112 LEGUMINOS^E. [LATHYRUP. 



** Leaflets 2 or more pairs. Flowering peduncles longer or shorter than the 



leaves. 



6. Ii. palus'tris, L. ; stem winged, leaflets 2-3 pair sword-shaped, sti- 

 pules lanceolate ^-sagittate, peduncles usually longer than the leaves 2-6- 

 fld., pod compressed glabrous. 



Boggy meadows and copses, from York and Carnarvon to Somerset and 

 Suffolk, local ; Ireland, very rare ; fl. June-Aug. Glaucous, glabrous. 

 Rootstock creeping. Stems 2-4 ft., climbing or trailing, wings herbaceous. 

 Leaflets 2-3 pair, 2-3 in., nerves parallel ; tendrils rather short, branched ; 

 stipules in. Peduncles 1-4 in. ; pedicels shorter than the calyx-tube ; 

 bracts minute. Flowers |-| in., pale blue-purple. Calyx-ti(~be short. Pod 

 l|-2 in., stipitate, reticulate, 6-8-seeded. Seeds smooth. DISTRIB. Europe 

 (Arctic), N. Asia, N. America. 



7. Ii. marit'imus, Bigelow ; stem angled, leaflets 3-5 pair oblong, 

 stipules ovate ^-hastate, peduncles usually shorter than the leaves 5-10- 

 fld., pod turgid glabrous. Pisum marit'imum, L. 



Pebbly beaches on the E. coast, local; from Shetland to Kent and Dorset; 

 Kerry ; fl. June-Aug. Glaucous, glabrous. Rootstock long, stout, black. 

 Stems 1-3 ft., creeping at the base, prostrate. Leaflets 1-2 in., alternate or 

 subopposite, nerved, upper gradually smaller ; petiole 2-4 in. ; tendrils 

 short ; stipules nearly 1 in. Peduncles stout ; pedicels shorter than the 

 calyx ; bracts minute. Flowers -f in., purple, fading to blue. Pod 1^-2 

 in., reflexed, straight, 6-8-seeded. Seeds smooth. DISTRIB. Arctic and N. 

 Europe, Asia, and America. 



L. marit'imus proper ; leaflets broadly oblong obtuse. VAR. acutifo'lia, 

 Bab. ; slender, straggling, leaves elliptic-lanceolate acute. Shetlauds and 

 Orkneys. 



SECTION 4. Or'obus, L. ; (gen.). Perennial. Petiole ending in a short 

 point without tendrils. Calyx gibbous at the base. 



8. L. macrorrlii'zus, Winim. ; stem winged, leaflets 2-4 pairs, stipules 

 J-sagittate usually toothed below. 



Copses, &c., N. to Shetlands, ascends to 2,100 ft. in the Highlands ; Ireland ; 

 fl. June-Aug. Glabrous or very slightly hairy. Rootstock creeping and 

 forming tubers. Leaflets 1-2 in., f-lj in. broad, nerves parallel in the nar- 

 row forms, diverging in the broad ; petiole ^-1J in. ; stipules J in., rarely 

 quite entire, very variable. Peduncles slender, equalling or exceeding the 

 leaves, 2-6-fld. ; pedicels shorter than the calyx ; bracts minute. Flmuers 

 |-f in., lurid crimson, fading to green or blue. Calyx-teeth triangular, 

 shorter than the tube, upper very short. Pod subcylindric. Seeds globose. 

 DISTRIB. Europe. 



L. macrorrhi'zus proper ; leaflets elliptic-oblong acute or obtuse. Or'obus 

 tubero'sus, L. VAR. 0. tenuifo'lius, Both ; leaflets sword-shaped or narrow- 

 linear. 



9. Ii. ni'ger, Wimm. ; stem angled, leaflets 3-6 pairs oblong-lanceolate 

 acute or mucronate, stipules linear-lanceolate acute. 



Subalpine Scotch valleys; Den of Airly, Killiecrankie, Moy House; ascends 

 to 1,200 ft.; (native? Wats.); fl. June-Aug. Glabrous, black when dry. 



