XCIir. YERBENACE^. 



Calyx deeply and unequally cleft. Corolla-lobes sub- 

 coriaceous, acute. Fruit 2-celled, 2-seeded . . 14. Camptlostachys. 



Suborder 3. Selagineae. Anthers 1-celled, adnate. Seeds pendulous, 

 with a superior radicle. — Leaves alternate. 



Corolla tubular, salver- or funnel-shaped. 



Stamens 2. Corolla slender. Calyx 5-toothed . 15. Agathelpis. 

 Stamens 2 fertile, included ; 2 sterile, in the throat. 



Corolla slender. Calyx 5-parted 16. Gosela. 



Stamens 4, more or less didynamous, all fertile. 

 Calyx 5- or 3-toothed or cleft. 



Carpel solitary, 1-seeded 17. MiciiODON. 



Carpels 2, subequal, cohering, each 1-seeded . 18. Selago. 

 Calyx 4-parted, sub-2-labiate. Carpels 2 . . 19. Walafrida. 

 Corolla split down the front, 1-labiate, 4-lobed. 

 Calyx cleft in front. 



Carpels 2, equal, each falsely 3-celled, the lateral 



cells empty 20. Polycenia. 



Carpels 2, very unequal, the back one abortive, 



the front 1-celled, 1-seeded 21. Hebensteeitia. 



Calyx 2-parted, the segments lateral. Carpels 2, 



nearly equal, 1-celled, 1-seeded 22. Dischisma. 



Suborder 1. Verbeneae. (G-en. 1-12.) 



Tribe 1. Euyerbexe^. 



1. SPIELMANNIA, Med. 



Calyx 5-parted, persistent. Corolla salver-shaped, the tube 

 swollen at base ; throat closed with hairs ; limb 5-fid, nearly 

 equal, spreading. Stamens 4, didynamous, included ; anther- 

 cells parallel. Ovary 2-celled ; ovules in each cell 2, erect ; 

 style short, persistent ; stigma hooked. Drupe succulent, 

 with a 2-celled nucleus. — DC. Frod. xi. ^. 525. 



Small, densely leafy shrubs. Leaves opposite or ternate, toothed. 

 Flowers solitary in the upper axils, sessile, white. — 2 species, one of them 

 common. 



2. PRIVA, Adans. 



Calyx tubular, 5-plaited, 5-toothed. Corolla nearly salver- 

 shaped ; tube cylindrical ; limb 5-fid, subequal, oblique. 

 Stamens 4, didynamous, included; anthers erect, sagittate. 

 Ovary 4-celled ; cells 1-ovuled ; style short ; stigma lateral, 

 mostly refiexed. Fruit enclosed in the enlarged membranous 

 calyx, hard and dry, separating at maturity into 2 normally 2- 

 celled pieces, dorsally tubercled or echinate, rarely smooth. — 

 DC. Frod. xi. p. 532. 



Weed-like herbs, chiefly tropical. Leaves opposite, petioled. coarsely ser- 

 rate. Racemes or spikes tei*minal and axillary, long and slender, with sub- 

 distant small flowers. — P. dentaia, Juss., occurs in the Eastern districts. 



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