SPERM APHYTA 31 
Flowers not gynandrous. 
Ovules numerous. 
Leaves opposite ; flowers yellow or 
pink. Gentianaceae. 
Leaves alternate ; flowers white or 
mauve. Solanaceae. 
Ovules 1 — 4. 
Anthers dehiscing by pores. 
Ei 'icaceae. 
Anthers dehiscing by slits. 
Verbenaceae. 
Ovary 1-celled. 
Anthers dehiscing by pores. Ericaceae. 
Anthers dehiscing by slits. 
Styles single; calyx herbaceous; leaves 
opposite or whorled. Verbenaceae. 
Styles 5 ; calyx scarious ; leaves alternate. 
Plumbagineae. 
Perianth irregular (i.e. the members of each whorl dis- 
similar in shape, size or texture). 
Ovary 4-celled and 4-lobed ; style central. Labiatae. 
Ovary 1 — 2-celled ; style terminal. 
Fruit more or less drupaceous or nut-like, always in- 
dehiscent; leaves often heath-like. 
Anthers 2-celled. 
Perianth of 3 members; stamens 7. Polygaleae. 
Perianth of 4 — 5 members ; stamens 4. 
Flowers capitate ; cells of ovary 1 — 2- 
ovuled ; leaves usually opposite or 
whorled. Verbenaceae. 
Flowers solitary; cells of the ovary 4 — 6- 
ovuled; leaves alternate. 
Myoporineae. 
Anthers 1-celled. Selagineae. 
Fruit capsular or succulent; leaves usually not 
heath-like. 
Ovary 1-celled. 
A root parasite ; flowers mauve and yellow ; 
stamens 4. Orobanchaceae. 
