Acacia Miller

4. Acacia Miller View in CoL 2

Trees or shrubs. Leaves 2-pinnate and dorsiventral in the juvenile state and remaining so in the adult state or soon reduced to simple phyllodes; stipules rudimentary or becoming large spines. Flowers small, yellow to white, in cylindrical spikes or in globose capitula arranged in racemes or panicles; calyx and corolla 4- to 5-merous; stamens numerous, free, long and conspicuous. Legume usually dehiscent. Seeds with a filiform funicle ending in a cupuliform strophiole. 1 Leaves all 2-pinnate 2 Leaves deciduous, with 2-8 pairs of pinnae; stipules spinescent 3 Leaflets 3-5 mm; stipular spines 25 mm on older branches;

legume cylindrical-fusiform, inflated 1. farnesiana 3 Leaflets 6-10 mm; stipular spines up to 100 mm on older branches; legume linear-falcate, flattened 2. karoo 2 Leaves evergreen, with 8-20 pairs of pinnae; stipules rudimentary 4 Twigs and young leaves whitish-tomentose; leaflets 3-4 mm;

legume 10—12 mm wide, not or scarcely constricted between the seeds 3. dealbata 4 Twigs and young leaves yellowish-villous; leaflets 2 mm;

legume 5-7 mm wide, distinctly constricted between the seeds 4. mearnsii 1 Adult leaves reduced to flattened phyllodes, occasionally mixed with some 2-pinnate leaves 5 Flowers in axillary spikes; legume terete 5. longifolia 5 Flowers in capitula usually arranged in racemes; legume compressed 6 Phyllodes with 2-6 longitudinal veins; legume twisted or annular 7 Procumbent shrub; phyllodes 3-8 cm; flowers bright yellow 6. cyclops 7 Tree; phyllodes 6-13 cm; flowers creamy-white 7. melanoxylon 6Phyllodes with a single longitudinal vein; legume almost straight 8 Phyllodes strongly falcate, oblong-lanceolate to obovate;

10-20 capitula in each raceme 8. pycnantha 8 Phyllodes not or scarcely falcate, linear to lanceolate or oblanceolate; 2-10 capitula in each raceme

9 Capitula 10-15 mm in diameter; legume distinctly constricted between seeds; funicle short, whitish 9. cyanophylla

9 Capitula 4-6 mm in diameter; legume not or scarcely constricted between seeds; funicle encircling the seed, scarlet 10. retinodes