Cactus, Golden Barrel Cactus, Echinocactus grusonii, Detail of spiky plant showing mass of needles.-

Cactus, Golden Barrel Cactus, Echinocactus grusonii, Aerial view of spiky plant showing mass of needles.-

Houseleek, Sempervivum, Detail of yellow coloured plant showing pattern.-

Larch, Larix decidua, Cones growing on branch of tree with spiky leaves.

Larch, Larix decidua, Cones growing on branch of tree with spiky leaves.

Larch, Larix decidua, Cone growing on branch of tree with spiky leaves.

Castor Oil plant, Ricinus communis, Close up of red coloured plant showing spiky detail.-

Castor Oil plant, Ricinus communis, Close up of red coloured plant showing spiky detail.-

Pincushion Euphorbia, Euphorbia enopla, Close up showing spiky texture.

Pincushion Euphorbia, Euphorbia enopla, Close up showing spiky texture.

White Globe Thistle, Echinops bannaticus 'Star Frost' Close up showing the spiky texture.

Echinacea, Purple Coneflower, Echinacea purpurea 'Rubinglow', Close up of flowers with mauve coloured petals and spiky texture.