Part 6, 1929] 



FABACEAE: GALEGEAE 



333 



Corolla purplish; pod less than 1.5 cm. long, the upper suture 

 straight. 

 Pod densely white-strigose. 

 Racemes many-flowered, about twice as long as the leaves. 

 Pod turgid at least below. 



Plant canescent; corolla dark, blue-purple. 

 Calyx white -hairy. 

 Calyx black -hairy. 

 Plant glabrate; corolla white. 

 Pod compressed; plant slightly strigose; corolla white. 

 Pubescence of the pod spreading. 



Pod short-villous; racemes many-flowered. 



Flowers purple, subsessile; pod densely pubescent. 

 Flowers whitish, distinctly pedicelled; pod sparingly pubescent. 

 Pod long-villous; racemes few-flowered. 



Branches not decumbent; plant mainly strigose. 



Leaflets oblong; inflorescence much shorter than the leaves; plant 



annual. 

 Leaflets obovate; inflorescence as long as the leaves; plant suffruti- 

 cose. 

 Branches decumbent; plant loosely villous. 



18. Pubentissimak 



Pod villous, acutish on the upper suture. 



Pod strongly incurved 



Pod straight or slightly upcurved. 

 Pod minutely strigose; upper suture not acute, gibbous. 



19. Pychnostachyae 



Leaves and stem densely canescent; pod glabrous. 



Plant merely canescent; calyx-teeth at least half as long as the tube. 

 Plant silver-white; calyx-teeth one fourth to one third as long as the tube. 

 Leaves green and stem strigose or pilose, green; potf pubescent. 



Leaves sparingly pubescent or glabrate; peduncles 5-10 cm. long. 

 Leaflets obtuse or rounded at the apex; pod rather long-hairy. 

 Leaflets retuse at the apex; pod sparingly short-hairy. 

 Leaves rather copiously long-pilose or villous; peduncles 1-4 cm. long. 



20. JEJUNAH 



Rachis of the leaves not spinescent; pod slightly puberulent, mottled, nearly 



1 cm. long. 

 Rachis of the leaves spinescent; pod white-pubescent, 4-6 mm. long. 



21. Microcystes 



Pod globose, sparingly canescent-strigose. 

 Pod obovoid or ellipsoid, longer than broad. 

 Pod pubescent. 



Leaves with 6-12, rarely 5, pairs of leaflets. 

 Pod black -hairy. 



Plant 3-6 dm. high; racemes many-flowered, longer than the 



leaves. 

 Plant 1-2, rarely 3 dm. high; racemes few-flowered. 



Leaflets lance-linear to oblong, mostly acute or obtuse. 

 Leaflets oval or elliptic, mostly retuse. 

 Pod white-hairy, straight on the upper suture. 

 Leaves with 3-5, rarely 6 pairs of leaflets; pod grayish-strigose or 

 short-villous. 

 Peduncles many times as long as the few-flowered raceme; pod nar- 

 rowly ellipsoid. 

 Corolla purple; leaflets glabrous above, usually retuse at the 

 apex. 

 Racemes short; pod oval, with both sutures convex, black- 

 hairy. 

 Leaflets 5-13, elliptic or lance-elliptic; corolla 7-8 mm. 



long; flowers ascending. 

 Leaflets 9-19, oval or rarely elliptic; corolla 8-10 mm. 

 long; flowers spreading. 

 Racemeslax; corollaabout 10mm. long; pod nearly straight 

 on the upper suture, white-hairy. 

 Corolla white; leaflets pubescent on both sides, rounded at the 

 apex. 

 Peduncles about equaling the racemes; pod obovoid. 

 Pod glabrous; racemes very long and lax. 



64. P. insularis 



65. P. arida. 



66. P. Vaseyi. 



67. P. metana. 



68. P. Deanei. 



69. P. Palmeri. 



70. P. prorifera. 



71. P. Juliana. 



72. P. sabulonum. 



73. P. arenicola. 



74. P. lerdoensis. 



75. P. pubentisstma. 



76. P. Pulsiferae. 

 49. P. serpens. 



P. pychnostackya, 

 P. lanosissima. 



79. P. HornH. 



80. P. bajaensis. 



81. P. tularensis. 



82. P. jejuna. 



83. P. humillima. 



84. P. Thurberi. 



86. P. leptalea. 



87. P. stragala. 

 89. P. Prebhlei, 



22. PREUSSIANAE 



Stipe 1 .5-2 cm. long, much exceeding the calyx. 

 Stipe not exceeding the calyx. 



88. P. Yukonis. 

 87. P. stragala. 



89. P. Prebblei. 



90. P. quinquejlora. 



91. P. microcystis. 



92. P. scalaris. 



93. P. ampuUaria. 



