TEMPERATURES.
O enable growers to make a selection of species according to the accommodation that can be afforded for Cactuses, all that are described in this book are here classified in three groups: (1) Species which thrive in a cool-house or frame; (2) Species which can only be successfully grown in a warm house or stove; and (3) Species which are hardy in the more favoured portions of the United Kingdom.
COOL-HOUSE OR FRAME.
Temperature: Summer, that of the open air.
Temperature: Winter—day, 50 deg. to 60 deg.; night, 40 deg. to 45 deg.
| Cereus Berlandieri. | Cereus speciosissimus |
| Cereus Blankii. | Echinocactus brevihamatus |
| Cereus caespitosus. | Echinocactus centeterius. |
| Cereus cirrhiferus. | Echinocactus cinnabarinus. |
| Cereus ctenoides. | Echinocactus Cummingii. |
| Cereus enneacanthus. | Echinocactus echidne. |
| Cereus flagelliformis. | Echinocactus Emoryi. |
| Cereus Leeanus. | Echinocactus gibbosus. |
| Cereus leptacanthus. | Echinocactus hexaedrophorus. |
| Cereus multiplex. | Echinocactus Leeanus. |
| Cereus paucispinus. | Echinocactus Mackieanus. |
| Cereus pentalophus. | Echinocactus mamillarioides. |
| Cereus polyacanthus. | Echinocactus rhodophthalmus. |
| Cereus procumbens. | Echinocactus texensis. |
| Cereus reductus. | Echinocactus uncinatus. |
| Echinocactus viridescens. | Mamillaria semperviva. |
| Echinopsis, all the kinds. | Mamillaria stella-aurata. |
| Mamillaria atrata. | Mamillaria tuberculosa. |
| Mamillaria chlorantha. | Mamillaria uncinata. |
| Mamillaria dasyacantha. | Mamillaria viridis. |
| Mamillaria elegans. | Mamillaria Wildiana. |
| Mamillaria elephantidens. | Mamillaria Zucchariniana. |
| Mamillaria elongata. | Opuntia arborescens. |
| Mamillaria fissurata. | Opuntia aurantiaca. |
| Mamillaria floribunda. | Opuntia corrugata. |
| Mamillaria gracilis. | Opuntia cylindrica. |
| Mamillaria longimamma. | Opuntia Davisii. |
| Mamillaria macromeris. | Opuntia Engelmanni. |
| Mamillaria macrothele. | Opuntia Ficus-indica. |
| Mamillaria multiceps. | Opuntia hystricina. |
| Mamillaria phellosperma. | Opuntia macrorhiza |
| Mamillaria Schelhasii. | Opuntia occidentalis. |
| Mamillaria Schiedeana. |
WARM-HOUSE OR STOVE.
It is possible that some of those included in this division will eventually prove hardier than is at present supposed. Many of the species now classed as cool-house plants, and even some of those which are hardy, were formerly grown in the stove.
Temperature: Summer-day, 70 deg. to 90 deg.; night, 65 deg. to 75 deg.
Temperature: Winter-day, 60 deg. to 70 deg.; night, 55 deg. to 60 deg.
| Cereus caerulescens. | Echinocactus cornigerus. |
| Cereus extensus. | Echinocactus corynodes. |
| Cereus fulgidus. | Echinocactus cylindraceus. |
| Cereus giganteus. | Echinocactus Haynii. |
| Cereus grandiflorus. | Echinocactus horizonthalonis. |
| Cereus Lemairii. | Echinocactus Le Contei. |
| Cereus Macdonaldiae. | Echinocactus longihamatus. |
| Cereus Mallisoni. | Echinocactus mamillosus. |
| Cereus Napoleonis. | Echinocactus multiflorus. |
| Cereus nycticalus. | Echinocactus myriostigma. |
| Cereus peruvianus. | Echinocactus obvallatus. |
| Cereus pleiogonus. | Echinocactus Ottonis. |
| Cereus repandus. | Echinocactus pectiniferus. |
| Cereus serpentinus. | Echinocactus polycephalus. |
| Cereus Royeni. | Echinocactus Pottsii. |
| Cereus triangularis. | Echinocactus scopa. |
| Cereus variabilis. | Echinocactus sinuatus. |
| Echinocactus concinnus. | Echinocactus tenuispinus. |
| Echinocactus coptonogonus. | Echinocactus turbiniformis. |
| Echinocactus Visnaga. | Opuntia, all not included under "Cool-house or Frame." |
| Echinocactus Williamsii. | Pelecyphora. |
| Echinocactus Wislizeni. | Pereskia, all the kinds. |
| Epiphyllum, all the kinds. | Phyllocactus, all the kinds. |
| Leuchtenbergia. | Pilocereus, all the kinds. |
| Mamillaria, all not mentioned under " Cool-house Or Frame." | Rhipsalis, all the kinds. |
| Melocactus, all the kinds. |