Gentianacecz Gentiana. 



305 



the preceding species in its broader foliage and inflated corollas 

 which are nearly closed at the mouth and destitute of a limb, 

 the primary lobes being absent and replaced by the fringed 

 and toothed appendages. A native of North America. 



G. septemfida has spotted white and blue flowers ; G. 

 gelida has campanulate purplish blue flowers ; G. punctdta has 

 them pale yellow with dark spots ; and G. Pneumondnthe var. 

 alba has large white flowers. 



Sabbdtia campestris is an elegant tender annual from Texas, 

 growing about a foot high and bearing clusters of small rose- 

 coloured flowers with a yellow centre ; S. stellaris and S. 

 chloroldes are hardy slender North American annuals with 

 rosy purple or white flowers. The corolla in this genus is 

 rotate, with from 5 to 12 divisions and an equal number of 

 stamens. 



Swertia perennis is a European perennial with quadrangular 

 smooth stems about a foot high, elliptical leaves, and dull violet 

 flowers. Corolla rotate, 5-lobed ; lobes fringed. 



ORDER LXXIL POLEMONIACE^B. 



Annual or perennial herbs of erect or rarely climbing habit, 

 rarely shrubs. Leaves opposite or alternate, simple or com- 

 pound. Inflorescence various. Flowers regular, pentamerous. 

 Calyx inferior, 5-lobed. Corolla slightly perigynous, campanulate, 

 funnel-shaped or salver-shaped. Stamens 5, inserted upon the 

 corolla-tube and alternating with its lobes. Fruit a 3-celled 

 3-valved few or many-seeded capsule, splitting loculicidally. 

 Seeds angular, winged or oval, with spongy testa and fleshy 

 or horny albumen. A small order confined to temperate and 

 cold regions, especially numerous in North-western America. 

 There are 17 genera and upwards of 100 species. 



1. PHLOX. 



Handsome herbs with simple entire opposite and alternate 

 leaves and cymose usually bracteate flowers. Calyx deeply 

 5-lobed, often. prismatic or angled. Corolla salver-shaped with 

 a long slender tube and wedge-shaped lobes twisted in bud. 

 Cells of the capsule 1-seeded. An exclusively North American 

 genus, contributing some of the showiest denizens of our gar- 





