* 



590 LABIATJE. 



HYSSOPUS OFFICINALIS, Linn., the Hyssop of the Old World, which has sparingly escaped from 

 gardens to roadsides at the East, has once been received from Plumas Co., California ; but prob- 

 ably it is not there naturalized. 



NEPETA CATARIA, Linn., the Catnip, and perhaps N. GI^:CHOMA, Benth., the Ground Ivy, 

 also GALEOPSIS TETRAHIT, Linn., the Hemp-Nettle, LEONURUS CARDIACA & L. SIBIRICUS, 

 Linn., Motherwort, and LAMIUM AMPLEXICAULE, Linn., &c., Dead-Nettie, weeds from the Old 

 World, are to be expected in California, but apparently have not yet found their way thither. 



I. Nutlets not reticulated, quite distinct and attached at the veiy base : corolla not more deeply 

 cleft down the upper side. 



TRIBE I. OCIMOIDEjE. Stamens declined towards or resting upon the lower lip of the 

 corolla, all four fertile. Corolla declined, the 4 somewhat equal lobes forming the upper 

 lip, and the fifth dissimilar one the lower. (Ocimum Basilicum, Linn., the Sweet Basil, 

 cultivated as a sweet herb, is the type of this tribe.) 



1. Hyptis. Calyx 5-toothed. Lower lobe of the corolla saccate, abruptly deflexed at the base. 



TRIBE II. SATUREIEjE. Stamens erect or ascending ; the posterior pair shorter or wanting : 

 anthers 2-celled, and the short cells never far separated, sometimes partly confluent but not 

 blended. Upper lip of the corolla never hooded : all the lobes flat or flattish. 



* Corolla (small and short) about equally 4-lobed and calyx 4 - 5-toothed : tube naked within. 



2. Mentha. Stamens 4, nearly equal, erect, straight and distant. 



3. Lycopus. Stamens 2 with anthers : the posterior pair sterile or wanting. 



* * Corolla with border bilabiate, and no hairy ring within the base of the tube. 

 +- Calyx about equally 5-toothed and 13-nerved: style beardless. 



4. Pycnanthemum. Flowers glomerate-capitate. Stamens 4, straight, distant and divergent : 



anther-cells parallel. Corolla-lips and lobes short. 



5. Monardella. Flowers glomerate-capitate. Stamens 4, straight, exserted : anther-cells at 



length divergent. Corolla-lobes narrow. 



6. Micromeria. Flowers solitary or loosely clustered in the axils. Stamens 4, curving and 



ascending, shorter than corolla. 



-i J- Calyx distinctly bilabiate : style beardless. 



7. Calamintha. Flowers scattered or loosely clustered. Stamens 4, the shorter pair sometimes 



sterile, conniving in pairs or ascending parallel. 



+- HH +- Calyx unequally and deeply 5-cleft, mostly 15-nerved: style bearded above. 



8. Pogogyne. Stamens 4, sometimes the upper pair sterile, ascending. 



* * * Corolla not manifestly bilabiate : a hairy ring at the base of the tube within. 



9. Sphacele. Calyx campanulate, deeply and nearly equally 5-toothed, membranaceous and 



enlarging in fruit, only 10-nerved, reticulated. Stamens 4, distant. Corolla with 

 5 roundish lobes, the lower longest. 



TRIBE III. MONARDE^E. Stamens only 2 fertile, the upper pair rudimentary or wanting : 

 anthers apparently or really of a single linear-oblong cell, or of 2 cells very widely sepa- 

 rated upon the two ends of a filament-like connective. 



10. Salvia. Connective longer than the filament itself, which it strides, a narrow anther-cell at 



its upper end, a smaller one or a long process at the lower. 



11. Audibertia. Connective much shorter than the filiform filament and continuous or barely 



articulated with its apex, or apparently none : anther 1-celled, no rudiment of the second 

 cell below. 



TRIBE IV. NEPETE^E. Stamens all four with good anthers, ascending or divergent ; the 

 posterior pair surpassing the anterior. Corolla distinctly bilabiate : calyx 15-nerved. 

 (NEPETA, the type of this tribe, would be expected to give two European weeds, the Cat- 

 nip and Ground Ivy ; but they have not yet been seen in collections.) 



12. Lophanthus. Calyx 15-nerved, 5-toothed. Stamens divergent, the pairs crossing : anther- 



cells parallel. 



TRIBE V. STACHYDEJE. Stamens all 4 with good anthers, ascending and parallel under 

 the concave or galeate upper lip of the corolla. Calyx 5 -10-nerved. Herbage much less 

 aromatic than in the preceding tribes, the glandular dots or oil-glands scanty. 



* Anthers of the longer pair of stamens with one cell abortive or wanting, as also is the upper 

 fork of the style : embryo curved ; the short radicle resting against one of the cotyledons : 



