NORTH AMERICAN FLORA 



[Volume 25 



Sepals glandular- 

 ciliolate; seed 2 

 mm. long. 

 Sepals not glandu- 

 lar-ciliolate; 

 seed 1.3-1.6 

 mm. long. 

 Leaves fleshy, 

 sp a t u 1 ate- 

 o b o v a t e ; 

 flowers pink; 

 wings obo- 

 vate. 

 Leaves not 



fleshy, most- 

 ly lanceolate 

 or elliptic; 

 flowers white; 

 wings oval. 

 Seed 2.3-2.5 mm. long; cap- 

 sule elliptic or oblong- 

 elliptic, 2.5-2.9 mm. long. 

 Leaves alternate throughout or 

 whorled only at base of 

 stem. 

 Wings 1 .8-2.1 mm. long ; 

 seed cylindric-ellipsoid, 1.7 

 mm. long. 

 Wings 2.6-3.5 mm. long; 

 seed ellipsoid, 2.3-2.5 

 mm. long. 

 Capsule elliptic or oblong- 

 elliptic. 

 Capsule ovate-oblong. 

 Capsule 3—4 mm. long, ovate-elliptic; 

 seed ellipsoid-obeonic, rostrate at 

 base, 2.8 mm. long; aril less than 

 half as long as seed. 

 Leaves squamiforra, 5 mm. long or less. 

 Racemes capitate, ovoid, or cylindric, obtuse 

 or merely apiculate. 

 Sepals filiform-subulate from a short ovate 

 t base, longer than the wings. 

 Sepals lanceolate to oval, shorter than the 

 wings. 

 Wings broadly elliptic or oval, (2.8-) 

 4.5-6.3 mm. long, about twice as 

 long as keel; aril more than half 

 as long as seed. 

 Leaves alternate, linear to linear- 

 elliptic. 

 Racemes not comose at apex; 



seed subglobose-pyriform. 

 Racemes slightly comose at 

 apex; seed ellipsoid. 

 Leaves in whorls of three, oval or 

 obovate. 

 Wings equaling or but little longer than 

 keel; aril usually less than half as 

 long as seed. 

 Leaves all alternate. 



Racemes 4—6 mm. thick; wings 

 2.1-2.5 mm. long; pedicels 

 0.8-1 mm. long. 

 Racemes 6-13 mm. thick; wings 

 2.7-6 mm. long; pedicels 

 1.3-2.8 mm. long. 

 Bracts deciduous. 



Wings 2.7-3.6 mm. long; 

 pedicelsl.8-2 mm. long; 

 racemes usually 6-9 

 mm. thick. 

 Wings 3.5-4.7 mm. long; 

 pedicels 2.2-2.8 mm. 

 long; racemes usually 

 10-12 mm. thick. 

 Bracts persistent. 



Racemes 9-13 mm. thick; 

 wings 3-6 mm. long; 

 capsule 2.5-3 mm. long. 



120. P. aparinoides. 



121. P. turgida. 



122. P. subalata. 

 124. P. alba suspecla. 



123. P. praelervisa. 



124. P. alba. 



125. P. hecatantha. 



126. P. Wilsonii. 



127. P. sqaamifolia. 



128. P. crinita. 



129. P. viridescens. 



130. P. hygrophila. 



131. P. Timoutoit. 



132. P. Nuttallii. 



133. P. mariana. 



134. P. Harperi. 



135. P. Curtissii. 



