Until the trees and shrubs producing yellow flowers are grouped the reader can hardly appreciate how great is the wealth of this material. The group is divided, as are the preceding groups in the chapter, into the early-flowering types and the late-flowering types.

a. Early-flowering sorts:

Benzoin aestivale Spice Bush

Berber is (in variety) Barberry

Cornus mas Cornelian Cherry

Corylopsis pauciflora Japanese Flowering Hazel

Cytisus scoparius Scotch Broom

Elaeagnus angustifolia Russian Olive

Elaeagnus longipes Japanese Oleaster

Forsythia (in variety) Golden Bell

Hamamelis japonica Japanese Witch Hazel

Jasminum nudiflorum Naked-flowered Jasmine

Lonicera fragrantissima Early Fragrant Honeysuckle

Ribes aureum

Flowering Currant Salix caprea

Goat Willow Salix discolor

Pussy Willow b. Late spring and summer-flowering sorts:

Azalea lutea

Flame-coloured Azalea

Caragana arborescens Siberian Pea Shrub

Colutea arborescens Bladder Senna

Genista tinctoria Dyer's Greenweed

Hypericum (in variety)

St. John's Wort Kerria japonica

Globe Flower

Koelreuteria paniculata Varnish Tree

Laburnum vulgare

Golden Chain Potenlilla fruticosa

Shrubby Cinquefoil

Sophora japonica Japanese Pagoda Tree

Rosa foetida {variety harisoni) Harrison's Yellow Rose

Rosa hugonis

Father Hugo's Rose