ON PLANTS PRODUCING DOUBLE FLOWERS. 
Solanee. 
Datura cornigera, Hook.  Peruvia. 
D: fastuosa, Linn. Amer. austr., Aigyptus. 
D. arborea, Linn. Amer. austr. 
D. chlorantha, Hook. Patria? 
D. humilis, Desf. Patria? 
Petunia nyctaginiflora, Juss. . Laplata. 
P. violacea, Hook. Bonaria. 
Solanum Dulcamara, Linn. Europ. 
Gentianee. 
Gentiana Amarella, Zinn. Europ. 
Orobanchee. 
Orobanche, sp. (Dr. Masters !) 
Scrophularinee. 
Mimulus luteus, Linn. Chile. 
Antirrhinum majus, Zinn, Europ. med. et austr. 
Digitalis purpurea, Linn, Europa. 
Linaria vulgaris, Mill. Europ., Amer. bor. 
Veronica, sp. (Dr. Masters !) 
Calceolaria, sp. (Dr. Masters !) 
Gesneracee. 
Achimenes longiflora, De Cand. . Mexico. 
Gloxinia, sp. (Dr. Masters !) 
Verbenacee. 
Clerodendron fragrans, Willd. Japonia. 
Nyctaginee. 
Mirabilis Jalapa, Linn. Amer. trop. 
Laurinee. 
Laurus nobilis, Zinn. Europ. austr. 
L. Sassafras, Linn. Amer. sept. 
lridee. . 
Gladiolus tristis, Zinn. Pr. Bon. Sp. 
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