246 scrophularine/E. [Scrophularinea. 



with several ovules in each cell. Style simple, with a 2-lobed, or rarely en- 

 tire stigma. Fruit a 2-eelled capsule, or very rarely an indehiscent berry. 

 Seeds with more or less of albumen. Embryo straight or rarely curved. — 

 Herbs, or rarely shrubs or small trees. Leaves usually opposite, or verticil- 

 late in the lower part of the plant, alternate higher up ; but sometimes all op- 

 posite or all alternate, without stipules. Flowers in terminal racemes or cymes, 

 or more rarely axillary. 



A large Order, widely dispersed over every part of the globe. 



Corolla spurred, 2-lipped 1. Linaria. 



Corolla rotate or minutely campanulate, nearly regular, 4-lobed. 



Stamens 4. Much-branched herb of 1 foot or more 11. Scoparia. 



Stamens 2. Herb of about 1 in. Flowers very minute . , . .12. MiCROCARPiEA. 

 Corolla with a distinct tube ; the limb 2-lipped or spreading. 

 Upper lobes of the corolla outside in the bud. 



Stamens all inserted within the tube of the corolla. 



Calyx 5-lobed to about the middle 2. Mazus. 



Sepals free to the base. 

 Stamens 4. 



Lower sepal much larger than the others. 



Anther-cells separate, one at least in the lower stamens 



sterile. Plants hairy 3. Pterostigma. 



Anther-cells contiguous, all fertile. Plant glabrous . 5. Herpestts. 



Sepals nearly equal 4. Limnophila. 



Stamens 2 6. Dopatrium. 



Lower stamens inserted at the base of the lower lip of the 

 corolla. 

 Lower stamens arched, bearing anthers under the upper lip. 



Calyx tubular, with prominent or winged angles .... 7. Torenia. 

 Calyx short, not angular, or divided to the base . . . .• 8. Vandellia. 

 Lower stamens club-shaped or 2-lobed, without anthers. 



Capsule globular or ovoid 9. Ilysanthes. 



Capsule linear 10. Bonnaya. 



Upper lobes of the corolla inside in the bud. 

 Calyx 5 -toothed. Anthers 1 -celled, obtuse. 



Corolla-tube straight 13. Buchnera. 



" Corolla-tube bent above the middle 14. Striga. 



Calyx oblique, split down the lower edge. Anthers 2-celled, 



with mucronate cells 15. Centranthera. 



1. LINARIA, Juss. 



Calyx deeply 5-cleffc. Corolla-tube broad, projecting into a spur at the 

 base; the limb 2-lipped, with a projecting palate, half-closing or completely 

 closing the mouth of the tube. Capsule ovoid or oblong, 2-celled, opening 

 either in 2 or 3 pores at the top, or by the fall of lateral valve-like lids. — 

 Herbs. Lower leaves usually opposite or whorled, the upper ones alternate. 

 "Flowers solitary in the axils of the leaves, or forming a terminal raceme or 

 spike. 



A considerable genus, spread chiefly over the Old World ; the greater number of species 

 about the Mediterranean region; one species only being American. 



1. L. elatine, Mill. ; Benth. in DC. Prod. x. 268. A hairy annual, with 

 slender branching prostrate stems, from a few inches to above a foot long. 

 Leaves shortly stalked, broadly ovate or ovate-lanceolate, angular or hastate 

 at the base, the lower ones scarcely above \ in. long, the upper ones smaller. 



