Which flowers are not suitable for long-term placement indoors

Flowers that cannot be kept indoors for long periods include:

Sun-loving flowers such as purslane (Portulaca grandiflora), carnation (Dianthus caryophyllus), gladiolus (Gladiolus), pansy (Viola tricolor), snake plant (Sansevieria), lotus (Nelumbo), four o'clock flower (Mirabilis jalapa), cactus, cactus ball, garden balsam (Impatiens balsamina), pomegranate (Punica granatum), kumquat (Fortunella), Chinese rose (Rosa chinensis), scarlet sage (Salvia splendens), iris (Iris), oleander (Nerium oleander), tree peony (Paeonia suffruticosa), snapdragon (Antirrhinum majus), orchid tree (Aglaia odorata), finger citron (Citrus medica var. sarcodactylis), Norfolk Island pine (Araucaria heterophylla), bitter orange (Citrus aurantium var. amara), pomegranate (Punica granatum), fig (Ficus carica), agave (Agave), rose (Rosa), crape myrtle (Lagerstroemia indica), phlox (Phlox drummondii), plum blossom (Prunus mume), pot marigold (Calendula officinalis) and others are all unsuitable for long-term indoor display.