Heart shaped

Aristolochia clematitis (European birthwort)

Ballota nigra (black horehound)

Calystegia sepium (hedge bindweed)

Catalpa bignonioides (southern catalpa)

Chenopodiastrum hybridum (mapleleaf goosefoot)

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)