TETRANDRJA. 



XXXI 



CLASS IV. TETRANDEIA. 4 Stamens equal in length. 

 ORDER I. MONOGYNIA. 1 Pistil. 



{ Corolla of one petal ; ovary in- 



1. DIPSACUS. | ferior; fruit 1 -seeded, crowned 



2. SCABIOSA. ^ by the calyx. Herbaceous plants 



3. KNAUTIA. with flowers in heads. TEAZEL 



[TRIBE. P. 314. 



Corolla of one petal ; ovary in_ 



4. RUBIA. ferior; fruit 2-lobed and 2-seeded 



5. GALIUM. Herbaceous plants, all the 



6. ASP^RULA. ' British species of which have 



7. SHERARDIA. whoiied leaves and small flowers. 



I MADDER TRIBE. P. 302. 

 r Corolla of one petal ; ovary 

 superior, 4-lobed ; fruit 4-seeded. 

 ] Herbaceous or shrubby plants 



8. MENTHA. 



9. THYMUS. 

 10. ORIGANUM. 



11. 



GENTIANA. 



CICENDIA. 



J-ltJl LKiUtJUUS Ui fcSillUUUJ |Jlfclilt 



with opposite aromatic leaves, and 

 more or less irregular flowers. 

 LABIATE TRIBE. P. 474. 



Corolla of one petal ; ovary 

 superior; capsule 1 -celled, 2-val- 

 ved, many-seeded. Bitter herbs 

 with opposite leaves, and blue or 

 yellow flowers. GENTIAN TRIBE. 

 IP. 412. 



Corolla 4-cleffc, the lobes reflexed; 

 stamens very long ; capsule 2-celled, bursting all round 

 transversely. Herbaceous plants with spiked flowers, 

 which are remarkable for their very long stamens. 

 PLANTAIN TRIBE. P. 524. 



14. CENTUNCULUS. Stamens short; capsule 1 -celled, 

 bursting all round transversely. A minute plant with 

 alternate leaves and inconspicuous axillary flowers. 

 PRIMROSE TRIBE. P. 510. 



15. EPIM&DIUM. Corolla of 4 petals with a scale at 



e 2 



13. PLANTAGO. 



