330 



PAPILIOXACEAE. 



[VOL. II. 



i. Lathyrus maritimus (L,.) Bigel. Beach 

 Pea. Sea or Seaside Pea. (Fig. 2215.) 



I'isum marifimuni L. Sp. PI. 727. 1753. 



Lathyrus marilimus Bigel. Fl. Bost. Ed. 2, 268. 1824. 



Perennial, glabrous or nearly so, stout, somewhat fleshy, 

 slightly glaucous; stems angled, decumbent, i-2 long. 

 Stipules large and foliaceous, ovate, half-hastate, acute, 

 i '-2' long; leaves nearly sessile; leaflets 3-6 pairs, oblong, 

 oval or obovate, obtusish and mucronulate at the apex, 

 mainly narrowed at the base, somewhat larger than the 

 stipules; tendrils branched; peduncles shorter than the 

 leaves; flowers 6-10, 9"-! 2" long, purple; calyx-teeth 

 often ciliate; pod sessile, linear-oblong, nearly glabrous, 

 veined, 1%'-$' long, 4"-5" wide. 



Sea-beaches, New Jersey to arctic America, shores of the 

 C.rcat Lakes, and on the Pacific COMt AK> in northern Ku- 

 rope and Asia. May Any Sometimes blooming again late 

 in autumn. Also called S-.i--id.- Kverlasting I' 



2. Lathyrus venosus Muhl. Veiny Pea. 



. 



lathy Muhl.; Willd. Sp. PI. 3: 1092. 1803. 



I'inely pubescent or glabrous, perennial, ascend- 

 ing, climbing or decumbent, 2-3 long. vStems 

 strongly 4-augled; stipules lanceolate, half-sagittate, 

 acute or acuminate, 4 // -i2 // long; leaves petioled; 

 leaflets 4-7 pairs, ovate or oval, obtuse or acute 

 and mucrouulate at the apex, mostly rounded at 

 the base, i / -2 / long; tendrils branched; peduncles 

 shorter than the leaves; flowers purple, 6"-8" long; 

 calyx pubescent or glabrous; pod linear, sessile, 

 glabrous, veined, i^'-j' long, about 3" wide. 



River shores and hanks, western New Jersey and Penn- 

 sylvania to Indiana and Assiniboia, south to Georgia, 

 Louisiana and Kansas. Ascends to ;,=;<> feet in Virginia. 

 Leaflets often strongly reticulated. May-July. 



3. Lathyrus palustris L. Marsh Yetchling. 

 (Fig. 2217.) 



/Mthyriisftalnslri.'i L. Sp. PI. 733- '75.V 



Perennial, glabrous or spariugly pubescent; stems 

 angled and winged, slender, i-3 long; stipules half- 

 sagittate, lanceolate, linear, or ovate-lanceolate, 5"-io" 

 long, lYS'-iYi" wide; leaflets 2-4 pairs, lanceolate, ob- 

 long, or linear-oblong, acute or obtusish and mucronate at 

 the apex, narrowed or rounded at the base, i / -2 / ^ / long, 

 2 // -5 // wide; tendrils branched; peduncles generally about 

 equalling the leaves, 2-6-flowered; flowers purple, 5"-?' 

 long; pod linear, sessile, slightly pubescent, or glabrous, 

 i^ / -2^ / long, about 3 r/ wide. 



In moist or wet grounds, Labrador to Alaska, Massachusetts, 

 New York and British Columbia. Also in Europe and Asia. 

 May-Aug. 



