126 XV. POLYGALE^ (OLIVEU). [Polygala. 



Erect, 1-3 ft. Leaves linear, tapering. Lateral petals entire or 



slightly depressed on oblique inner side 3. P. tenuicaulis. 



Erect, slender, 1-2 ft. Leaves filiform. Lateral petals with 



erect lateral tooth or 2-fid 4. P. aparsijlora. 



Forking or diffuse, 3-24 in. Leaves linear to obovate-elliptical 

 obtuse. Flowers reflexed in dense strobiliform heads, the lower 

 often axillary 5. P. arenaria. 



Erect or decumbent. Leaves oval or lanceolate, acute. Racemes 



2-4 in. "Wings very obtuse, 5-3-nerved 7. P. persicaria/olia. 



Racemes lateral. 



Ascending or diffuse. Leaves linear or oblong, obtuse. Flowers 



fascicled or racemes much shorter than leaves, pubescent . . 6. P. trijlora. 



Erect or decumbent. Leaves oval or lanceolate, acute. Racemes 



2-4 in. or lower congested. Wiugs very obtuse, 5-3-nerved . 7. P.persicariafolia. 



"Wiry, suffrutescent. Leaves oblanceolate, obtuse. Racemes very 



short. Wings broadly ovate with numerous looping nervures . 8. P. Senensis. 



Shrubby, about 6 in. Leaves rather rigid, elliptical, raucronulate, 

 reticulate. Racemes few-flowered, extra-axillary. "Wings ellip- 

 tical, narrower than capsule 9. P. Myrtillopsis. 



(Compare P. arenaria.) 



* Bracts caducous. Racemes terminal. 



(Compare P. Gomesiana.) 



Strophiole conspicuous. 



Erect or ascending. Leaves linear or oval, apiculate. Lateral 



petals orbicular, unguiculate 10. P. ahyssinica. 



Leafy herb of about 6 in. Leaves large, obovate-elliptical, f-1^ 



in. broad. "Wings deciduous 11. P. Mannii. 



Strophiole obsolete. 



Depressed, wiry. Leaves oblanceolate obtuse or retuse. Lateral 



petals obovate-cuneate 12. P. irregularis. 



Filiform. Leaves filiform. "Wiugs elliptical, equalling elliptical 



obtuse capsule 13. P. paludosa. 



Filiform. Leaves \ in., lanceolate or linear. Flowers rather 

 dense. "Wings roundish-elliptical, much longer than ovate-or- 

 bicular, nearly entire capsule 14. P. capillaris.. 



Two to four inches. Leaves linear. Flowers rather crowded. 

 "Wings nearly orbicular. Capsule orbicular, emarginate or sub- 

 entire 15. P.micrantka. 



B. Anterior sepals connate. 



Wing-sepals deciduous. 



Shrub. Leaves acicular (or narrow-linear), fascicled . . . . 16. P. acicularis. 

 Slender erect annual. Leaves filiform. Flowers rather distant, 



in slender racemes 17. P. guineensis. 



Wing-sepals persistent. 



Branches slender. Leaves narrow-linear or filiform. Flowers in 



terminal erect racemes. Carina cristate 18. P. rarifolia. 



Erect, slender. Leaves linear, narrowed to each end, membra- 

 nous. Racemes terminal. Crest 19. P. Petitiana. 



. "Wiry undershrub 1 ft. or less. Leaves linear or oblanceolate, 

 pointed or mucronulate. Racemes terminal or extra-axillary, 

 often very short 20. P. Huillensis. 



1. P. Gomesiana, Welw. in Linn. Tram, xxvii. (ined.) t. 4. An 



