50 xlvii. § papilionace^: (baker). [Trigonclla. 



from the apex. Leaves oblanceolate, deeply serrated, 1-3 lines 

 long. Flowers 2-4 in sessile axillary clusters. Calyx ± in. deep, the 

 linear-setaceous teeth shorter than the tube. Corolla yellow, half as 

 long* again as the calyx. Pod elliptical, scarcely exserted, glabrous, 

 transversely reticulated with raised veins, usually 2-seeded. — T. arguta. 

 Vis. PI. iEgtpt. 33, t. 8, fig. 1. 



Nile Land. Sennaar and Kordofan, Kotschy ! Nile-bank at Ipsambul, Dr. Brom- 

 field! 



Egypt to N. India. 



4. T. marginata, Hochst. et Steud. in Sckimp. Hb. Abyss. No. 64. 

 Annual, copiously branched at the crown of the root, the branches 

 spreading-, 4-6 in. long, glabrous. Lower petioles over an inch. 

 Leaflets obovate-cuneate, |-J in. long, toothed, glabrous. Flowers in 

 copious capitate racemes of 6-12 each on peduncles \—\ in. long. 

 Pedicels very short. Calyx 1 J-2 lines long, the subulate teeth twice 

 as long as the tube. Pod oblong straight scarcely exceeding the calyx, 

 glabrous, 2-seeded. 



Nile Land. Abyssinia, Schimper ! 



General habit very like that of T. ornithopodioides, but the pod different. 



5. T. lacmici, ^, Linn. ; DC. Prod. ii. 184. A diffuse glabrous annual 

 with stems a foot or more long. Stipules laciniate from the apex. 

 Leaflets obovate-cuneate, deeply serrated, 4—9 lines long. Flowers 

 6—12 in congested axillary racemes on peduncles 3-18 lines long. 

 Calyx I in. deep, teeth setaceous, equalling the tube. Corolla bright 

 yellow, nearly twice the calyx. Pod linear-oblong, straight, glabrous, 

 transversely reticulated with raised lines, 5-6-seeded. 



Nile Land. Banks of the Nile near Dongola, Dr. Bromfieldl 

 An Egyptian species. 



10. MEDICAGO, Linn. ; Benth. et Hook. f. Gen. Plant, i. 487. 



Calyx-tube short, with 5 subequal teeth. Corolla caducous, petals 

 free from the staminal tube; standard obovate, keel short obtuse. 

 Stamens diadelphous, filaments not dilated, anthers uniform. Ovary 

 sessile, usually multiovulate, style subulate, glabrous, stigma oblique. 

 Pod usually many times spirally twisted, often muricated. — Herbs, often 

 annual, with pinnately trifoliolate leaves. 



A considerable genus, with its head-quarters round the Mediterranean, to the Flora 

 of which all our species belong. 



Biennial; pod reniform, one-seeded 1. M.lupulina. 



Annual ; pod 3-4 times spirally twisted. 



Pod broader than deep, not muricated 2. 31. orbicularis. 



Pod globose, muricated. 



Spines hiding the finely-veined faces. 



Stipules subentire 3. M. minima. 



Stipules laciniated 4. 31. laciniata. 



Spines not hiding the reticulated faces 5. M. denticvlaia. 



Pod barrel-shaped, muricated 6. M. tentaculata. 



