LABIAT& (Brown, Cooke and Skan). 227 
Distris. Genera about 170; species about 3400, in all warm and temperate 
regions, rare in arctic or alpine areas. 
Burmann (Fi. Cap. Prod. 16) enumerates the following species, which are 
mostly natives of Europe, the Mediterranean Region and the Orient, and of which 
he may have seen specimens of plants cultivated or introduced into South Africa. 
If introduced they have now apparently disappeared, as no South African material 
of any has been found in the Kew Herbarium: Origanum sipyleum, Linn., 
O. syriacum, Linn., O. majoranum [= 0. Majorana, Linn.], Thymus vulgaris, 
Linn., 7. serpillum [T. Serpyllum, Linn.], Satureia hortensis, Linn., Hyssopus 
officinalis, Linn., H. nepethoides [= Lophanthus nepetoides, Benth.], Thymbra 
spicata, Linn., Nepeta Cataria, Linn., Prunella hyssopifolia, Linn., Marrubiwm 
peregrinum, Linn., Lamium Orvala, Linn., Phlomis zeylanica, Linn. [= Leucas 
zeylanica, R. Br.], and Prasium majus, Linn. 
Rosmarinus officinalis, Linn., was collected by Cooper (no. 3110) at Mequatling 
in Basutoland, where it had been introduced by a missionary some time before 
1861. 
Tribe 1. OcrmomEa.—Calyx equally or unequally 3-5-toothed, with the upper 
tooth often much larger than the others and sometimes decurrent on the 
tube. Corolla 2-lipped, oblique or nearly regular ; upper lip flattish or not 
hooded. Stamens 4, absent or rudimentary in female flowers, in pairs and 
all directed upon the lower side or lip of the corolla or about equally 
spreading, never all ascending ; anthers perfectly or imperfectly 1-celled by 
the confluence of the cells at the apex. 
* Flowers hermaphrodite, all with a fertile ovary. 
+ Calyx enlarged, but not fleshy in fruit ; stamens all with fertile anthers. 
t Corolla either distinctly 2-lipped or 5-lobed ; stamens exserted from 
the corolla-tube. 
§ Calyx persistent in fruit, distinctly 3-5-toothed, 
|| Filaments all free, those of the upper pair bent like a knee or toothed 
or crested near the base ; upper calyx-tooth broadly ovate or sub- 
orbicular, decurrent on the tube. 
I. Becium.—Calyx 3-5-toothed, its tube with a broad oblique or truncate 
space at its mouth, ciliate and sometimes with small teeth along its 
margin, separating the upper tooth from the others. Corolla-tube 
equalling or exserted beyond the calyx-teeth. 
Il. Ocimum,—Calyx 5-toothed, with no broad space at the mouth of the 
tube separating the upper tooth from the lateral teeth. Corolla-tube 
not’ or scarcely longer than the calyx-tube. 
\| | Lower pair of filaments free or united, those of the upper pair some- 
times bearded or ciliate, but without a knee (except in Orthosiphon 
bracteosus) tooth or crest near the base. 
III. Orthosiphon.—Calyx unequally 5-toothed ; upper tooth larger than the 
others, suborbicular to elliptic-oblong, sometimes decurrent on the 
tube. Corolla-tube usually much exserted, but sometimes not 
exceeding the calyx-teeth, straight or nearly so. Stamens all free or 
the filaments of the lower pair variably united, ex-erted. 
IV. Synclostemon.—Calyx equally or subequally 5-toothed ; upper tooth not 
or scarcely larger than the others, not decurrent on the tube. 
Corolla-tube exserted, straight. Filaments of the lower pair of 
stamens united, all exserted. 
V. Plectranthus.—Calyx equally or unequally 5-toothed; upper tooth 
sometimes decurrent on the tube. Corolla-tube exserted, straight or 
decurved, often with a gibbosity or spur-like projection near the 
base ; lower lip compressed-boat-shaped. Filaments free. : 
Q 
