250 scROPHULARiNE^. [Torenia. 



7. TORENIA, Linn. 



Calyx tubular, with prominent or winged angles, obliquely 3- or 5 -toothed, 

 or 2-lipped. Corolla with the upper lip erect or slightly spreading, emargi- 

 nate or 2-lobed, the lower lip larger, spreading, 3-lobed. Stamens 4, their 

 anthers cohering or closely contiguous in pairs ; upper stamens straight, the 

 lower pair arched under the upper lip, with a tooth-like or filiform appendage 

 near the base. Style filiform, with a dilated slightly 2-lobed stigma. Capsule 

 oblong, not longer than the calyx, opening in 2 entire valves parallel to the 

 thin flat dissepiment. — Herbs. Leaves opposite. Racemes terminal, short, or 

 reduced to clusters, or rarely to 1 or 2 flowers in the upper axils. Flowers 

 often large. 



A tropical or subtropical geuus, dispersed over the Old World, with one species occurring 

 also as a weed in tropical America. 



Glabrous or slightly pubescent, decumbent at the base. Flowers purple . . I. T. rubens. 

 Hairy and erect. Flowers yellow 2. T.flava. 



1. T. rubens, Bentli. hi BC. Prod. x. 410, var. grandifiom. A glabrous 

 or slightly pubescent annual, prostrate and rooting at the lower nodes ; the 

 flowering branches ascending to 6 in. or a ft., acutely 4-angled. Leaves on 

 short petioles, ovate, serrate, seldom above 1 in. long, rounded or slightly cor- 

 date at the base. Peduncles in the upper axils, 1 to 2 in. long, scarcely 

 forming a raceme. Calyx oblong, with 3 narrow wings slightly decurrent on 

 the peduncle, 8 or 9 lines long in the Hongkong variety. Corolla dark purple, 

 scarcely twice as long. Appendage of the longer filaments short. — T. concolor, 

 LindL Bot. Reg. 1846, t. 62. 



Common on Victoria Peak and in other parts of the island, Champion and others. Also 

 on the adjacent continent in Assam and in Formosa. The specimens originally described fi-om 

 Assam have much smaller flowers, but their size is variable in the Chinese ones. 



2. T.flava, Ham. ; BentJi. in DC. Prod. x. 411, var. grandiJlo7'a. An 

 erect branching hairy annual, 6 in. to 1 ft. high, the branches acutely angled. 

 Leaves stalked, ovate or oblong, serrate, 1 to near 2 in. long, cuneate at the 

 base. Elowers few, in terminal racemes ; the floral leaves small and bract-like, 

 except the lowest pair. Pedicels seldom \ in. long. Calyx 4 to 5 lines long, 

 5 -angled, acute at the base. CoroUa nearly twice as long in the Hongkong 

 specimens, much smaller in the Indian ones, pale yellow, with a purple spot 

 in the throat. Appendage of the longer filaments shortly subulate. 



Hongkong, Karland. Also in the Himalaya and in Mergui. 



8. VANDELLIA, Linn. 



Calyx either shortly tubular and 5-toothed, readily splitting after flowering, 

 or divided to the base into 5 segments. CoroUa with the- upper lip erect, 

 shortly 2-lobed, the lower larger, spreading, 3-lobed. Stamens 4, their anthers 

 cohering in pairs under the upper lip ; the upper stamens straight ; the lower 

 arched, with a tooth-like or filiform appendage near the base. Style filiform, 

 with a dilated often 2-lobed stigma. Capsule globular, oblong or linear, 

 opening in 2 entire valves, parallel to the thin flat dissepiment. — Herbs. 

 Leaves opposite. Plowers usually small, axillary or in terminal racemes often 

 contracted into umbels. 



