LE G ZJM I NOS AE 
449 
are sources of fibre; Haematoxylon, Genista, Indigofera, Acacia, &c. 
yield dyes; gums and resins are obtained from Acacia, Copaifera, 
Astragalus, Hymenaea, &c.; oil is expressed from the seeds of 
Arachis and Voandzeia; kino is obtained from Pterocarpus, and 
so on. See Chap. iv. and genera. 
Classification and chief genera (after Taubert): the L. are nearly 
related to Rosaceae (especially Chrysobalaneae) and Connaraceae. 
Benth. -Hooker place them in Rosales, Warming erects L. into a 
separate cohort, and considers each of the three chief sub-orders as an 
independent order. 
The primary division is : 
I. MIMOSOIDEAE. Firs, regular, corolla valvate. 
II. CAESALPINIOIDEAE . Zygomorphic; corolla-aestiva- 
tion imbricate ascending. 
III. PAPILIONATAE. Zygomorphic papilionaceous ; corolla- 
aestivation imbricate descending. 
These are again subdivided: the following key enables one to 
ascertain to which of the subdivisions any Leguminous plant belongs. 
I. MIMOSOIDEAE. 
A. Calyx valvate. 
a. Sta. more than xo. 
1. Ingeae ( sta. united): Inga, Calliandra. 
2. Acacieae (sta. free) : Acacia (only gen.). 
b. Sta. twice as many as petals. 
3. Eumunoseae (anther glandless) : Mimosa. 
4. Adenanthereae (anther in bud crowned by a gland; endo- 
sperm) : Neptunia, Prosopis. 
5. Piptadenieae (ditto, no endosperm) : Piptadenia. 
B. Calyx imbricate. 
6. Parkieae: Parkia. 
II. CAESALPINIOIDEAE. 
A. Calyx in bud quite undivided or tubular below. 
a. Leaves simple or one pair of leaflets. Sta. 10 or fewer. 
4. Bauhinieae : Bauhinia, Cercis. 
b. Leaves once pinnate (exceptions). Sta. 00 or rarely 9 — 13. 
9. Tounateae : Tounatea. 
c. Leaves bipinnate, or once pinnate; sta. 5. 
1. Dimorphandreae : Dimorphandra. 
B. Calyx in bud quite polysepalous or very nearly so. 
a. Two anterior petals modified to large glands, anthers opening 
by pores. 
6. Kramerieae : Krameria. 
b. Two anterior petals developed or not, but not glandular. 
a. Leaves some or all bipinnate. 
7. Eucaesalpinieae : Caesalpinia, Haematoxylon, Gleditschia. 
W. 
29 
