Jan Hamrsky,Jan Hamrsky / Trumpet animalcules (Stentor polymorphus) with algal symbionts (Chlorella), Europe, controlled conditions

Paul Harcourt Davies,Paul Harcourt Davies / Appennine Trumpet Gentian (Gentiana dinarica) in flower, on roadside below Gran Sasso, Appennines, Abruzzo, Italy, May

John Abbott / Yellow / Pale pitcher plant / trumpet (Sarracenia alata) growing in bog, Louisiana, USA, April

Bernard Castelein / Buddhist monk playing the Lawah (long trumpet) during afternoon pudja, Tso Kar, Ladakh, India, June 2010

Wild Wonders of Europe / Zankl / Atlantic triton's trumpet (Charonia variegata) Malta, Mediteranean, May 2009

Albert Lleal / Trumpet Lily (Lilium longiflorum) SEM close-up view of pollen grains at 105x magnification

Nigel Cattlin / Daffodil (Narcissus cyclamineus 'Jetfire') cross section of flower trumpet with stamens, style and ovules inside ovary. March.

Nigel Cattlin / Daffodil (Narcissus cyclamineus 'Jetfire') cross section of flower trumpet with stamens, style and ovules inside ovary. March.

Ingo Arndt / Sword-billed hummingbird (Ensifera ensifera) male nectaring on Red floripontio (Brugmansia sanguinea) flower. Eastern Andean slope, Ecuador. October.

JIM CLARE / Black flowerpiercer (Diglossa humeralis) a nectar thief, piercing Angel's trumpet flower (Brugmansia sanguinea), Azuay, Andes, Ecuador.

JIM CLARE / Black flowerpiercer (Diglossa humeralis) a nectar thief, piercing Angel's trumpet flower (Brugmansia sanguinea) Azuay, Andes, Ecuador.

Nigel Cattlin / Yellow trumpet pitcherplant (Sarracenia flava) flower and insect trapping pitcher. Native to USA.