KEY TO THE SPECIES OF PLECTBITIS AND ALIGERA. 23 



like P. congesta, except that the flowers are much smaller 

 and white. — California. 



P. magna (Greene) Suksdorf. Wings meeting below, 

 slightly open above. — Sonoma Co., California. 



-!— -h- -J— Fruit winged ; spur wanting or rudimentary. 



P. anomala (Gray) Suksdorf. Wings broad, meeting at 

 base, wide apart above.— Lower Columbia Eiver. 



Aligera Suksdorf. 



Fruit winged, its lateral faces equal, narrower than the 

 ventral one ; wings equally incurved above and below, form- 

 ing with the ventral face a dish or vessel, orbicular or oval in 

 outline, and saucer- bowl- cup- or urn-shaped, or often resem- 

 bling a breathing-pore or stoma with its cavity, the incurved 

 part of the wings in the latter case imitating guardian cells. 

 Cotyledons parallel to the ventral face, plainly reticulated 

 when expanded. 



*Corolla 2-lipped, red or rose-color, rarely white ; upper 

 lip erect, arched, 2-lobed or emarginate ; lower lip ascending 

 or spreading, 3-parted. 



+- Corolla 2 — 3 mm. long ; spur 2 — 3 mm. long. 



A. macroptera Suksdorf. Disk much longer than the 

 fertile cell, orbicular or oval, saucer- or bowl-shaped. — Wash- 

 ington and Oregon. 



A. macrocera (T. & G.) Suksdorf. Disk cup-shaped, 

 orbicular, shorter than the fruit. — California. 



A. ciliosa (Greene) Suksdorf. Disk oval or roundish, 

 stoma-shapecl, its opening elliptical- rhombic, or roundish and 

 larger. — California. 



+- +- Corolla 1.5 mm. long ; spur 1 mm. long. 

 A. rubens Suksdorf. Disk about as long as the fruit, 

 orbicular, somewhat urn-shaped. — Klickitat Co., Washington. 



