142 DE CANDOLLE'S SYSTEM. 



93. Stylidiacea. Glandular herbs. Calyx superior, 

 2-6-parted, permanent. Corolla irregular, imbricated. Sta- 

 mens 2, connate into an elastic slender column, with which 

 the style is consolidated. Ovary 2-celled. Capsule 2-valved, 

 many-seeded. Seeds albuminous. 



USES. Unknown. Eemarkable for the irritable elastic 

 column of stamens. 



TYPICAL GENERA. Stylidium, Leuwenhoekia. 



94. Lobeliacea. Herbaceous milky plants or shrubs. 

 Leaves alternate, without stipules. Flowers usually showy. 

 Calyx superior, 5-lobed, or entire. Corolla irregular, 5-lobed, 

 or 5-cleft. Stamens 5; anthers cohering. Stigma fringed. 

 Fruit capsular, 1 or more celled, many-seeded ; embryo in 

 the axis of albumen. 



USES. The species abound in a milky juice of extreme 

 acridity. Lobelia inflata is an emetic, but dangerous from 

 its violence. Hippobroma (or Isotoma) longiflora is fatally 

 hypercathartic. Many are plants of great beauty. 



TYPICAL GENERA. Lobelia, Clintonia, Siphocampylus. 



95. Gesneraceee. Herbaceous plants or under-shrubs. 

 Leaves opposite, rugose, fleshy, without stipules. Flowers 

 generally showy. Calyx half superior, valvate. Corolla tu- 

 bular, with an imbricate sestivation. Anthers cohering, with 

 a thick connective. Ovary 1 -celled, surrounded by glands, 

 with 2-lobed polyspermous placentae ; stigma capitate. Em- 

 bryo in the axis of albumen. 



USES. The succulent fruit is eatable. Some species yield 

 a dyeing substance. The species are, however, of no real 

 importance ; but they are generally gay flowers. 



TYPICAL GENERA. Gloxinia, Gesnera, Columnea. 



96. Campanulacea. Herbaceous plants or under-shrubs, 

 yielding a white milk. Leaves alternate, without stipules. 

 Flowers usually showy. Calyx superior, permanent. Co- 

 rolla usually 5-lobed, withering, regular, valvate. Stamens 

 alternate with the lobes of the corolla. Anthers distinct. 

 Style covered by collecting retractile hairs ; stigma naked. 

 Fruit dehiscing by apertures, or valves. Seeds numerous ; 

 embryo in the axis of albumen. 



