308 XCYI. LABIAT.E. 



18. TEUCRIUM, Linn. 



Calyx tubular or bcU-sliapcd, rarely inflated, 5-tootlicd, the 

 teeth equal or the upper larger. Corolla-tube short, not 

 ringed within, the 4 upper lobes aubequal or unequal, either 

 oblong and bent down or very short, erect, the low^est very 

 large, often concave. Stamens 4, exserted betw^een the upper 

 lobes of corolla, the lower pair longer ; anther-cells confluent. 

 Style 2-fid. Nuts mostly roughly ridged, oblique at base. — 

 DC. Prod, xii.jo. 574. 



A large and dis])ersed genus of herbs and shrubs.— 3 Cape species, 

 Eastern and at Natah 



19. AJUGA, Linn. 



Calyx ovate or globose-bellshaped, subequal, 5-fid or 5- 

 toothed. Corolla-tube included or exserted, mostly annulate 

 within, straight or half-tw^isted ; limb 2-lipped, the upper lip 

 very short, slightly emarginate, lower elongate, spreading, 

 3-fid, the side-lobes oblong, the medial wdder, emarginate or 

 2-fid. Stamens 4, ascending, mostly exserted, the lower pair 

 longer; anthers with divaricating, at length confluent cells. 

 Style subequally 2-fid.— DC. Frod. xii. p. 595. 



Herbs of the Old World ; but 1 Cape species [A. OpJirydis^ Burch.), which 

 is very common in the Eastern district. Whorls axillary, or the upper 

 spiked. Flowers often blue. 



Order XCVII. NYCTAGINEjE. 



^lowers often involucrate or bracteate. Calyx corolloid, 

 tubular, bell-shaped or funnel-shaped, often constricted in the 

 middle, subentire or toothed, the low^er part becoming har- 

 dened, persistent, and enclosing the fruit, the upper mostly 

 falling ofi\ Stamens definite, hypogynous. Ovary 1-celled, 

 free ; ovules solitary, erect ; style filiform. Fruit enclosed 

 within the hardened base of the calyx. Embryo curved round 

 the albumen ; radicle inferior ; cotyledons leafy. — Leaves 

 mostly opposite. — Only 1 South African genus. 



1. BOERHAAVIA, Linn. 



Bracts mostly deciduous. Calyx jointed in the middle, 

 the lower part cylindrical or obconic, persistent ; the upper 

 funnel- or bell-shaped, coloured, deciduous, shortly 5-lobed. 

 Stamens 1, 2, 3, rarely 4, combined in a hypogynous ring, 

 mostly exserted ; anthers minute, roundish. Ovary minute ; 

 style as long as the stamens ; stigma obtuse. Fruit enclosed 



