Causonis japonica

(Thunberg) Rafinesque

Sylva Tellur., 87. 1838. (as Causonia)

Common names: Bushkiller
Basionym: Vitis japonica Thunberg in J. A. Murray, Syst. Veg. ed.,Fl. Jap. 14, 244. 1784,104. 1784
Synonyms: Cayratia japonica (Thunberg) Gagnepain Cissus japonica (Thunberg) Willdenow Columella japonica (Thunberg) Merrill
Treatment appears in FNA Volume 12. Treatment on page 23.

Branchlets usually purplish. Leaves: petiole slightly shorter to ± equaling blade; blade triangular-ovate in outline; leaflets (3–)5, lateral short-petiolulate, terminal long-petiolulate, leaflets narrowly ovate to oblong, 1–14.5 × 0.5–4.5 cm, terminal larger than lateral, base cuneate to rounded, margins crenate to crenate-serrate, apex usually acute or short-acuminate, sometimes obtuse to rounded, surfaces glabrous or abaxial puberulent. Flowers green to yellowish green. Berries globose, 8–12 mm diam. 2n = 40, 60.

Phenology: Flowering late May–Jun; fruiting Aug–Sep.
Habitat: Forest edges and openings, pastures, waste areas.
Elevation: 0–300 m.


V12 466-distribution-map.jpg

Introduced; Ala., La., Miss., N.C., Tex., e, se Asia, Australia.


Causonis japonica was first reported naturalized in Louisiana in the 1960s (L. H. Shinners 1964). It has since escaped from cultivation elsewhere and become naturalized in scattered places in the southeastern United States.

Selected References


Lower Taxa

... more about "Causonis japonica"
Michael O. Moore† +  and Jun Wen +
(Thunberg) Rafinesque +
Vitis japonica +
Bushkiller +
Ala. +, La. +, Miss. +, N.C. +, Tex. +, e +, se Asia +  and Australia. +
0–300 m. +
Forest edges and openings, pastures, waste areas. +
Flowering late May–Jun +  and fruiting Aug–Sep. +
Sylva Tellur., +
Introduced +  and Illustrated +
Cayratia japonica +, Cissus japonica +  and Columella japonica +
Causonis japonica +
Causonis +
species +