THE TASMANIAN FLORA. 



147 



about 1 line long. Corolla nearly 3 lines long ; the lobes as long as the 

 tube. 

 Introduced, but widely spread. Queensland, New South Wales, Victoria, 

 and South Australia. Fl. Nov.-Jan. 



Oeoee INlU.—LABIATu^. 



Flowers irregular. Calyx persistent, 5-toothed or 2-lipped. Corolla-tube 

 distinct ; lobes 4 or 5, usually arranged in 2 lips. Stamens 2 or 4, inserted in 

 the tube of the corolla. Ovary 4-lobed, with 1 erect ovule in each. Style simple, 

 and arising between the ovarian lobes and towards their base. Fruit 4 small 

 1-seeded nuts. Leaves opposite or whorled. 



Distribution world-wide. 



Flowers in close clusters in the axils of the ordinary 

 foliage-leaves. Herbs. 

 Corolla nearly equal, 4-lobed. 



Stamens 4 '... .. ... ... ... ... 1. Mentha. 



Stamens 2 ... ... ... ... ... ... 2. Lycopm. 



Corolla very irregular. 



Upper lobe distinct, erect. 



Calyx with 10 recurved teeth. Flower white ... 5. Marrubium. 

 Calyx with 5 erect teeth. Flower red-purple ... 6. Stachys. 

 Upper lobe hardly noticeable. Flower blue ... 11. Ajuga. 

 Flowers solitary in the axils of the ordinary foliage- 

 leaves. 



Herb 



Shrubs. 



Leaves opposite 

 Leaves in whoris of 4-6 

 Flowers in numerous axillary clusters, condensed at 



ends of branches, purple 3. Prunella. 



Flowers in numerous small dense racemes towards the 



ends of branches, white ... 9. Nepeta. 



Flowers in numerous small loose racemes towards the 



ends of branches, white. Tall herb. Stem square... 10. Teucrium. 

 Flowers iu small or large racemes, white and purple. 



Stem round. Shrubs 7. Prostanthera. 



4. Scutellaria. 



7. Prostanthera. 



8. Westrinffia. 



1. MENTHA. 

 Calyx 6-toothed. Coi-olla-tube short; lobes 4, the upper one often partly 

 divided, nearly equal. Stamens 4, equal. Style shortly bifid. Nuts smooth. 



Very common in northern temperate parts, but chiefly in Europe and Asia. 

 A few species spread to the tropics. Poorly represented in the Southern 

 Hemisphere. 



Flowers very numerous. Calyx-lobes very slender. 



Upper corolla-lobe deeply notched \. M. australis. 



Flowers tolerably numerous. Calyx-lobes narrow- 

 lanceolate. Upper corolla-lobe slightly notched . . 2. M.gracilu. 

 Flowers few, in few clusters. Calyx-lobes broadly 



lanceolate. Upper corolla-lobe often bifid ... 3. M. serpUllfolia.. 



1, M. AUSTRALIS, R. Br. Erect or ascending, 1-2 feet high, coarsely or finely 

 pubescent throughout. Leaves lanceolate to narrow-oblong, the larger ones 

 narrowed into a stalk, and with few distant obtuse teeth, the smaller ones sessile 



