318 PRACTICAL BOTANY, 



12. IlysantheSi^sd. /Species :Ili/sant/iesgratioloideSf Benth, 



13. Micratithemum^ Rich. 



Mkranthemum Micrantha^ Rich. (Hemianthus mi- 

 cranthemoides^ Nutt.) 



14. Limosella, L. Mud wort. Species: 



Ziimosella aquatica^ L. Var. Tenuifolia. 



15. jS(/nthi/ris, Beiith. /Species : 



fSr/nthyris Houghtoniana, Benth. 



16. Veronica^ L. Speedwell. Species 12. 



17. JBitchnera, L. Blue-hearts. Sp>ecies: 



Biiclinera Americana^ L. 



18. /Se^/mmor, Pursh. Mullein-Foxglove. Sjoecies : 



Seymeria macrophylla^ Nutt. 



19. Gerard ia,L. Sjyecies Q. 



20. DasystomGy Raf. Yellow Foxglove. Species 6. 



21. Castilleja^ Mutis. Painted-cujD. Species 3. 



22. Schwalbea, Gron. Chaff -seed. Sjyecies : 



Schiccdbea Americana, L. 



23. Euphrasia, Tourn. Eye-bright. Species : 



JEup/Jirasia officinalis, L. 



24. Rhinanthus, L. Yellow-Rattle. Species : 



liliinanthus Crista-galli, L. 



25. Pedicidaris, Tourn. Louse wort. Species 2. 



26. Melampyrmn, Tourn. Cow-w^heat. Species : 



Melampyrunx Americaniwi, Mx. 

 (Melamp>yrum pratense. Var. Americaniim, Benth.) 



27. Gelsemiw7i, J uss. Yellow Jessamine. Species: 



Gelsemiwn sempervirens, Ait. 



ORDER LXXV. * 



acanthace^, or acanthads. 

 Genera : 



1. Dianthera, Gron. "Water-Willow. Species : 



Dianthera Americana, L. 

 {Rhytiglossa peduncidosa, Nees.) 



2. Dipteracanthus, Nees. Species 2. 



