Hacquetia Epipactis, 85.
Harebell, showy, 53.
Harpalium rigidum, 121.
Heath, winter, 92.
Hedera conglomerata, 122.
Helianthus multiflorus, 123.
m. flore-pleno, 124.
orygalis, 124.
rigidus, 121.
Heliotrope, winter, 198.
Hellebore, abchasian, 126.
ancient, 127.
black, 132, 188.
Boccon's, 128.
bushy, 131.
Colchican, 129.
coppery, 130.
eastern, 137.
officinalis, 137.
Olympian, 136.
purplish, 139.
spotted, 132.
stinking, 131.
sweet-scented, 136.
Helleborus abchasicus, 126.
a. purpureus, 126.
antiquorum, 127.
Bocconi, 128.
B. angustifolia, 129.
colchicus, 129.
cupreus, 130.
dumetorum, 131.
foetidus, 131.
guttatus, 132.
hyemalis, 91.
multifidus, 128.
niger, 132, 138.
n. angustifolius, 134
n. maximus, 134.
odorus, 136.
olympicus, 136.
orientalis, 137.
o. elegans, 138.
purpurascens, 139.
Hepatica, anemone, 140.
angulosa, 139.
triloba, 140.
t. splendens, 141.
Herb, Christ's, 132.
Hesperis matronalis flore-pleno, 141.
Heuchera, 142, 288.
americana, 143.
currant-leaved, 145.
Heuchera cylindrica, 143.
cylindrical-spiked, 143.
Drummondi, 144.
glabra, 141.
lucida, 144.
metallica, 145.
micrantha, 145.
purpurea, 145.
ribifolia, 145.
Richardsoni, 146.
shining-leaved, 144.
small-flowered, 145.
smooth, 144.
Hill tulip, 18.
Houseleek, Lagger's, 270.
Houstonia albiflora, 146.
coerulea, 146.
Hutchinsia alpina, 147.
Hyacinth, 267.
grape, 179.
Hydrangea, large-flowered, 148.
paniculata grandiflora, 148.
Hypericum calycinum, 150.