 mm in diameter, glabrous, smooth, green. Seeds 2, 4 - 5 by 3 mm, adaxial side with two faces, abaxial side convex and ovate with a linear chalazal knot (Fig. 2).	en	Trias-Blasi, Anna, Poopath, Manop, Lu, Li-Min, Parmar, Gaurav (2021): Causonis sessilifolia (Vitaceae), a new species from Thailand. PhytoKeys 185: 55-64, DOI: http://dx.doi.org/10.3897/phytokeys.185.75570, URL: http://dx.doi.org/10.3897/phytokeys.185.75570
65DE1A624FC75AF2828263ECDE9D077D.taxon	etymology	Etymology. The specific epithet " sessilifolia " refers to the sessile leaves of the taxon.	en	Trias-Blasi, Anna, Poopath, Manop, Lu, Li-Min, Parmar, Gaurav (2021): Causonis sessilifolia (Vitaceae), a new species from Thailand. PhytoKeys 185: 55-64, DOI: http://dx.doi.org/10.3897/phytokeys.185.75570, URL: http://dx.doi.org/10.3897/phytokeys.185.75570
65DE1A624FC75AF2828263ECDE9D077D.taxon	distribution	Distribution and habitat. Thailand (Northern floristic region, Nakhon Sawan). Lowland floodplain forest, along the bank of canal in open areas; 30 m alt. (Figs 1, 3).	en	Trias-Blasi, Anna, Poopath, Manop, Lu, Li-Min, Parmar, Gaurav (2021): Causonis sessilifolia (Vitaceae), a new species from Thailand. PhytoKeys 185: 55-64, DOI: http://dx.doi.org/10.3897/phytokeys.185.75570, URL: http://dx.doi.org/10.3897/phytokeys.185.75570
