Edwin Giesbers / Tuberous hawkbit (Leontodon tuberosus) bud, abstract, Menorca, Balearic Islands, Spain, Europe

Nick Garbutt / Tuberous thistle (Cirsium tuberosum), closed bud, close up. North Tyrol, Austria. June. Focus stacked image.

Alex Hyde / Dark Columbine (Aquilegia atrata) and Tuberous Thistle (Cirsium tuberosum) flowering in tradional hay meadow. Nordtirol, Austrian Alps. June.

MYN / Paul van Hoof / Tuberous bushcricket (Platycleis affinis) male, France, July, Meetyourneighbours.net project

MYN / Paul van Hoof / Tuberous bushcricket (Platycleis affinis) female, France, July, Meetyourneighbours.net project

LYNN M. STONE / Grass pink orchid (Calopogon tuberosa) East Haddam, Connecticut, USA, July.

LYNN M. STONE / Grass pink orchid (Calopogon tuberosa) East Haddam, Connecticut, USA, July.

LYNN M. STONE / Grass pink orchid (Calopogon tuberosa) East Haddam, Connecticut, USA, July.

MYN / Mac Stone / Grass pink (Calopogon tuberosus) in mountains of South Carolina, USA, May. Meetyourneighbours.net project

Wild Wonders of Europe / Widstrand / Tuberous thistle (Cirsium tuberosum) North Velebit National Park, Velebit Nature Park, Rewilding Europe area, Velebit mountains, Croatia

Alex Hyde / Mountain Clouded Yellow Butterfly (Colias phicomone) on Tuberous Thistle (Cirsium tuberosum), against white background. Nordtirol, Tirol, Austian Alps, Austria, August.

MYN / Paul Marcellini / Tuberous milkweed (Asclepias tuberosa) flowers, Florida, USA, April. meetyourneighbours.net project

LYNN M. STONE / Grass pink (Calopogon tuberosus tuberosus/ Calopogon pulchellus) in flower, East Haddam, Connecticut, USA, July

LYNN M. STONE / Grass pink (Calopogon tuberosus tuberosus/ Calopogon pulchellus) in flower, East Haddam, Connecticut, USA, July

LYNN M. STONE / Grass pink (Calopogon tuberosus tuberosus/ Calopogon pulchellus) flower with tiny Crab spider on stamens, East Haddam, Connecticut, USA, July

LYNN M. STONE / Grass pink (Calopogon tuberosus tuberosus/ Calopogon pulchellus) flower with tiny Crab spider on stamens, East Haddam, Connecticut, USA, July

Florian Möllers / Tuberous Pea (Lathyrus tuberosus) flowers, Berlin, Germany.

Edwin Giesbers / Tuberous hawkbit (Leontodon tuberosus) bud, abstract, Menorca, Balearic Islands, Spain, Europe

Nigel Cattlin / Autumn lady's tresses (Spiranthes spiralis), a small orchid with white flowers on Greenham Common, Berkshire, September

Nigel Cattlin / Autumn lady's tresses (Spiranthes spiralis), a small orchid with white flowers on Greenham Common, Berkshire, September

Paul Harcourt Davies / Tuberous comfrey (Symphytum tuberosum) in flower, Podere Montecucco, Orvieto, Umbria, Italy. March.

Paul Harcourt Davies / Tuberous comfrey (Symphytum tuberosum) in flower, Podere Montecucco, Orvieto, Umbria, Italy. March.

Nigel Cattlin / Pile of harvested cassava / manioc (Manihot esculenta) starchy tuberous roots used to extract tapioca, Pattaya, Thailand

Nigel Cattlin / Pignut (Conopodium majus) a small umbellifer flowering in chalk dwnland grassland, Berkshire, England, UK, May

Nigel Cattlin / Pignut (Conopodium majus) a small umbellifer flowering in chalk dwnland grassland, Berkshire, England, UK, May

Nigel Cattlin / Moschatel or five-faced bishop (Adoxa moschatellina) single flower of very small woodland plant, Berkshire, England, UK, April

Nigel Cattlin / Section through blue flower of garden ornamental Anemone coronaria with petals, sepals, calyx, central anthers, stamens, stigma and style

Nigel Cattlin / Blue flower of garden ornamental Anemone coronaria with petals, sepals, calyx, central anthers, stamens, stigma and style