WorldFloraDB - Haematoxylum

Characteristics

Trees or shrubs, unarmed or armed with stout spines. Leaves paripinnate or sometimes the lower pinnae again divided and bipinnate, with a few pairs of usually obcordate or obovate leaflets; stipules small and relatively inconspicuous or spinescent. Inflorescence an axillary or terminal raceme. Flowers bisexual, pedicellate; bracts minute or inconspicuous; bracteoles absent. Calyx eglandular or sometimes covered with numerous, small, stalked glands; receptacle very short, oblique; sepals 5, imbricate; lower sepal much larger, hooded apically and clasping the others. Petals 5, imbricate, obovate or oblong, slightly unequal. Stamens 10, free; filaments densely villous basally, glabrous above; anthers dorsifixed. Ovary shortly stipitate, sometimes glandular; ovules 2 or 3; style filiform; stigma small, terminal. Pod elliptic-oblong or lanceolate, flattened, membranous, splitting longitudinally ±along the middle of each valve. Seeds transversely oblong.

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Tree or shrub, sometimes with spiny branchlets. Stipules caducous. Leaves spiral, paripinnate or partially bipinnate. Leaflets few pairs per leaf. Inflorescences crowded on short shoots, axillary, terminal, racemose. Flowers small, bisexual; bracts minute, absent at anthesis; bracteoles none. Hypanthium short. Calyx covering the rest of the flower in bud, slightly unequal, 5-lobed, lobes imbricate, soon deciduous. Petals 5, imbricate, subequal. Stamens 10, fertile, free; filaments pilose at base; anthers introrse. Ovary shortly stipitate, free, 2-or 3-ovuled; style filiform; stigma small, terminal. Pods lanceolate or elliptic-oblong, compressed, two-valved, valves thin. Seeds transversely oblong, exalbuminous.

Trees or shrubs. Leaves abruptly pinnate or bipinnate by lower pinnae again divided; stipules spinescent, deciduous; stipels absent. Flowers yellow, small, in axillary, short, sparse racemes. Receptacle short. Calyx 5-lobed; lobes unequal. Stamens 10, free; filaments hairy at bases; anthers uniform, opening by lateral slits. Ovary shortly stalked, 2-or 3-ovuled; style filiform; stigma terminal, capitate. Legume compressed, oblong or lanceolate, membranous, splitting along middle of valves. Seeds transversely oblong, without endosperm; radicles straight.

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Foliage retention	deciduous
Sexuality	hermaphrodite
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Cultivation

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