Carmichaelia R.Br.

New zealand broom (en)

Genus

Angiosperms > Fabales > Fabaceae

Characteristics

Shrubs or small trees; habit various, often broom-like. Leaves imparipinnate, often absent in adult plant, with stems flattened and photosynthetic; stipules absent; stipels small, membranous. Inflorescences terminal and axillary racemose, simple or branched, or clustered, or sometimes flowers solitary; bracts and bracteoles small, membranous. Calyx campanulate; teeth 5, ± equal. Standard petal ± orbicular, shortly clawed; wings ± falcate; keel incurved. Stamens 9 + 1; uppermost free; other 9 united into a tube; anthers uniform. Ovary shortly stipitate, with slender style, persistent in fruit; stigma capitate, minute. Pods ovate to elliptic-oblong, sometimes somewhat obliquely so, usually dehiscent; valves completely or partially separating from margins. Seeds 1–12, ± kidney-shaped.
More
Fls in simple or branched racemes to solitary; calyx ± campanulate, 5-toothed; standard ± orbicular, clawed; keel incurved, clawed, auricled; wings ± falcate, auricled. Stamens diadelphous. Ovary with slender style (persisting as a "beak") and minute capitate stigma; ovules us. few. Fr. ("pod") dry; margins thickened, persistent ("replum"). Valves 2, hardened in fr. Both valves or one completely or partly separating from replum in dehiscence (pod ind., except rarely, in subgenera Monroella and Huttonella). Seeds 1-12 per pod, ± reniform. Shrubs or small trees, of diverse habits. Besides the N.Z. spp. there is C. exsul of Lord Howe Id, of the subgenus Carmichaelia.
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Nitrogen fixer rhizobia
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