268 Class XVII. Order IV. 



A small, hairy plant with turgid pods. Stem from four to 

 eight inches high, branching. Leaves alternate, sessile, oblong 

 or lanceolate. Stipules opposite and decurrent, so that the pair 

 appear inversely sagittate. Calyx segments long, lanceolate, 

 acuminate, hairy. Corolla small, yellow. Legume shortly stip- 

 itate, oblong, inflated, few seeded. Dry grounds. Cambridge. 

 July. Annual. 



288. PHASEOLUS. 



PHASEOLUS TRILOBUS. MX. Three lobed Bean Vine. 



Twining, pubescent, lower leafetc rhomboid-oval, 

 upper ones three lobed ; heads on long stalks; legumes 

 linear. 



Stem twining, angular. Stipules oblong. Leaves ternate, the 

 leafets broad, ovate, entire, the upper ones, especially the ter- 

 minal one, three lobed. Peduncles longer and larger than the 

 petioles, with a head of flowers. Banner spreading, white 

 tinged with red ; wings small, whitish ; keel slightly twisted, 

 tipt with purple. Legumes linear. South Boston. July. 

 Annual. 



289. LATHYRUS. 



LATHYRUS MARITIMUS. Beach Pea. 



L. caule compressor tetragono ; stipulis sagit- 

 tatis ; foliolis numerosis, subalternis, obovatis ; 

 pedunculis folio brevioribus, subseptemfloris. 



Stem compressed, four angled ; stipules sagittate ; 

 leafets numerous, subalternate, obovate ; peduncles 

 shorter than the leaves, about seven flowered. 



Syn. PISUM MARITIMUM. Pursh ? 



This plant, which has very much the habit and aspect of a 

 pea, is only found on the borders of the beach and salt marsh, 

 whence it has been often taken for the Pisum maritimum of 

 Europe. It is, however, decidedly a Lathyrus. The whole 

 plant has a glaucous aspect. Stems rigid, compressed, four 

 angled. Stipules arrow shaped, meeting each other round the 



