Acacia.] XXIII. LEGUMINOSAE. 123 



Var. prostrata. Stems prostrate. Leaflets in 2-4 pairs. Flowers small, solitary or in pairs. 

 Standard scarcely shorter than the wings. Stamens exserted. Pod unknown. — T. Kirlc, Forest Fl. 

 N.Z. t. 52. S. prostrata, Bacli. in Trans. N.Z.I, xvi. (1883) 395, t. 36. SOUTH Island: Kaikoura 

 Ranges, Buchanan I Mount Torlesse, &c., N. T. Carrington ! 2,000ft. to 2,500ft. 



* ACACIA, Linn. 



Flowers 4-5- rarely 3-6-merous. Calyx toothed or lobed, or sepals rarely 0. 

 Petals united or rarely free, often adnate to the stamens. Stamens oo, usually free, 

 hypogynous or perigynous. Pod flat or almost cylindrical, straight or curved or 

 twisted, coriaceous, 2-valved or indehiscent, rarely septate, many-seeded. Funicle 

 often dilated into a fleshy aril. Trees, shrubs, rarely climbers or herbaceous. Leaves 

 2-pinnate with almost minute leaflets, often reduced to a flattened phyllodium. 

 Flowers hermaphrodite or polygamous, crowded in globose heads or cylindrical spikes, 

 rarely racemose. 



Glabrou=!, never glaucous. Pod contracted between the seeds . . . , . . * A. deciirrens. 



Glaucous or clothed with silvery hairs. Pod not contracted between the seeds . . "A. dealbata. 



* A. decurrens, Willd., Sp. PL iv. 1072. A shrub or small tree, glabrous, 

 pubescent or almost tomentose. Branchlets angled. Leaves 2-pinnate ; pinnae 

 7-20 pairs; leaflets 30-40 pairs or more, 3-4 lines long, linear; glands on the 

 rhachis few or many. Flower-heads globose, small, arranged in axillary simple or 

 branched racemes, or the upper paniculate ; flowers 20-30 in each head. Calyx 

 6-lobed, ciliate. Petals 5, spreading. Pod 3in.-4in. long or more, Jin. broad, con- 

 tracted between the seeds. 



NORTH Island : various places in Hokianga Harbour ; naturalised. Black wattle. Nov. 

 Australia. 



Now largely cultivated for tanning purposes. 



*A. dealbata, Link., Enum. Hort. Berol. 445. A tree, giving off numerous 

 suckers. Twigs and leaves glaucous, more or less clothed with silvery hairs. Leaves 

 2-pinnate ; pinnae in 10-20 pairs or more ; pinnules in 30-40 pairs or more, linear, 

 obtuse, with a rounded gland at the base of each pair of pinnae. Heads globose, 

 20-30-flo\vered, shortly pedicelled and arranged in axillary or terminal racemes or 

 panicles. Calyx 6-lobed, ciliate. Petals 5, free ; tips spreading. Stamens free. 

 Pods 3in.-4in. long, not constricted between the seeds. 



NORTH Island : chiefly in the Auckland District. Silver-toattle. July, Aug. Australia. 



'ALBIZZIA, Durazz. 

 Calyx 5- or rarely 4-toothed. Corolla tubular, 5- or rarely 4-lobed. Stamens 

 very long, cx^, monadelphous, forming a tube sheathing the ovary. Pod oblong, 

 straight, thin, flat, 2-valved, rarely indehiscent. Seeds orbicular. Leaves 2-pinnate. 

 Flowers hermaphrodite, in globular heads or cyhndrical spikes. Shrubs or trees. 



* A. lophantha, Benth. in Hook. Land. Journ. Bot. iii. 86. A shrub or. small 

 tree, with rather distant spreading branches, branchlets deeply grooved, and with 

 the young leaves softly pubescent. Petiole turgid at the base. Leaves 2-pinnate ; 

 pinnae in about 10 pairs ; leaflets 20-40 pairs, finely pubescent above, glabrous 

 beneath, linear, about 3 lines long, unequally subacute, the nerve just within the 

 upper maroin ; an oblong gland lies at the base of the lowest pair of pinnae. Flowers 

 in lax axillary racemes, 3in.-4in. long; petals very short. Calyx shortly campanu- 

 late 5-toothed, silky. Corolla tubular, 5-lobed, silky. Stamens united by their 

 filaments. Ovary shortly stipitate, often coloured. Pods pendulous, 2-valved, flat, 

 several-seeded. Seeds oblong. 



NORTH Island ; naturalised in many places from Auckland to Wellington. Brusli-watlh. 

 Aug., Sept. West Australia. 



