Heart shaped Aristolochia clematitis (European birthwort) Ballota nigra (black horehound) Brunnera macrophylla (Siberian bugloss) Calystegia sepium (hedge bindweed) Catalpa bignonioides (southern catalpa) Chenopodiastrum hybridum (mapleleaf goosefoot) Clematis vitalba (old man’s beard) Cyclamen coum (ivy-leaved cyclamen) Fallopia convolvulus (black bindweed) Ficaria verna (lesser celandine) Lamium galeobdolon (yellow archangel) Lamium purpureum (red dead-nettle) Phlomis russeliana (turkish sage) Veronica persica (birdeye speedwell) Viola odorata (sweet violet)