228 



THE TEAFLOWEll TRIBE. 



Perennials, with large red or purplish flowers. Pods 

 glabrous. 



Rootstock tuberous. Stems not winged 5. Earthnut P. 



Rootstalk without tubers. Stems winged .... 6. 'Everlasting P. 

 Perennial, with yellow flowers. Pods glabrous ... 4. Meadow P. 

 Leaves with two or more pairs of leaflets. 



Stipules deeply divided Pithy nian Vetch. 



Stipules entire. 



Leafstalk ending in a simple or branched tendril. 



Leaflets lanceolate. Stipules narrow, half-sagittate 7. Marsh P. 

 Leaflets ovate or elliptical. Stipules large, broadly 



ovate, sagittate 8. Sea P. 



Leafstalk ending in a short fine point. 



Leaflets 2 or 3 pairs, rarely 4 pairs, lanceolate or linear 



Leaflets 5 or 6 pairs, rarely 4 pairs, ovate 



. 10. 



Tuberous P. 

 Black P. 



The Sicilian sweet Pea, the Tangiers Pea, the South American 

 Ansons Pea, and some other exotic species, are cultivated in our flower- 

 gardens. The Pea of our kitchen-gardens and fields is usually distin- 

 guished as a genus, under the name of Pisum, but upon characters 

 which are hardly sufficient for the separation of a solitary specie's. 



1. Grass Pea. Lathyrus Nissolia, Linn. (Fig. 283.) 

 (Eng. Bot. t. 112. Vetchling. Grass Vetch.) 



An erect, glabrous annual, branching 

 from the base, about a foot high. Leaves 

 all reduced to a long, linear, grass-like, 

 flattened leafstalk, ending in a fine point, 

 without leaflets or stipules. Peduncles 

 long, bearing immediately below their 

 summit 1 or rarely 2 small pale-red 

 flow T ers. Pod long, narrow, and straight. 



In bushy places, grassy borders of 

 fields, and stony pastures, in central and 

 southern Europe to the Caucasus, but 

 not extending into northern Germany. 

 In Britain, spread over central and 

 southern England, but rare, and not 

 known in Ireland or Scotland. Fl. early 

 summer. 



Fig. 283. 



