roots

Pennywort Umbilicus rupestris showing round fleshy leaves and white flowers

Pepper saxifrage Silaum silaus with detail of individual flower

Perforated St Johns wort Hypericum perforatum showing flowers and leaves

Pheasants eye Adonis annua with pinnate leaves and red flowers

Phlox flowering head

Diagram of a pinnate leaf

Diagram of a Pollinia and within an orchid flower

Pondweed Potamogeton praelongus with seeds held erect out of the water and lanceolate leaves underwater

Opposite leaf diagram using nettle as example

Poppy Papaver rhoeas with bud, seed capsule, and leaf

Oxeye daisy Leucanthemum vulgare with flowers and bud

Potato Solanum tuberosum in flower with badly damaged leaves with Colorado beetle Leptinotarsa decemlineata on the leaf and also cut to white beetle. Egg, larva, and pupa

Oxlip Primula elatior

Potato Solanum tuberosum in flower with potato tubers amongst the roots

Diagram of a palmate leaf

Diagram of a panicle of flowers

Parsley Petroselinum crispum sprig and sprig with bud

Passion flower Passiflora with tendrils and leaves and bud

Mountain pansy Viola lutea with a dales landscape behind

Mountain pansy Viola lutea with several flowers and showing the different leaf shapes

Nigella and Scabious bouquet with Nigella seed pods

Node diagram

Clover root nodule diagram

Oak bark Quercus robur study