Part 4, 1924] 



POLYGALACEAE 



313 



Racemes 6-10 mm. thick; 

 wings 3-3.8 mm. long; 



capsule 1.8-2 mm. long. 136. P. Chapmanii. 

 Leaves whorled at least below. 

 Plants annual. 



Aril four-fifths as long as 

 seed or more; wings 

 mucronate to acumi- 

 nate at apex 

 Wings ovate to ovate-ob- 

 long, merely acute 

 and short-mucro- 

 nate; racemes 6—12 

 mm. thick. 

 Racemes acuminate to 

 apiculate; wings 

 1.3-1.5 mm. wide; 

 leaves 0.5-1 mm. 

 wide. 137. P. Hookeri. 



Racemes mostly ob- 

 tuse; wings 1.5-2.3 

 mm. wide; leaves 

 1—5 mm. wide. 

 Wings acuminate and 

 strongly cuspidate from 

 a deltoid base; racemes 

 10-17 mm. thick. 

 Aril two-thirds as long as 

 seed or less; wings usu- 

 ally rounded at apex. 

 Wings 1-1.8 mm. long; 

 leaves chiefly linear. 

 Pedicels 1.2-1.5 mm. 

 long ; wings 1.8mm. 

 long. 

 Pedicels less than 1 

 mm. long; wings 1- 

 1.3 mm. long. 

 Wings 3 mm. long; leaves 

 rhomboidal. 

 Plants perennial. 



Flowers rosy; leaves rhom- 

 boidal. 142. P. crucianelloides. 

 Flowers white; leaves linear 

 to spatulate-obovate. 

 Leaves linear-lanceolate. 143. P. saginoides. 

 Leaves spatulate-obovate. 144. P. spalhulata. 

 Leaves scale-like, strictly alternate, 0.5-2 mm. 

 long. 

 Wings less than half as long as keel; stem glaucous; 

 aril cellular, equitant, not obviously lobed. 

 Leaves lance-ovate or lance-elliptic to ovate or oval- 

 ovate, mostly 0.8-3 cm. wide. 

 Cleistogamous flowers present, borne on short leafless basal 

 branches; flowers bright rosy-purple, in loose racemes. 

 Capsule oval, 2.5-4 mm. long; seed 1.8-2.8 mm. long. 

 Capsule oblong. 4.1-4.3 mm. long; seed 3.2-3.5 mm. long. 

 Hairs of seed glochidiate. 



Stem densely pedicellate-glandular, rather leafy; wings 



obovate-oval, 2.3-2.5 mm. long. 

 Stem glabrous or sparsely papillose-glandular, usually 

 nearly naked at flowering time; wings oval, 3 mm. long. 

 Seeds obconic, densely silky-comose. 

 Capsule much longer than wings. 



Stem densely pedicellate-glandular; wings equaling keel. 

 Stem glabrous; wings much shorter than keel. 

 Capsule about equating wings or shorter. 

 Plant annual. 



Wings strongly cuspidate. 



Wings rounded to merely apiculate. 



Wings 4.7-5.3 mm. long; aril minute. 



Wings 2.7-3.6 mm. long; aril 0.5-1.3 mm. long. 



Crest of keel of 3-4 pairs of lobes; aril 0.5 mm. 



long. 

 Crest of keel of 2 pairs of lobes; aril 1.2-1.3 mm. 



long, 157. P. longiloba. 



Plant perennial. 158. P. perennis. 



Sepals decurrent on the winged pedicels; flowers yellow or orange, often turning green in drying, i 

 if white, with the racemes compounded into a cymose panicle. 



138. P. brevifolia. 



139. P. cruciate. 



140. P. confer la. 



141. P. sphaerocephala. 



142. P. crucianelloides. 



152. P. Berlandieri. 



153. P. brachyptera. 



154. P. longicaulis. 



155. P. adenophora. 



156. P. variabilis. 



