Crassula L.

1. Crassula L. View in CoL 1

Small, glabrous annuals, with opposite, connate, often reddish leaves. Flowers 4- or 3-merous. Petals free. Stamens equal in number to the petals.

The characteristic habitat of all European species is ground flooded in winter and dry in summer.

1 Leaves ovate, concave, crowded; flowers usually 3-merous

1. tillaea 1 Leaves broadly linear, flat, patent; flowers usually 4-merous

2 Flowers subsessile 2. aquatica 2 Pedicels exceeding the subtending leaves 3. vaillantii