206. LABIATAE 



471 



inverted or curved ; micropyle turned downwards. Style inserted between the 

 lobes of the ovary, simple or 2-cleft, rarely (Cleonia) 4-cleft. Fruit separating 

 into 4 nutlets, rarely (Prasium) drupe-like. Seeds without albumen or with a 

 very scanty albumen. — Genera 70, species 1200. (Plate 134.) 



1. Nutlets with a large, lateral surface of attachment. Ovary slightly lobed, 



rarely to the middle ; style more or less terminal. Stamens ascending. 

 Corolla 2-lipped, with a 3-Iobed lower lip, or i-hpped. [Subfamily 



AJUGOIDEAE.] 2 



Nutlets with a small, basal or subbasal surface of attachment. Ovary 

 deeply lobed or divided ; style springing from between the lobes. . 5 



2. Nutlets smooth. Ovary deeply lobed ; style springing from between the 



lobes. Disc equal-sided. Stamens 2. Anthers i-celled. Calyx 2- 

 Hpped, ii-nerved. Corolla blue or white, 2-lipped ; tube glabrous 

 within ; lower lip with a strongly concave middle lobe. Shrubs. Leaves 

 linear. — Species i. North Africa and Cape Verde Islands. Yields an 

 aromatic oil which is also used medicinally, and serves as an ornamental 

 plant. " Rosemary." [Tribe ROSMARINEAE.] Rosmarinus L. 



Nutlets wrinkled. Ovary slightly lobed ; style terminal. Stamens 4. 

 Anthers 2-celled ; cells divergent or divaricate, sometimes confluent at 



the top. [Tribe AJUGEAE.] 3 



3 Calyx 2-lipped, with entire lips, inflated in fruit. Corolla red or violet, 

 2-lipped, with a short erect upper lip. Nutlets oblong, furnished with 

 a large shield-shaped wing on the back. Leaves entire. — Species 20. 

 Central Africa to Transvaal. Some are used medicinally. 



Tinnea Peyr. & Kotschy 



Calyx equally or somewhat unequally 5-toothed. Nutlets rounded on the 

 back, wingless 4 



4. Corolla i-lipped, all its lobes being placed below the stamens. — Species 35. 



North, East, and South Africa. Some species are used as ornamental or 



medicinal plants. " Germander." Teucrium L. 



Corolla 2-lipped, with a short upper lip. — Species 9. North Africa, north- 

 ern Central Africa, Madagascar, and South Africa. Some species are 

 used as ornamental or medicinal plants. " Bugle." . . Ajuga L. 



5. Nutlets drupe-like, with a fleshy mesocarp and a crustaceous endocarp. 



Calyx subequally 5-cleft. Corolla white or pink, 2-lipped ; upper lip 

 entire, lower 3-cleft ; tube included, hairy within. Stamens 4, ascending. 

 Style-branches subequal. Shrubs. False whorls two-flowered. — 

 Species i. North Africa. [Subfamily PRASIOIDEAE.] Prasium L. 

 Nutlets dry, but the fruiting calyx sometimes succulent, berry-like. . 6 



6. Seeds more or less horizontal ; radicle curved. Nutlets more or less 



depressed-globose. Calyx 2-lipped ; lips entire, one of them bearing on 

 its back a scale-like appendage and falling after flowering. Corolla 

 2-lipped ; lower lip usually entire ; tube exserted. Stamens 4, usually 

 ascending, the anticous with i -celled, the posticous with 2-celled anthers. 

 I Disc prolonged into a stalk-like gynobase. Style-branches unequal. — 



