41 
all the other species they are sessile and adnate to the claw, whilst they are not perceptible 
in one species, S. leptocarpa. These appendages on the claw of the vexiilum in Sesbamia 
are probably closely connected with pollination, and no doubt, as in some other Legumi- 
nosae, their function *s to clasp and “ft open the free stamen in order to give insects ready 
access to the nectaries. 
We have considered it sufficient to restrict ourselves in regard to synonymy to those 
names to which have been applied to the African species. 
KEY TO THE AFRICAN SPECIES OF SESBANIA. 
I. Eusesbania.—Fruits not winged on the margins of the valves (in 8. sphaerocarpa fruits 
acutely keeled down the middle of the valves). 
Appendages of claw of vexillum free in their upper half or third: 
Vexillum yellow, plain or finely speckled on the back with 
dark spots: 
Stems and leaves rather densely villous pubescent : 
Flowers solitary or in pairs ; leaflets 5-10 pairs, stipules 
deciduous ; appendages to vexillum obtuse........ 1. S. Goetzei. 
Flowers several in each inflorescence; leaflets more 
then 10 pals; stipules persistent; appendages to 
Melk acutely acuMMMatbe.:.//5 00.261. oN. ales ats 2. S. speciosa. 
Stems and leaves glabrous or nearly so: ts 
Inflorescence branched; peduncles smooth; West 
Ere n speeies. mo 5 5 Lee Bue tn Go soe ales GESE 5 3. S. punctata. 
Inflorescence not branched : 
PeCOMMMe LES SKOOL EE <b He an hs 4. S. aegyptiaca. 
eauimelesmaculeater yo he. mw. testes lei EE 5. S. Dummert. 
Vexillum and tips of wings suffused throughout with dark 
papie chs ghee Sat be EE ER re od EE Ee gie 4. S. aegyptiaca 
var. bicolor. 
Appendages of vexillum wholly adnate to the claw or absent : 
Flowers very large, 5-10 cm. long: fruits about 30 cm. long ; 
leaflets 3-3-5 cm. long; cultivated species............... 6. S. grandiflora. 
Stipules foliaceous, broad, about 1 cm. long, more or less 
persistent : 
Peduncles smooth : 
Elders pale blue, not speckled..2. 2.0.5.4... 22.2: 7. S. caerulescens. 
Flowers yellow, vexillum speckled....:........+.... 8. S. cineresens. 
Reouneles: stronoly acwleate: ...... cael. DE EG on we 9. S. macrantha. 
Stipules more or less subulate, never foliaceous, and mostly 
soon falling off: 
Stems and leaves or leaves only rather densely pubescent : 
Calyx glabrous outside: 
bod OE OSE ON ia. EES Sin Ha Sees 10. S. pubescens. 
oe strome le WOIULOSE. se MS RS RE ANNE 11. S. Dalziela. 
Oly pubeseent outside. ii ok ols EE oth OER 12. S. Wildemanna. 
Stems and leaves glabrous or only slightly pubescent : 
Leaflets usually well over 1 cm. long; leaves nearly 
always as long or longer than the inflorescence : 
Valves of the fruit not keeled down the middle: 
Appendages absent from the claw of the vexil- 
Jum ; fruits torulose, much constricted between 
LLG, EER AM ee Oa Rea RA led SD mea | 13. S. leptocarpa. 
