322 XLVII. § MIMOSEH (OLIVER). 
Flowers in spiciform racemes. Legume indehiscent, valves with 
a longitudinal thick wing or keel. 
iss SER Rw a 6 cs! nos (Oe A ERATE 
Flowers spicate. Legume subterete, indehiscent, with septa be- 
na ee ee a ee gs SE Rr. 
Flowers spicate, lower neuter, upper perfect. Legume linear, 
compressed, twisted, indehiscent or dehiscing irregularly . . 8. DicHRosTACHYS. 
Flowers capitate, lower neuter, upper perfect. Legume oblong, 
compressed, 2-valved (Aquatic herb) 9. Neprunia. 
Trive 3. Bumimosee.— Calyx valvate or setaceous and rudimentary. Stamens 5 
or 10 (4-8); anthers eglandular ; pollen granular. 
Flowers capitate. Legume narrow-linear, straight, 2-valved ; 
valves obliquely depressed between the seeds - = . 4: . 10) Duemanreug: 
Flowers capitate (in Trop. African sp.). Valves of legume sepa- 
rating from the persistent narrower sutures . . . - . . . 11. Mimosa. 
Flowers capitate. Legume linear, straight, prickly; narrow 
valves separating from the persistent broader sutures . . . 12. ScHRANKIA. 
Flowers capitate. Legume broadly linear, flat, 2-valved; valves 
continuous . ge ae a . 13. Levcana. 
Tripe 4. Acacier.—Calyx valvate. Stamens indefinite, free or consolidated at 
base only with disk; pollen-grains cohering in masses. 
Wnlyscenus; = 7 ee ee 1A AON CTA 
Trisz 5. Ingevw.—Calyzx valvate. Stamens indefinite; filaments united more or 
less in a tube ; pollen-grains cohering in masses. 
Flowers capitate. Legume 2-valved, flat, straight ; valves coria- 
ceous, separating elastically from above . . . . . . . . 15. CannianpRa. } 
Flowers capitate (in African sp.). Legume flat, straight, oblong 
or broadly linear, indehiscent, or 2- valved; valves not elastic. 16. ALBizzia. 
Flowers capitate (in African sp.). Legume compressed, coria- 
ceous, circinate, constricted between the seeds . . . . . . 17. PiTHECOLOBIUM. 
1. PENTACLETHRA, Benth.; Benth. et Hook. f. 
Gen. Plant. i. 588. 
Flowers pentamerous, hermaphrodite (or dicecious). Calyx small 
campanulate, with 5 broadly rotundate imbricate lobes. Petals connate 
below, elliptical or oblong, valvate in wstivation. Stamens 5, alternate 
with the petals, much exserted; anthers with a minute apical gland 
and broad cellular disk on the connective of the inner face ; staminodia 
filiform 10 or 15, opposite to the petals, and with the stamens and 
inner crenate-margined disk adnate to the base of the united petals. 
Ovary subsessile; style equalling the ovary ; stigma obliquely capitel- 
late terminal; ovules indefinite, 6-8 or more. Legumes 2-valved, 
elongate, compressed, narrowed to the base, valves woody, elastically 
revolute when mature. Seeds compressed, exalbuminous ; testa coria- 
ceous or crustaceous, shining; cotyledons flat, fleshy; radicle sheathed 
by the base of the cotyledons—Unarmed trees. Leaves bipinnate; 
pinne ned eo in numerous pairs, leaflets multijugate shining. 
Stipules small, subulate, deciduous. Flowers numerous spicate ; spikes 
usually panicled towards the extremities. 
1. P. macrophylla, Benth. in Hook. Journ. Bot. 1842, 330. A tree of 
15-60 ft. or higher; extremities at first rusty-furfuraceous. Leaves 
ample 1-2 ft. or probably often longer, rachis minutely often sparsely 
