472 



206. LABIATAE 



^i; ^ Species lo. Tropical and North Africa. Some are used as ornamental 

 or medicinal plants. " Skull-cap." [Subfamily SCUTELLARIOI- 

 DEAE.] Scutellaria L. 



Seeds erect ; radicle straight. Calyx persistent in the fruit. Disc not 

 prolonged into a stalk 7 



7. Disc divided into lobes placed opposite to the ovary-lobes. Calyx 13 — 15- 



nerved. Corolla blue or violet ; upper lip 2-cleft, lower 3-parted. 

 Stamens 4, included, more or less bent downwards. Anther-halves 

 confluent at the apex. Stigmas flattened. Nutlets with a dorsal- 

 subbasal point of attachment. — Species 15. North Africa and northern 

 Central Africa. Some of them yield an essential oil used in the prepara- 

 tion of perfumes, varnishes, and medicaments, or serve as ornamental 

 or medicinal plants, or for keeping off insects. " Lavender." [Sub- 

 family LAVANDULOIDEAE.] Lavandula L. 



Disc entire or divided into lobes alternating with the ovary-lobes. Nutlets 

 with a basal or a ventral-subbasal point of attachment 8 



8. Stamens descending upon the lower lip or the lower part of the corolla, or 



lying upon it. Anther-halves spreading, confluent at the apex. Corolla 

 distinctly, rarely obscurely 2-lipped ; lower lip nearly always entire. 



[Subfamily OCIMOIDEAE, tribe OCIMEAE.] 9 



Stamens ascending or projecting straight forwards. Corolla 2-lipped with a 

 3-lobed lower lip, or subequally 4-cleft. [Subfamily STACHYOIDEAE]. 



34 



9. Lower lip of the corolla entire, flat or slightly concave, somewhat exceeding 



the upper one ; upper lip 3 — 4-lobed or -cleft. Stamens 4. [Subtribe 



MOSCHOSMINAE.] 10 



Lower Hp of the corolla or its middle lobe strongly concave : saucer-, pouch-, 

 or boat-shaped 20 



10. Corolla included in the calyx, globose, with short, connivent lobes. Anthers 



sessile. Style included, entire. Calyx 2-lipped, the upper hp with 

 decurrent margins, much enlarged in the fruit. Shrubs. False whorls 

 6-flowered, spicately arranged. — Species 2. East Africa (SomaUland). 



Hyperaspis Briq. 

 Corolla not included and globose. Anthers on distinctly developed fila- 

 ments. II 



11. Corolla obscurely two-lipped, 4-lobed, very small. Anthers concealed within 



the corolla-tube. — Species i. Central and South-east Africa. (Under 



Ocimum L.) Endostemon N. E. Brown 



Corolla distinctly two-lipped, rarely obscurely two-lipped but 5-lobed. 

 Anthers projecting beyond the corolla-tube 12 



12. Calyx two-lipped ; margins of the upper lip decurrent along the tube. 



Inflorescence spike- or raceme-like 13 



Calyx two-lipped, but the margins of the upper lip not decurrent, or sub- 

 equally 5-toothed 16 



