PATAGONIAN EXPEDITIONS I BOTANY. 



Style smooth, rarely pencilled around the stigma (Aslragalincz.) 

 Anther-cells distinct. Pod (not prickly, often stiped) 2-celled, or 

 if I -celled, then globular or ovoid, rarely flat. Carina obtuse. 

 (Flowers rarely yellow, often violet to pink.) Leaves mostly odd- 

 pinnate. 17. Astragalus, p. 502. 

 /2. Seeds few ; pod short. Diadelphous, vexillary stamen free. 



g. (Section of Astragalus f) Calyx turbinate, sessile. Leaves even pin- 

 nate, ending in a spine; stipules adnate. Pod I -celled, usually 

 I -seeded. White-haired, thorny shrub. 



1 8. TragacantJia, p. 508. 

 g2. Anther-cells fusing towards their apex. Pod rather thick, prickly. 



Leaves odd-pinnate, glandular hairy. 19. Glycyrrhiza, p. 509. 

 g$. (Phascolecs.) Leaves pinnately 3-foliolate, without stipels or tendrils. 

 Carina apically incurved, falcate. Pod 2-seeded, flat, curved. Style 

 not bearded ; calyx not enlarging in the fruit. Yellowish flowers 

 mostly in axillary racemes. Leaves resinous-dotted underneath. 



23. Rhynchosia,^. 531. 



e2. Rachis of leaves with a terminal bristle or a tendril. Vexillary stamen free 

 or partly united in a staminal tube. Pod more or less compressed. Herbs 

 with axillary flowers or racemes. (ViciE^E.) 

 f. Staminal tube obliquely truncate. Style slender, apically tufted. Pod 



with several, or only 2 seeds. 21. Vicia, p. 521. 



fz. Staminal tube evenly truncate. Style broadening upwards, bearded along 



the inner side. Seeds several. 22. Lathyrus,^. 526. 



^3. Filaments free, the uppermost pair basally broad, and often adnate to the carina. 

 Pod mostly with a straight upper and incurved lower suture, indehiscent, or dehisc- 

 ing by the upper suture. Herbs or undershrubs, often armed terminally. Leaves 

 pinnate, leaflets mostly numerous rarely only 3 ; no stipels. Racemes or panicles 

 terminal. 20. Patagonium (Adesmia), p. 509. 



Subfamily /. MIMOSEsE. 

 i. MIMOSA Linn. 



Leaves bipinnate, often sensitive, sometimes reduced to phyllodes. 

 Flowers small, sessile, regular, in heads or spikes; stamens usually 

 numerous. Calyx small, or pappus-like. Legume with its 2 valves sepa- 

 rating from a persisting septum. 



Species 300, most in tropical and subtropical America. A few in S. 

 Asia and Africa. Not in Australia, except M. pudica L. 



M. ROC/E Ltz. & Nied. 



A woody, decumbent shrub, unarmed, but tomentose, with stellate wool. 

 Leaves with 2 pairs of pinnae, the common petiole ending in a stipuliform 



