RFEW9N6F–Involucre, vintage engraved illustration. Dictionary of words and things - Larive and Fleury - 1895.
RFKGP5EE–This image represents the internal structure of the Jupiter planet. It is a realistic 3d rendering
RF2GP8KRK–Wild beaked hazelnut involucre hangs from a branch.
RF2EP2831–Macro of a pair of Rough Cocklebur heads (Xanthium strumarium) as seen in winter. Raleigh, North Carolina.
RF2J3A2JK–Spider Eating Bee
RFH0GXR3–Close up of bottom of sunflower, showing details -hairs, stem,bracts, involucre, etc
RF2EKX1AE–Wild beaked hazelnut involucre hangs from a branch
RM2M0TD04–France, Indre et Loire, Ch?digny, village labeled remarkable garden, priest's garden, the presbytery garden brings together several varieties of perennials and annuals decorative medicinal aromatic shrubs and fruit trees, Involucre sage Bethellii
RMC5KN12–Pedals to involucre, Arid Machaeranthera, Death Valley, CA
RMF3J6P8–Hazel, Corylus avellana, nuts maturing on wild trees in summer, August, Berkshire
RMKM12WY–Large clump of Canadian dwarf cornel, Cornus canadensis, in full flower. Newfoundland.
RM2G03E98–Detail Showing Nectar Glands in the Cyathia or Bracteoles of Mediterranean Spurge, aka Albanian Spurge, Euphorbia characias
RM2H0CBME–Loose hazelnut, fruits of the hazelnut tree (Corylus avellana) stripped of their involucre, Lot-et-Garonne, France
RF2AHBE1N–Sow Thistle Involucres in Springtime
RF2G19300–Macro, Pale yellow petals, brown inner petals, beautiful Gazania Daisy Flower surrounded by wiry green involucre bracts, opening. Blue green
RMBE3E98–Hazelnuts of a Turkish Hazel tree (Corylus colurna) wrapped in their involucre. Noisettes de coudrier dans leur involucre.
RF2C78N2F–Euphorbia palustris, known populary as Marsh Spurge or Swamp Spurge is a plant from the family of Euphorbiaceae native to most of Europe and employed
RFB9MJ03–Coltsfoot Tussilago farfara or cough dispeller bloom emerging from a decaying beech leaves in the early spring
RMF0F6AP–Hazel nuts, Corylus avellana, maturing on the tree in summer, Berkshire, July
RMJF0PP1–Typha
RMAFGJ66–Back view of a large yellow Sunflower (Helianthus annus) showing involucral bracts against bright blue background
RMCW10E1–Close-up of Flowering Dogwood
RF2AHBE1K–Sow Thistle Involucres in Springtime
RF2G192YM–Macro, Pale yellow petals, brown inner petals, beautiful Gazania Daisy Flower surrounded by wiry green involucre bracts, opening. Blue purple green
RMBE3F8X–Hazelnuts of a Turkish Hazel tree (Corylus colurna) wrapped in its involucre. Noisettes de coudrier dans leur involucre.
RME9Y6CB–Wayside hazelnuts near Elterwater, Lake District, Cumbria, England
RFT5RYK0–Longitudinal section of almost mature attached to the Thallus, the long shape is antheridia and archegonia involucre, vintage line drawing or engravin
RMDP710W–Filbert (Corylus maxima) 'Purpurea' close-up of fruit nut enclosed with tubular involucre in garden Suffolk England September
RF2DBT8DX–Nuts from the Turkish hazel in the nutshell and a bristly involucre
RMH4N6B0–Endolepis Suckleyi, 1. Staminate flower, 2. Vertical section of the same, with the lobes of the calyx inflexed
RF2J3A2G6–Blooming Flower Head
RFAM669H–Calyces of Physalis peruviana, Cape gooseberry
RF2H7H1XK–Autumn aster flowers of Aster Cordifolius Little Carlow.
RF2B13K50–Back of sunflower isolated on black with the details of involucres arranged in a pattern
RM2KG1TFW–Mature green acorns and leaves on a common European oak (Quercus rubur) in autumn, Berkshire, September
RMHAT0ND–Typha
RMAG68H1–The underside of a single orange Gerbera flower (Gerbera jamesonii) showing involucral bracts against a plain blue background
RMCN678P–Close-up of Flowering Dogwood
RMR3E0F9–Alexander's Rhubarb, Rheum alexandrae in flower in cultivation. From Tibet.
RF2H7XXRB–Italian parsley or garden parsley, Petroselinum crispum, flower blossom.
RMH468B8–Water lily leaves, lampion flower,
RMDF28XF–studio green acorn in cup on stalk white background
RFFFEGT8–Nigella damascena, love-in-a-mist, ornamental herb with finely dissected leaves, finely dissected leaves and white flowers
RF2C3W3EB–Black-Eyed Susan (Rudbeckia hirta). Involucre Closeup
RFT61F7X–This is Habit and Detached Pinna with Involucre of Hymenophyllum Unilaterale called as filmy fern. The unilateral variety has dark green, rigid fronds
RF2GHY6YM–Corylus colurna Turkish hazel – nut surrounded contorted and fringed (medusa-like) husk, August, England, UK
RF2DBT8DG–Nuts from the Turkish hazel in the nutshell and a bristly involucre
RMBTFB8K–Spiny stems of Eryngium giganteum Silver Ghost spiny stems growing in garden border Surrey England UK.
RMCT3YYM–DANDELION
RFAM668R–Calyces of Physalis peruviana, Cape gooseberry
RFT5NHTW–A picture shows Resin Spurge Plant. It is superficially resembles a cactus and a shows involucre with enclosed flowers, b shows section of same. It is
RF2GHY6YW–Corylus colurna Turkish hazel – nut surrounded contorted and fringed (medusa-like) husk, August, England, UK
RF2DBT8E1–Nuts from the Turkish hazel in the nutshell and a bristly involucre
RMBTFB9H–Spiny stems of Eryngium giganteum Silver Ghost spiny stems growing in garden border Surrey England UK.
RMB5R5RJ–Protea eximia flower head close-up showing the outer red, hairy bracts against the blue sky
RFAM668W–Calyces of Physalis peruviana, Cape gooseberry