272 ADDITIONAL SPECIES. 



DECANDRIA MONOGYNIA. 



129.* ARBUTUS. Corolla ovate, transparent at the base. Berry 

 of 5 cells. 



DIDYNAMIA GYMNOSPERMIA. 



169.* NEPETA. Lower lip numerously notched; throat bordered 

 and reflexed at each side. 



DIDYNAMIA ANGIOSPERMIA. 

 186.* LATHRJEA. Capsule of 1 cell. A gland under the germen. 



TETRAD YNAMIA SILIQUOSA. 



204.* HESPERIS. Pod inaccurately quadrangular. Stigma nearly 

 sessile, of 2 converging lobes. Calyx closed, with 2 protu- 

 berances at the base. Seeds not bordered. 



SYNGENESIA POLYG.-yEQUALIS. 



243.* BIDENS. Receptacle chaffy. Down rough with reversed 

 prickles. Calyx of many parallel channelled scales. Co- 

 rolla occasionally radiated. (Flowers discoid.) 



CRYPTOGAMIA MUSCI. 



23.* PTEROGONIUM. Fruit-stalks lateral ; peristome single, of 16 

 entire equidistant teeth ; calyptra dimidiate- 



No. II. 

 ADDITIONAL SPECIES. 



HIPPURIS. 



1. H. vulgaris, stem erect, simple, jointed ; leaves linear, about 

 8 in a whorl ; flowers small, axillary, sessile. Mare's Tail. 



