Pyracantha M.Roem.

Firethorn (en), Buisson ardent (fr), Pyracantha (fr)

Genus

Angiosperms > Rosales > Rosaceae

Characteristics

Evergreen shrubs, usually armed with spines; stems usually rigid and spreading, sometimes sprawling, sometimes tomentose when young. Lvs alternate and spaced on young vegetative shoots, otherwise in fascicles along older stems, simple, usually serrate or crenulate, sometimes entire, ± coriaceous; stipules minute, deciduous. Infl. a compound, often ± flattened corymb. Fls 5-merous, ☿, pedicellate, moderately small. Hypanthium tubular, closed at apex. Epicalyx 0. Sepals short, connate at base. Petals suborbicular, spreading, white. Stamens 20. Ovary ± inferior; carpels 5, free on ventral side; styles 5; ovules 2 in each locule. Fr. small and pome-like, red, yellow or orange, with mealy flesh and persistent calyx; carpel walls woody; seeds 5.
More
Shrubs or small trees, evergreen, usually with thorny branches; buds small, pubescent. Leaves simple, alternate or fascicled, shortly petiolate or sessile, venation camptodromous, margin crenulate, serrulate, or entire; stipules caducous, minute. Inflorescences compound corymbs; hypanthium short. Sepals 5. Petals 5, spreading, white, usually suborbicular, base shortly clawed. Stamens 15–20; anthers yellow. Carpels 5; basally ca. 1/2 adnate to hypanthium, apically free; ovary 5-loculed, semi-inferior, with 2 ovules per locule; styles 5, free. Pome red or orange, globose, with persistent incurved sepals at apex; pyrenes (nutlets) 5.
Evergreen shrubs. Twigs often thorny. Carpels 5, free from each other but connate with the hypanthium, ovaries semi-inferior, styles free, ovules 2. Fruits crowned by persistent sepals, containing 5 pyrenes.
Life form annual
Growth form shrub
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
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Environment

Light -
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Hardiness (USDA) 4-10

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
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Cultivation

Mode -
Germination duration (days) 40 - 180
Germination temperacture (C°) 10
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Germination treatment stratification
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