- Lathyrus (Tourne) Le Wild Sweet Pea, 
7 Herbaceous vines with alternate tendril-bearing leaves, the tendril 
often inconspicuous or reduced to a small appendage, Flowers in axillary 
racemes or solitary. Calyx 5-lobed, the lobes unequal, the lower longer, 
the tube gibbous at the basee Stamens 10, the uppermost free, the lower 
9 united, Style hairy at the apex on the upper side only. Pods usually 
very flat, dehiscent by 2 valvese : 
O Corolla yellowish or whitish; leaflets mostly 2-2-5 cm. » 
4. broad, the tendril usually branching, 2-5 cm. long + 
i) 2 Calyx teeth acuminate, mostly half as long as the tube /, L. Parkerd 
2 Calyx teeth blunt, the lower subequal to the tube Pp. Le ochroleu 
—_ 
© Corolla purple; leaflets 1-20 mm. broad, the tendril 
ete to a’ short herbaceous sometimes trifurcate 
tip 
2, Herbazse softly pubescent 3 Le Nuttalli 
2 Herbage glabrous or at most finely puberulent 
4 Stems more or less erect, 66-70 cm. tall; 
R leaflets mostly obtuse 4. Le. pauciflo 
4 Stems 15-25 cm. tall, more or less decumbent; 
8 leaflets mostly acute, even linear 
G Leaflets 1-2 om. broad; banner 20-25 mm. long x L. nevadens 
& LeafletsA-12 m. broad; banner 14-15 mm. long ¢ L. bijugetu 
4 tonsa 
