synonymBiloba(Solanaceous plants) generally refers to Petunia
Petunia JussSolanaceaeNext Genus, AliasBiloba。herbaceous, often with glandular hair.Flowers solitary, calyx 5-parted or almost completely parted, corolla funnel-shaped or saucer shaped, stamens 5.capsule2 valve split.
About 25 species are distributed in South America. One kind of Bidong eggplant is introduced and cultivated in China. It is often cultivated in urban parks in the north and south.
Vegetation, oftenGlandular hair, branching.Leaves entire, alternate.The flowers are solitary.calyx5 deep or almost complete, lobes oblong or linear;CorollaFunnel-shaped or saucer shaped, cylindrical or gradually expanded upward, with folds on the eaves, symmetrical or oblique, slightly 2-lipped, short and wide lobes, imbricated arrangement;Stamens 5, inserted in the middle or lower part of the corolla tube, do not protrude from the corolla, of which 4 are strong, the fifth is short, sparsely sterile or degenerated, the filaments are filiform, and the anthers are split longitudinally;Disk glandular, entire or notched 2-lobed;Ovary 2-locular, stigma inconspicuously 2-lobed, ovules numerous.capsule2 valve split.Seeds subglobose or ovoid, with reticulate pits on the surface;Embryos slightly arched or nearly straight.[3]
Key values
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It is widely cultivated in gardens around the world.It is widely cultivated and appreciated in urban parks in north and south China.
Distribution
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About 25 species, mainly distributed in South America.One species is commonly cultivated in China.[3]
Growth habit
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It is an easy sandy loam with good drainage and fertility. It is not resistant to cold and likes to face the sun. It can avoid rain and waterlogging.
Annual herb, 30-60 cm high, all glandular hairs.The leaves are short stalked or nearly sessile, ovate, acute at the top, wide cuneate or cuneate at the base, entire, 3-8 cm long and 1.5-4.5 cm wide, with inconspicuous lateral veins, 5-7 on each side.
Flowers solitary in leaf axils, pedicels 3-5 cm long.Calyx 5-parted, lobes linear, 1-1.5 cm long, 3.5 mm wide, blunt at the top, persistent in fruit;Corolla white or purple, with various stripes, funnel shaped, 5-7cm long, tube gradually expanded upward, eaves spread, folded, 5-lobed;Stamens 4 long and 1 short;Style slightly exceeds stamens.The capsule is conical, about 1cm long, 2-valved, and 2-lobed at the top of each valve.The seed is very small, nearly spherical, about 0.5 mm in diameter, brown.[2]
