Melilotus. | XXV. PAPILIONACHE. | 109 
and vineyards. Occasionally found in many parts of England, Ireland, and 
Scotland, but probably introduced with corn or ballast. £1. rather late 
im summer, 
ees — 
VII. TRIGONELLA. TRIGONEL. 
Herbs, with leaves pinnately trifoliolate; the leaflets usually toothed ; 
the leafy stipules adhering to the leafstalks, the flowers axillary, solitary 
or in heads spikes or short racemes. Calyx 5-toothed. Keel obtuse. 
Stamens diadelphous, the upper one entirely free. Pod protruding from 
the calyx, several-seeded, either thick and narrow or elongated, or in exotic 
species flat and broad, straight or slightly curved. 
The genus is widely spread over southern Europe, Asia, and the Medi- 
terranean region, with one Australian species. The only British species is 
somewhat anomalous, and had formerly been referred to Trifolium, but the 
petals are all quite free from the staminal tube, and the pod is much 
longer than in any Trifolium, differing from some exotic true Zrigonellas 
of the section Buceras only in being less prominently veined. 
1, T. ornithopodioides, DC. (fig. 243). Bird’s-foot Trigonel.—A 
little annual, with thickly matted spreading stems, rarely more than 2 or 
3 inches long, and usually glabrous. Leaflets inserted close together at the 
summit of the stalk, obovate or obcordate, and toothed. Flowers small, 
nearly white, solitary or 2 or 3 together in each axil, the lower ones nearly 
sessile, the upper ones on stalks of 2 to 4 or even 5 lines, Calyx-teeth 
slender. Pod narrow, slightly curved, glabrous, surrounded at the base by 
the persistent petals as in Zrzfolium, but much exceeding them. Seeds 
6 to 8. 
In dry sandy pastures, chiefly near the sea, in western and southern 
Europe, extending northward to Denmark. Im several maritime counties 
of England, Ireland, and southern Scotland. #7. early summer. 
=e 
| VIIL TRIFOLIUM. CLOVER. 
Herbs, with stipules adhering to the leafstalks. Leaves pinnately or 
almost digitately trifoliolate; the leaflets often toothed, Flowers red, 
white or yellow, in close heads. Calyx 5-toothed. Petals narrow, often 
connected together, and attached to the staminal tube by the claws, and 
usually remaining round the pod after fading. Stamens diadelphous, the 
upper one entirely free. Pod enclosed in the calyx, or in the persistent 
petals, containing from 1 to 4 seeds, and usually indehiscent. 
A very widely spread and numerous genus in the northern hemisphere, 
both in the new and the old world, deficient in several tropical regions, but 
reappearing in southern America and Africa. It is readily distinguished 
from Medicago and Trigonella by the pod, from Melilotus by the compact 
heads of flower, and most of the species differ from all allied genera by the 
petals, either all or the three lower ones only, connected by their claws 
with the staminal tube. 
Heads of flowers pedunculate in the axils of the leaves, or above the last 
leaves of the stem : < SURSES haik POUr . : : me eres 2 
fe of flowers closely sessile in the axils, or within the last leaves of the : 
stem . ° ° e ‘ e ° ° e ° e ° e e e 
2 Fo yellow, reflexed and brown when faded. : : : : . 
Flowers red, white, or cream-coloured ° : ° oe ° ° 5 
Ore or 
