DICOTYLEDONOUS PLANTS 119 



1. Stamens with anthers of two forms. Leaves palmately com- 



* pound. 



Herbs. Leaves with many leaflets. Lupinus, VIII. 



Trees. Laburnum, IX. 



Low shrubs. Cytisus, X. 



2. Anthers all alike except in No. 14. 



Leaves usually with 3 leaflets. Leaflets with fine teeth, 



except in No. 14. 



(a) Pod coiled. Medicago, XI. 



(&) Pod not coiled. Flowers in racemes. Melilotus, XII. 



(c) Pod not coiled. Flowers in heads. Trifolium, XIII. 



(d) Leaflets entire. Psoralea, XIY. 



3. Leaves odd-pinnate, with more than 3 leaflets. 



(e) Low woody shrubs. Amorpha, XV. 

 (/) Tall twining shrubs. Wistaria, XVI. 

 (g) Trees. Robinia, XVII. 

 (A) Herbs. Astragalus, XVIII. 



4. Leaves pinnate, the midrib prolonged into a tendril. 



(i) Leaflets usually many pairs. Style slender, bearded 

 only at the tip or all round the upper portion. Pod 

 2-several-seeded. Vicia, XIX. 



(/) Leaflets few or several pairs. Style bearded along one 

 face only. Pod several-seeded. Lathyrus, XX. 



(&) Leaflets 1-3 pairs. Style enlarged above, grooved on 

 the back. Pod several-seeded ; seeds large, globular 

 or nearly so. Pisum, XXI. 



I. DESMANTHUS, Willd. 



Shrubs or perennial herbs ; stems erect or diffuse, smooth. 

 Leaves abruptly twice-pinnate ; stipules small. Flowers in 

 heads or spikes, on axillary peduncles, the upper perfect, the 

 lower often staminate or neutral. Calyx 5-toothed. Corolla 

 of 5 distinct petals or 5-cleft. Stamens 5-10, distinct. 

 Ovary nearly sessile, flat, several-seeded.* 



