Tournonia Moq.

Eriksson, R. (2007). A Synopsis of Basellaceae. Kew Bulletin, 62(2), 297-320. Retrieved from http://www.jstor.org/stable/20443356

Type

Tournonia hookeriana Moq.

Morphology General Habit

Scandent or occasionally trailing vine

Morphology Stem

Stem glabrous, not prodtucing tutbers

Morphology Leaves

Leaves petiolate, ± decurrent on stem; leaf blade 1 - 5.5 x 1 - 5.5 cm, ± rounded cordate, with margins dentate by ± acute and thinly arranged glands, cordate at base, obtuse to acute at apex

Morphology Reproductive morphology Inflorescences

Inflorescences 1 - 4 cm long and wide dichasia with slender axis, shortly to distinctly pedunculate

Morphology Reproductive morphology Flowers Pedicel

Pedicels ± slender, slightly thickened and elongated in fruit

Morphology Reproductive morphology Inflorescences Bracteoles

Bracteoles initially subtending flower bud, later displaced due to elongation of pedicel and development of successive inflorescence branches in their axils, distinctly developed, usually rather thick, narrowly triangular or lanceolate to ovate, free

Morphology Reproductive morphology Flowers

Flowers distinctly pedicellate, bisexual, chasmogamous, scentless

Morphology Reproductive morphology Flowers Calyx

Sepals 1.5 - 2 x 1 - 1.5 mm, distinctly shorter than petals, patent at anthesis and ± erect in fruit, rounded to broadly ovate, free from each other, fused at base up to c. 1/2, with petals, without dorsal structures, obtuse at apex, at anthesis greenish, in fruit pale and dry, ± membranous

Morphology Reproductive morphology Flowers Corolla

Petals 2 - 3 x 1.5 mm, uniform, patent at anthesis and ± erect in fruit, ± elliptic, connate only at utmost base, obtuse at apex, at anthesis greenish, in fruit pale and dry, ± membranous

Morphology Reproductive morphology Flowers Androecium Stamens Filaments

Filaments straight in bud, connate and fused up to c. 1/2 of their length with petals; anthers basifixed, ± deltoid, with thecae connate at apex, dehiscent by longitudinal slits

Morphology Reproductive morphology Flowers Gynoecium Ovary

Ovary ± globose, sometimes slightly lobed; styles 3, sometimes persistent; stigmas linear to clavate

Morphology Reproductive morphology Fruits

Fruit subglobose to somewhat obliquely pyriform, in cross section ± rounded to obscurely ridged, tightly enclosed by persistent, sometimes eventually disappearing perianth.

Note

A monotypic genus that may be closely related to Ullucus.