68 NATURAL HISTORY OF PLANTS. 



fascicled, or more rarely in short racemes {Tropical America). See 

 p. 46. 



26. Serianthes Benth. — Flowers 5-merons (parts in order of 

 magnitude), hermaphrodite or more rarely polygamous (of Ingd). 

 Calyx thick, widely campanulate, 5-lobed valvate. Petals adnate at 

 base to staminal tube, valvate. Stamens cc (very numerous), mona- 

 delphous. Grermen sessile oo-ovulate ; style thin ; apex scarcely 

 dilated, stigmatiferous. Legume oblong-ovate, straight or falcate, 

 piano-compressed or undulate, woody indehiscent, septate between 

 transverse compressed seeds. — Trees, unarmed ; leaves large 2-pin- 

 nate ; pinnae and leaflets unsymmetrically oo-jugate ; petiolar and 

 jugal glands rather prominent; stipules minute or obsolete; flowers 

 in subcorymbose racemes near extremities of branches {Tropical Asia, 

 South Sea Islands). See p. 46. 



27. Affonsea A. S. H. — Flowers hermaphrodite or polygamous 

 (of Serianthus). Carpels 2-6, free ; ovaries cc-ovulate. Legume 

 (when young) linear, thick, straight ; funicle of seed dilated into a 

 fleshy aril. — Trees ; leaves (of Inga) abruptly pinnate ; stipules per- 

 sistent, not spinescent ; flowers in loose or subracemose axillary 

 terminal spikes {Brazil). See p. 47. 



28. Archidendron F. Muell. — Flowers of Affonsea ; calyx entire, 

 evenly truncated; carpels 5-15, cc-ovulate. Legume indurated 

 coriaceous, bowed or variously twisted, without pulp, dehiscing late. 

 Seeds transverse exalbuminous ; funicle short. —A. tree ; leaves 2- 

 pinnate; pinnae 1- or paucijugate; flowers umbellate-capitate near 

 axils {Eastern subtropical Australia). See p. 47. 



