106 ENGLISH BOTANY. 



nci^^hbourhood of Lincoln, " in the north field of Blankuey, near 

 the road to Lincoln." 



England. Perennial. Late Summer and Autumn. 



Stems weak, slender, with raised lines, but without wings, 2 to 

 4 feet long. Leaflets | to 1^ inch long, widest rather beyond the 

 middle. Stipules about as long as the petiole exclusive of the 

 tendril. Peduncles 2 to 5 inches long. Lowest calyx-tooth longer 

 and narrower than the others. Plowers f to f inch long, bright- 

 crimson. Standard with the lamina orbicular, slightly emarginate, 

 spreading at right angles to the claw and with the sides reflexed, 

 a little longer than the wings and keel. Style curved upwards and 

 twisted on its own axis. Pods f to 1:|: inch long, often clavate in 

 the Pyfield plant, from the seeds towards the base being abortive ; 

 the sides have anastomosing longitudinal oblique veins. The ripe 

 seeds I have not seen, as the corn is cut before the pods have time 

 to arrive at maturity ; but the seeds set, so that Dr. "Walker- Arnott 

 is mistaken in saying the flowers fall olF without bearing fruit. — 

 (Brit. PI. ed. viii. p. 606.) Plant pea-green, glabrous. 



This plant is remarkable for the subterranean tubers, which are 

 1 to 2 inches long, broadest at the sessUe base, and tapering to the 

 apex. 



Tuberous Vetchling. 



French, Gesse Tubereuse. German, Erdnuss. 



This showy pea is cultivated in Holland for its edible roots. Gerarde calls it the 

 Peas-earthnut. 



SPECIES VI.— LATH YRUS SYLVESTRIS, Linn. 

 Plate CCCCII. 



Rootstock creeping, without tubers. Stem climbing or trailing, 

 with wings as broad as or broader than itself. Leaves with 1 pair 

 of elliptical-lanceolate or linear-lanceolate acute mucronate leaflets; 

 common petiole with a wing nearly as broad as itself, terminating in 

 a much-branched tendril. Stipules lanceolate, half-sagittate at the 

 base with a slender acute auricle. Peduncles axillary, longer than 

 the leaves, 3- to 10-flowered. Plowers spreading, in a lax raceme. 

 3 lower calyx-teeth triangular, about as long as the tube ; the 

 upper pair deltoid and much shorter than the tube. Corolla more 

 than twice as long as the calyx. Pods cylindrical-oblong, com- 

 pressed, glabrous. Seeds transversely globular-ovoid, compressed, 

 dim, black, faintly tuberculated with the tubercles separate ; hUum 

 one-half the circumference of the seed. 



In bushy places, woods, and hedges, or on rocks. Local. 

 Found in most of the EngUsh counties, but very rare in Scotland. 



