Grevilleanum serratum, xi, 183.f
Gyropodium coccineum, ix, 56.f
Hedeoma hirta, x, 260.
Hedyotis purpurea, xlii, 27.
Helianthus Dowellianus, xliv, 82.
Herniaria americana, v, 291.
Heterotropa, characters of the genus, xlii, 18.
— arifolia, xlii, 19.
— asaroides, xlii, 19.
— virginica, xlii, 19.