Nigel Cattlin / Crown imperial (Fritillaria imperialis) flower head, close up.

Chris Mattison / Arum (Arisaema ovale sadoense), Japan. Cultivated.

Chris Mattison / White-spathed jack in the pulpit (Arisaema candidissimum). Western China. Cultivated.

Chris Mattison / Lords and Ladies (Arum maculatum). Monmouthshire, Wales, UK. April.

Nigel Cattlin / A cotton flower (Gossypium hirsutum) from the fibre crop against a black background

Heather Angel / Titan arum (Amorphophallus titanum) at Kew Gardens, London, UK. Emits odour at night to attract carrion beetle and flesh fly pollinators. Native to Sumatra, Indonesia.

Heather Angel / Elephant yam (Amorphophallus paeoniifolius) spathe with band of male flowers above and female flowers below. In cultivation.

Heather Angel / Thorowax (Bupleurum rotundifolium) umbel with green bracts, backlit in studio.

Heather Angel / Elephant yam flower (Amorphophallus paeoniifolius) spadix surrounded by spathe. Cultivated in glasshouse.

Heather Angel / Voodoo lily (Amorphophallus bulbifer). Native to Asia.

Heather Angel / Voodoo lily (Amorphophallus bulbifer), female flowers fluroescing in UV light, male flowers above. Native to Yunnan, China.

Heather Angel / Masterwort (Astrantia sp) with pink bracts and tiny florets. Cultivated in garden, Surrey, England, UK. Controlled conditions.