MINT FAMILY. 243 



L. niyea, from Brazil, has the pleasant-scented flowers white and unchang- 

 ing; or, in var. MUTABILIS, changing to bluish. 



L. involucrata, of West Indies, has small obovate and prominently veiny 

 leaves, more or less downy beneath, and heads of lilac-purple flowers, involucrate 

 by the outer bracts. 



L. Sellowiana, of Southern Brazil, is low and spreading, with wedge- 

 oblong or ovate strongly veined leaves, long peduncles, and heads of reddish- 

 purple flowers lengthening somewhat with age. 



5. CALLICARPA. (From Greek for beautiful fruit.} Fl. early summer 

 C. Americana, FRENCH MULBERRY. Rich soil from Virginia S. : shrub 



3 - 8 high, with some scurfy down, especially on the lower face of the ovate- 

 oblong toothed leaves, and the clusters of bluish flowers ; fruits violet-blue and 

 showy. 



6. VITEX, CHASTE-TREE. (The ancient Latin name.) 



V. Agnus-castus, CHASTE-TREE, of Mediterranean region, has 5-7 lan- 

 ceolate entire leaflets whitened underneath, and bluish flowers in sessile clusters 

 forming an interrupted spike at the end of the branches ; hardy only S. 



V. incisa, of Northern China, barely hardy in gardens N., has 5-7 leaflets 

 lanceolate and cut-pinnatifid, and the clusters of bluish flowers peduncled. 



79. LABIATE, MINT FAMILY. 



Chiefly herbs, with aromatic herbage, square stems, opposite 

 simple leaves, more or less 2-lipped corolla (whence the name of 

 the order), either 4 didynamous or only 2 .^tamens, 2-lobed stigma, 

 and at once distinguished from all the related families by the deeply 

 4-parted ovary (as if 4 ovaries around the base of a common style), 

 ripening into as many seed-like nutlets, or akenes, each containing 

 a single seed. Embryo usually filling the seed. As in all these 

 families, there are 2 lobes belonging to the upper and 3 to the lower 

 lip of the corolla. Flowers from the axils of the leaves or bracts, 

 usually in cymose clusters, or running into terminal racemes or 

 spikes. 



1. Stamens 4, parallel and ascending, and projecting from a n^tch on the upper 

 side of the corolla. Nutlets reticulated and pitted, obliquely fixed by the inner 

 side, near the base. 



* Lobes of the corolla nearly equal and oblong, turned forward so that there seemt 



to be no upper lip, the Ji laments conspicuously projecting from the upper side. 



1. TEUCRIUM. Calyx 5-toothcd. Corolla with a deep cleft between the two 



upper lobes. Cells of the anther confluent. 



2. TRICHOSTEMA. Calyx 5-cleft in 2 lips, oblique. Filaments very long and 



slender, curved, coiled up in the bud. 



* * Lobes of the corolla equnl/i/ spreading : filaments slightly projecting from the 



notch between the 2 upper lobes. 



3. ISANTHUS. Calyx bell-shaped, equally 5-lobed, enlarging after flowering. 



Corolla only little longer than the calyx', bell-shaped, with 5 equal spreading 

 lobes. 



$ 2. Stamens 4, reclining on the lower lobe of the corolla, the outer or lower paif 

 longer : anthers 2-celled. Corolla usually turned down or declining. Nutlets 

 smooth or smoothish,fxed by their base, as in all the following divisions. 



4. OCIMUM. Calyx deflexed in fruit, 5-toothed, the upper tooth or lobe much 



broadest and sometimes wing-margined. Corolla short, the upper lip as it 

 were of 4 lobes, the lower of one entire flat or flattish declined lobe scarcely 

 longer than the upper. Filaments separate. 



