Part 2, 1920] 



FABACEAE: PSORALEAE 



69 



Bracts lanceolate in side-view, comparatively gradually acumi- 

 nate; calyx pilose, nearly 4 mm. long. 

 Bracts ovate or oval in side-view, truncate and abruptly con- 

 tracted into the tail; calyx glabrous, less than 3 mm. long. 

 Tail of the bracts about half as long as the body. 

 Plant more or less pilose throughout. 

 Plant glabrous except the spike. 



XVIII. Capitatab 

 Stem pubescent. 

 Stem glabrous. 



Bracts brown, not conspicuously glandular; pubescence of the calyx 



appressed. 

 Bracts yellow with a green tip, conspicuously glandular; pubescence 

 of the calyx loose. 



XIX. Frutescentes 

 Calyx glabrous; flowers sessile. 



Spikes very short, about 1 cm. long. 



Spikes lax, 2-4 cm. long. 

 Calyx silky-strigose; flowers short-pedicelled. 



One species. 



One species. 



XX. Acutifoliae 



XXI. Cyaneae 



XXII. Tuberculatae 



Stem and leaves glabrous; spikes head-like; bracts obovate or oval, short- 

 acuminate; wings and keel inserted below the middle of the staminal 

 tube. 

 Spikes long-peduncled; bracts much shorter than the calyx; leaflets 



2-3 mm. long. 

 Spikes short-peduncled ; bracts equaling the calyx. 

 Bracts broadly obovate; leaflets 3-5 mm. long. 

 Bracts lanceolate; leaflets 1-2 mm. long. 

 Stem and leaves more or less pubescent, 



Calyx merely puberulent, brown, conspicuously glandular; leaflets 11- 



21, small, 2-3 mm. long; spikes oblong, dense. 

 Calyx canescent; leaflets in most species 3-7, if more than 9, more than 

 3 mm. long. 

 Spikes elongate and lax in fruit; bracts rather early deciduous; 

 leaves usually rather green. 

 Leaves short-pubescent above. 



Calyx villous-canescent; lobes equaling the tube; bracts 



ovate, acuminate, longer than the buds. 

 Calyx appressed silky-canescent; lobes shorter than the 

 tube. 

 Bracts ovate or ovate-lanceolate, abruptly or shortly 

 acuminate, shorter than the buds; pubescence of the 

 leaflets equally short on both sides. 

 Bracts lance-subulate, longer than the buds; pubescence 

 of the leaflets longer above. 

 Leaves long-silky on both sides. 

 Spikes dense and short even in fruit. 



Spikes (without the corollas) more than 1 cm. thick, acute at 

 first; corolla more than 1 cm. long. 

 Leaflets 7-13, appressed-silky. 



Leaflets 13-31, short-pubescent with spreading hairs. 

 Spikes (without the corollas) 7-8 mm. thick, obtuse; corolla less 

 than 1 cm. long; leaflets 5-9. 

 Leaves glabrous above, minutely puberulent beneath, 



green. 

 Leaves canescent on both sides. 



Spikes oblong, 2-3 cm. long, distinctly peduncled. 

 Spikes globose or short-oblong, 1-1.5 cm. long, subsessile 

 or very short-peduncled. 

 Pubescence spreading; leaflets less than 3 mm. long. 

 Leaves greenish, minutely canescent; calyx silky- 



villous with brown hairs. 

 Leaves and calyx villous-canescent with long whit- 

 ish hairs. 

 Pubescence appressed, silvery-silky; leaflets 3-8 mm. 

 long. 



77. P. attenuate 



78. P. uncifera. 



79. P. bicqtbr. 



80. P. muiabilis. 



81. P. capitala. 



82. P. quinqueflora. 



83. P. Lloydii. 



84. P. frutescens. 



85. P. laxa. 



86. P. hospes. 



87. P. aculifolia. 



88. P. cyanea. 



89. P. Hemsleyana. 



90. P. trochilina. 



91. P. minuti folia 



Petals purple. 



Petals pink, turning yellowish in fruit. 



XXIII. Psoraleoides 



'iculi folia . 



93. P. Seemanni. 



94. P. tuberculata. 



95. P. canescens. 



96. P. argyrea. 



96. P. arigyrea. 



97. P. Coniallii. 



98. P. tuberculina. 



99. P. fulvosericea. 



100. P. polycephala. 



101. P. decora. 



102. P. doryenoides. 



103. P. lomenlosa. 



104. P. psoraleoides. 



