126 NATURAL HISTORY OF rLANTS. 



Seeds cc ; embryo exalbuminous ; cotyledons thick ; radicle near the 

 hilum. — Trees; leaves entire or lobed; flowers polygamous in short 

 axillary cymes ; cymes sometimes disposed in compound racemes 

 {Tropical Africa). See p. 64. 



4 . Heritier a A it. — Flowers nearly of Sterculia, apetalous, 1 -sexual ; 

 perianth campanulate, 4-5-fid or dentate ; staminal column thin, 

 dilated at base into an orbicular disk, bearing at apex a few adnate 

 annulate anthers often 5—6 ; cells parallel. Stamens rudimentary or 

 in female flower. Carpels 4-6, subsessile, alternating with teeth of 

 perianth ; ovules 1 or 2 in pairs, ascending j micropyle extrorse 

 inferior obstructed ; styles short, recurved, swollen, stigmatiferous 

 at apex. Carpels ligneous or inwardly suberous at maturity, dor- 

 sally carinate-subulate indehiscent. Seed 1 ; embryo exalbuminous ; 

 cotyledons very thick ; radicle near hilum. — Lepidote trees ; leaves 

 alternate, entire, penninerved ; flowers in axillary, sometimes much 

 ramified cymiferous racemes {Asia, Oriental and Insular Africa and 

 Tropical Australia). See p. 04. 



5. Tetradia K. Br. — Flowers 1-sexual or polygamous, 3-4-me- 

 rous apetalous (of Sterculia). Stamens 4-cc , in simple annulate 

 adnate series at summit of column. Carpels 4, cc -ovulate ; styles 

 same in number, recurved stigmatiferous at apex. Fruit ? — A tree ; 

 leaves simple, subcordate, penninerved ; flowers axillary, solitary or 

 shortly racemose {Java). See p. 66. 



II. HELICTEREiE. 



6. Helicteres L. — Flowers hermaphrodite ; calyx tubular or ob- 

 conical, 5-fid at apex, sometimes unequal, valvate. Corolla (malva- 

 ceous) ; petals 5, equal or unequal, elongated into claws at base (all, or 

 2, 3) auriculate-appendiculate ; pignoration contorted. Stamens 

 inserted at summit of column, much elongated, exserted ; 

 antherless 5, dentiform, fertile either 5 alternate or 10 alternating 

 in pairs ; anthers stipitate or subsessile, extrorse, 2-celled ; cells 

 rimose, spreading or confluent. Gynseceum inserted at summit 

 of the anther-column, 5-lobed; ovaries go -ovulate ; styles 5, subulate, 



