CHAPTER XVIII.
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. |