XXV. PAPILIONACE^l. 101 



4 f Lips of the calyx deeply toothed J. GENISTA. 



\ Teeth of lips very short S. CYTISUS. 



Keel of the corolla very pointed 6 



Keel of the corolla obtuse 7 



Leaves with 1 or 3 leaflets. Flowers solitary or in racemes. Stamens mona- 



delphous 4. ONONIS. 



Leaves linear, without leaflets. Flowers solitary or in racemes. Stamens 



diadelphous 17. LATHYRUS. 



Leaves with a pair of leaflets at the base of the stalk besides the 3 at the 



top. Flowers in umbels. Stamens diadelphous .... 9. LOTUS. 

 ( Shrubs or undershrubs. Stamens monadelphons . . . . 2. GENISTA. 



' \ Herbs. Stamens diadelphous 8 



R ( Leaves simple or reduced to a tendril 17. LATHYRUS. 



\Leaves with 3 leaflets 9 



9 ( Pod much curved or spirally twisted. Flowers in short racemea 5. MEDIOAOO. 



( Pod straight or nearly so 10 



10 1 Flowers in long racemes 6. MELILOTUS. 



\ Flowers in heads or short racemes 11 



Pod several-seeded, much longer than the calyx . . . .7. TRIQONELLA. 

 Pod 1- to 4-seeded, seldom exceeding the calyx .... 8. TRIFOLIUM. 



Flowers in umbels or globular heads IS 



Flowers in spikes or racemes, or solitary 17 



Umbels with a leaf at the top of the peduncle immediately under the flowers 14 



Umbels leafless 16 



Calyx inflated, enclosing the pod 10. ANTHYLLIS. 



Calyx not inflated, shorter than the pod 15 



Leaflets 5. Keel pointed or beaked. Pod not jointed ... 9. LOTUS. 



Leaflets many. Keel obtuse. Pod jointed 13. ORNITHOPUS. 



Keel very pointed 14. HIPPOCREPIS. 



Keel small, obtuse. Flowers minute 13. ORNITHOPUS. 



Common stalk of all the leaves ending in a terminal leaflet. Stipules not 



sagittate 18 



Common stalk of the leaves, at least some of them, ending in a tendril or fine 



point Stipules sagittate, or half-sagittate 20 



Pod short, flat, with 1 seed 15. ONOBRYCHIS. 



Pod turgid, or elongated, with several seeds 19 



Keel with a short, distinct point 12. OXYTROPIS. 



Keel obtuse, without any point 11. ASTRAGALUS. 



Style filiform or angular, hairy on the outer side or all round. Leaflets small 



and numerous (except in V. bithynicd) 16. VICIA. 



Style flattened, hairy on the inner side only. Leaflets usually few, and 

 rather large 17. LATHYRUS. 



Among the very numerous Peaflowers cultivated in our gardens, and 

 belonging to genera entirely exotic, the most common are, amongst trees, 

 two species of Laburnum, the Robmias (commonly called Acacias, but 

 not the A cacias of botanists) ; among shrubs, the bladder Senna (Colutea 

 arborcscens), the Spanish Broom (Spartium junceum), several species of 

 Caragana, CoroniUa, &c. ; in flo.wer gardens, several Lupines, the 

 French Honeysuckle (Hedysarum coronarium), &c. ; and in kitchen- 

 gardens, the French Bean (Phaseolus vulgaris), the Scarlet runner 

 (Phaseolus coccineus), &c. ; whilst the Australian Chorozemas, Kennedyas 

 and others, the New Zealand Edwardsias and Clianthus, the East Indian 

 Piptanthus, Indigos, &c., the Chinese Millettia (Wistaria or Qlycvne of 

 gardeners), and many others, from various parts of the world, are con 

 spicuous in our plant-houses or on garden-walls. 



I. TTLEX. FURZE. 



Much branched, very thorny, green shrubs, with simple, prickle- 

 shaped leaves, and yellow flowers. Calyx coloured like the petals, 

 divided nearly to the base into two concave segments or lips, which 



