112 CATALOGUE OF GREEN-HOUSE PLANTS. 



Heliotr opium, Peruvian Heliotrope. A species of soft 

 shrubby dwarf plants, which, when cultivated in a warm 

 situation, will yield abundance of delicate blue or purple 

 flowers from January to September. 



Helychryswn, Eternal Flower. There are several species 

 and varieties of this plant, producing soft downy foliage and 

 durable flowers, which, if cut before they are too far advanced, 

 will retain their splendour several years. 



Hibbertia. A species of climbing evergreen shrubs, which 

 yield fine yellow flowers in succession from May to Septem- 

 ber, under good culture. 



Hibiscus Chinensis. This half-hardy herbaceous plant is 

 worthy of a place in the green-house, as some species will 

 yield flowers six inches in diameter, if well attended to and 

 frequently watered ; the colours are crimson and blush. 



Hovea. This is a pea-flowering evergreen shrub, of which 

 there are several species, natives of New South Wales. The 

 Hovea celsii is a beautiful runner, yielding numerous blue 

 flowers. 



Hoya, Wax Plant. A fine climbing species, adapted to 

 the hot-house ; the leaves being succulent, green, and fleshy, 

 they require considerable heat and but little water. Some 

 produce pink flowers, and others white, in April and May. 



Hydrangea hortensis. The Hydrangea is a well-known 

 deciduous, half-hardy, soft-wooded shrub, producing large 

 pink balls of blossom, when cultivated in a shaded border, 

 from May to October; and by mixing iron dust from a 

 blacksmith's shop with the soil, or by growing the plants in 

 swamp earth, or mould from decayed leaves, the flowers 

 will become blue. 



Hypericum, St. John's Wort. A half-hardy little plant, 

 producing yellow flowers from April to June. There are 

 several species, some producing scarlet blossoms. 



lUicum, Aniseed Tree. A dwarf species of shrub, the 

 leaves of which, when rubbed, smell like anise ; some pro- 

 duce red, and others yellow flowers, in March and April. 



