696 



BOTANY 



PART II 



upper lip is deeply divided. 



Nepeta and Glechoma differ from the majority of 

 the order, in having the posterior stamens longer 

 than those of the anterior pair. Salvia, Sage, 

 has the two stamens that remain peculiarly con- 

 structed in relation to pollination (Fig. 754, cf. Fig. 

 528). Many Labiatae are of value on account of 

 their aromatic properties. They are especially 

 abundant in the xerophytic formation of shrubby 

 plants in the Mediterranean region to which the 

 name Maquis is given. 



OFFICIAL. -Rosmarinus officinalis yields OLEUM 

 ROSMARINI. Lavandula vera (Fig. 753) (Mediter- 

 ranean region), OLEUM LAVANDULAE. Mentha 

 piperita, OLEUM MENTHAE PIPEUITAE. M. viridis, 

 OLEUM MENTHAE VIRIDIS. M. arvensis and M. 

 piperita yield MENTHOL. Thymus vulgaris and 

 Monarda punctata yield THYMOL. 



Order 6. Personatae 



The Personatae are of common origin 

 with the Tubiflorae. The flowers are actino- 

 morphic or zygomorphic. There are, how- 

 ever, no false septa in the ovary, and the 

 number of ovules is usually a larger one. 



Family 1. Solanaeeae. Herbs or small 

 woody plants, with nearly always actino- 

 morphic flowers. Petals plaited. Ovary 

 bilocular, septum inclined obliquely to the 

 median plane. Ovules numerous, on a thick 

 placenta (Fig. 755). Fruit, a capsule or a 

 berry. Seeds with 

 endosperm; embryo 

 usually curved. 

 Anatomically the 

 order is character- 

 ised by possessing 

 bicollateral vascular 

 bundles. 



Many species of 

 Solatium occur as 

 weeds. Flowers actino- 

 morphic ; fruit a berry. 

 S. nigrum, Night- 

 shade. S. dulcamara, 

 Bitter-sweet (Fig. 756), 

 is a shrubby plant, 

 climbing by means of 

 its stems and petioles, and especially common in thickets by the banks of 



Fio. 754. Salvia officinal is. Flowering shoot ( nat. size). Tubular 

 corolla slit open to display the stamens (enlarged). 



