Compositae

Having dealt with the leaf succulents in Chapter 9 and the stem succulents in Chapter 15, we are left with a number of dwarf, shrubby, intensely xerophytic caudiciform Othonnas. In some the swollen organ is almost or wholly below soil level; in others there are aerial branches. These are best thought of as connoisseur plants: not the easiest things to keep for long periods and all with rather over-familiar small yellow flower heads (red in O. cakilefolia). The most interesting are O. euphorbioides (21.12), with cactus-like clusters of often forking thorns, and O. herrei, a rarity with corallike tubercled branches (21.10). Othonnas come into leaf about November in Europe and are best put on a light, warm, top

Bottom (21.7): Sedum rosea in a rock crevice on the Isle olSkye. Scotland. Compare this with the robust garden-grown plant ol 10.1. It is one ol the most northerly succulents.

shelf and watered from then onwards untilafter the flowers have finished at the turn of the New Year. For the rest of the year only light sprayings are needed to prevent excessive drying out of the roots.

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