leaves

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

Pendulous sedge Carex pendulosa with ligule, stigmas, and fruit

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

Clover root nodule diagram

Oak bark Quercus robur study

Hooked Scorpion moss Scorpidium scorpioides tuft with detail of one fascicle and of a leaf

Oak Quercus robur pen and ink tree shape without leaves

Magellenic Bog moss Sphagnum magellicum a tuft of this crimson moss then further details of one leaf and of several fascicles or shoots

Oat grass Avena ludoviciana with individual spikelet

Pointed Spear moss Calliergonella cuspidata ruft, individual shoot, stem leaf and shoot tip leaf

Oil seed rape flower Brassica napus flowering spike in stippled pen and ink with watercolour top wash