Nicotiana affinis: half-hardy, 2 to 3 ft., white.
Nicotiana Sanderae: half-hardy, 2 to 3 ft., white, crimson, scarlet, &c.
Nigella hispanica: hardy, 1½ ft., pale blue, white or dark purple.
Oenothera odorata: hardy, 2 to 3 ft., yellow; fragrant.
Omphalodes linifolia (Venus’s Navelwort): hardy, 1 ft., white.
Papaver Rhoeas flore-pleno: hardy, 2 ft., scarlet and other colours; showy.
Papaver somniferum flore-pleno: hardy, 3 ft., white, lilac, rose, &c.; petals sometimes fringed.
Petunia violacea hybrida: half-hardy, 1½ ft., various colours; sow in heat.
Pharbitis hispida: hardy, 6 ft., various; the many-coloured twining Convolvulus major.