Part 5, 1929] 



FABACEAE: GALEGEAE 



257 



Leaves oblaneeolate, canescent, not pungent; pod not mottled. 

 Leaves (except the earliest ones) almost filiform, sparingly hairy, pungent- 

 pointed; pod mottled. 



2. TenELU 

 Pod sbort-stipitate. 



Flowers ochroleueous ; plant blackening in drying. 

 Legume glabrous. 



Stipe of the pod rarely exceeding the tube of the calyx; leaves usu- 

 ally spreading in age ; leaflets oblong or oval, obtuse or mucronate 

 Stipe of the pod usually exceeding the calyx-teeth, leaves strongly 

 ascending; leaflets narrowly linear, mostly acute. 

 Stipe 3-4 mm. long; stem strigose; calyx-teeth half as long as 



the tube. 

 Stipe 5-7 mm. long; stem glabrous; calyx-teeth about equaling 

 the tube. 

 Legume strigose. 

 Flowers white or tinged with purple or blue; plant not blackening. 

 Corolla 5-S mm. long; pod about 1 cm. long, 3 mm. wide. 

 Legumes with both of the sutures curved. 

 Pod glabrous. 

 Pod strigose. 

 Legumes with the lower suture straight. 

 Corolla 12-15 mm. long; pod 2.5-3 cm. long and 6 mm. wide. 

 Pod strictly sessile. 



Leaflets narrowly linear; corolla 10-15 mm. long. 



Corolla white, 10-12 mm. long; pod broadly oblong, straight. 

 Corolla purple, about 15 mm. long; pod Hnear-oblong, arcuate, 

 pubescent. 

 Leaflets oblong to oval; corolla 4-8 mm. long. 



Stem more simple, 2 dm. high or more; racemes many -flowered, 

 elongate. 

 Pod hairy; plant green. 

 Pod glabrous; plant canescent. 

 Stem densely cespitose, 1-2 dm. high; racemes few-flowered. 



Leaflets oblong or lanceolate, 5-10 mm. long; corolla 6-8 mm. long. 

 Pod oblique, straight or slightly concave on the upper suture; 



leaflets lanceolate, long-acute. 

 Pod elliptic, both sutures convex; leaflets oblong, abruptly 

 acute or obcordate. 

 Leaflets obovate or obcordate, 2-5 mm. long; corolla 4 mm. long. 



3. Bourgoviani 



Calyx-teeth subulate or lance-subulate, attenuate. 



Leaflets lance-oblong, mostly acute, those of the lower leaves obtuse or 



rounded at the apex. 

 Leaflets oblong or oval, at least those of the lower leaves retuse or emargi- 

 nate at the apex. 

 Calyx-teeth deltoid, obtuse; leaflets oval or obovate, retuse at the apex. 



5. //. simplicifolius. 



6. //. lingulatus. 



H. dispar. 



&. H. tenellus. 



9. H. slipilalus. 

 10. //. strigulosus. 



1 1 . H. acerbus. 



12. H. Standleyi. 



13. H. Dodgeanus. 



14. II. Episcopus. 



15. H. lancearius. 



16. //. Wuodruffl. 



17. H. Clemenlis. 



18. H. ivingatantis. 



19. H. amphidoxus. 



20. H . vexillijlexus . 



21. H. tegelarioides. 



22. H. Bourgovii. 



23. H. retusus. 



24. H. amblyodon. 



4. Campestres 



Corolla ochroleueous, usually without tinge of purple; upper leaves reduced 

 to filiform phyllodes or the rachis greatly produced, without a terminal 

 leaflet ; canescent rush-like plants with branched root -stocks. 

 Pod 2-3 mm. wide, 2.5—3.5 cm. long. 



Calyx more or less black -hairy; pods tapering towards the base. 



Calyx-teeth subulate, longer than broad; leaflets linear-subulate or 



linear. 25. H. campestris. 



Calyx-teeth triangular, as broad as long; leaflets linear to linear- 

 oblong. 26. H. junciformis. 

 Calyx white-hairy; teeth triangular; pods strictly linear; leaflets nar- 

 rowly linear to filiform. 27. H. junceus. 

 Pod 4 mm. wide, less than 2 cm. long. 28. H. orthocarpus. 

 Corolla white, pink, or purplish, rarely ochroleueous, at least the keel tipped 

 with purple; terminal leaflet usually well developed; plants with 

 cespitose caudices. 

 Pod strigose, rarely becoming glabrate in age. 



Leaflets strigose on both sides, usually densely canescent. 

 Leaflets narrowly linear or narrowly lance-linear. 

 Pod straight. 



Calyx-teeth almost as long as the tube; plant 2-4 dm. high; 



corolla purplish. 29. H. strigosus. 



Calyx-teeth shorter than the tube; plant less than 2 dm. 



high; corolla ochroleueous with purple-tipped keel. 30. H. tenuifolius. 



Pod arcuate; plant 1-2 dm. high. 31. H. deenmbens. 



Leaflets lanceolate or lance-oblong, 4-8 mm. long, 1-2.5 mm. wide; 



plant less than 1 dm. high. 32. //. divergens. 



