Cestrum L.

Flora Zambesiaca. Vol. 8, Part 4. Solanaceae. Gonçalves AE. 2005

Morphology Reproductive morphology Flowers Androecium Stamens

Stamens equal or subequal, attached from the middle or higher within the corolla tube and running downwards as ridges, very rarely totally free, mostly included; free part of filaments filiform, often thickened, geniculate or appendaged at or near the base, variously pubescent to glabrous; anthers short, ± globose or obcordate in outline, medifixed, the thecae ± parallel, dehiscing by longitudinal slits Stamens equal or subequal, attached from the middle or higher within the corolla tube and running downwards as ridges, very rarely totally free, mostly included; free part of filaments filiform, often thickened, geniculate or appendaged at or near the base, variously pubescent to glabrous; anthers short, ± globose or obcordate in outline, medifixed, the thecae ± parallel, dehiscing by longitudinal slits.

Morphology Reproductive morphology Flowers Disc

Disk glandular, rather thick or membranous and cupular, occasionally inconspicuous Disk glandular, rather thick or membranous and cupular, occasionally inconspicuous.

Morphology Reproductive morphology Flowers Gynoecium Ovary

Ovary on a short, stout stipe or subsessile, ovoid or globose, 2(rarely only incompletely)-locular, the middle dissepiment with subglobose placentas, the ovules few–many in each locule, hemitropous.

Morphology Reproductive morphology Flowers Gynoecium Style

Style filiform, usually with minute glands upwards.

Morphology Reproductive morphology Flowers Gynoecium Stigma

Stigma small, ± capitate, subpeltate, concave or 2-lobed, rarely clavate, included or exserted

Morphology Reproductive morphology Fruits

Fruit blackish to violaceous, sometimes reddish, rarely white, shortly stipitate, baccaceous, ± globose or ovoid to obovoid, fleshy or juicy, (1)2(4)-locular, indehiscent, rarely with 1–2 apical sutures Fruit blackish to violaceous, sometimes reddish, rarely white, shortly stipitate, baccaceous, ± globose or ovoid to obovoid, fleshy or juicy, (1)2(4)-locular, indehiscent, rarely with 1–2 apical sutures.

Morphology Reproductive morphology Seeds

Seeds few or solitary by abortion, variable in shape and size, compressed, dorsally convex, the internal face angular; testa often nearly smooth; embryo orbicular, ovate or oblong in outline, usually thick, straight or somewhat curved in the axis of the fleshy endosperm, with the terete radicle inferior, much narrower (or scarcely so) than the small, compressed, foliaceous, often semi-terete cotyledons Seeds few or solitary by abortion, variable in shape and size, compressed, dorsally convex, the internal face angular; testa often nearly smooth; embryo orbicular, ovate or oblong in outline, usually thick, straight or somewhat curved in the axis of the fleshy endosperm, with the terete radicle inferior, much narrower (or scarcely so) than the small, compressed, foliaceous, often semi-terete cotyledons.

Morphology General Habit

Erect or drooping shrubs or small trees, sometimes scandent, glabrous to tomentose with simple or branched hairs. Erect or drooping shrubs or small trees, sometimes scandent, glabrous to tomentose with simple or branched hairs

Morphology Leaves

Leaves solitary, alternate, rarely in pairs, mostly shortly petiolate, ± entire, often gradually passing into bracts; pseudostipules often present in the axils. Leaves solitary, alternate, rarely in pairs, mostly shortly petiolate, ± entire, often gradually passing into bracts; pseudostipules often present in the axils

Morphology Reproductive morphology Inflorescences

Cymes axillary or sometimes appearing terminal, extended, racemiform to more often shortened, corymbiform, spiciform or fasciculiform, sometimes combined into terminal, paniculiform inflorescences; bracts and bracteoles often present. Cymes axillary or sometimes appearing terminal, extended, racemiform to more often shortened, corymbiform, spiciform or fasciculiform, sometimes combined into terminal, paniculiform inflorescences; bracts and bracteoles often present

Morphology Reproductive morphology Flowers

Flowers (4)5(6)-merous, actinomorphic, occasionally slightly zygomorphic, usually shortly pedicellate, sometimes opening at night. Flowers (4)5(6)-merous, actinomorphic, occasionally slightly zygomorphic, usually shortly pedicellate, sometimes opening at night

Morphology Reproductive morphology Flowers Calyx

Calyx shorter than the corolla tube, tubular to campanulate or cupular, 5-dentate to deeply divided, the lobes subequal or occasionally unequal, usually shorter than the tube, with valvate aestivation, persistent in fruit, not very accrescent. Calyx shorter than the corolla tube, tubular to campanulate or cupular, 5-dentate to deeply divided, the lobes subequal or occasionally unequal, usually shorter than the tube, with valvate aestivation, persistent in fruit, not very accrescent

Morphology Reproductive morphology Flowers Corolla

Corolla deep yellow to reddish or purplish, rarely greenish-white or white, often very fragrant, sometimes only so at night, tubular-infundibuliform, salviform or somewhat trumpet-shaped, the tube sometimes obconical or with a bulge, often constricted to bladdery at the throat; limb short, regularly revolute, 5-lobed to deeply divided, subplicate, the lobes short, often with involute, tomentose or pubescent margins, spreading or reflexed, with valvate or induplicate-valvate aestivation. Corolla deep yellow to reddish or purplish, rarely greenish-white or white, often very fragrant, sometimes only so at night, tubular-infundibuliform, salviform or somewhat trumpet-shaped, the tube sometimes obconical or with a bulge, often constricted to bladdery at the throat; limb short, regularly revolute, 5-lobed to deeply divided, subplicate, the lobes short, often with involute, tomentose or pubescent margins, spreading or reflexed, with valvate or induplicate-valvate aestivation

Morphology Reproductive morphology Flowers Gynoecium Pistil

Ovary on a short, stout stipe or subsessile, ovoid or globose, 2(rarely only incompletely)-locular, the middle dissepiment with subglobose placentas, the ovules few–many in each locule, hemitropous; style filiform, usually with minute glands upwards; stigma small, ± capitate, subpeltate, concave or 2-lobed, rarely clavate, included or exserted.