Hibiscus pentaspermus, v, 298.
Hoteia, characters of the genus, xlii, 39.
Houstonia minima, x, 262.
— ciliolata, x, 263.
— cœrulea, x, 263.
— longifolia, x, 263.
— purpurea, x, 263.
Hypericum Buckleii, xliv, 80.
— graveolens, xlv, 174.
— rosmarinifolium, xiv, 115.