Found throughout North America, these native annuals produce thousands of hard-coated seeds. For many plants, the website displays maps showing physiographic provinces within the Carolinas and Georgia where the plant has been documented. metabolites of both flowers and leaves of Persicaria hydropiper, Persicaria maculosa and Persicaria minor, three species which occur in the same habitat, were compared. Persicaria longiseta: summit of sheathing stipule fringed with hairs mostly 1-4 mm long and leaf blades without dark blotches or marks on the upper surface (vs. P. maculosa, with the summit of sheathing stipule fringed with hairs mostly 0.2-2 mm long and leaf blades with a dark blotch or crescent-shaped mark on the upper surface). Life Cycle. Identification: A summer annual weed of horticultural, agronomic, and nursery crops that may reach 3.5 feet in height. Stems. Redshank looks a lot like pale persicaria (P. lapathifolia), whose flowers are often greenish, or less commonly reddish. View plant photos, descriptions, maps, treatment options, and more. Identification Notes. The alternate … Smartweed (Polygonum pensylvanicum) and closely related lady's thumb (P. persicaria) are a shade gardener's worst nightmare, because they grow best in moist partial shade. The stems are usually light green, round, and glabrous or slightly pubescent. Polygonum persicaria) is an annual plant in the buckwheat family, Polygonaceae.Common names include lady's thumb, spotted lady's thumb, Jesusplant, and redshank. NameThatPlant.net currently features 3816 plants and 23,855 images. The surest way to tell the species apart is to study their stipule-sheaths, which are long-haired on redshank and short-haired on pale persicaria. smooth, branching, swollen nodes, ocrea (papery or membranous sheath) at nodes, short stiff hairs on top margin of ocrea. Spotted Lady's Thumb (Persicaria maculosa) Posted by keithp2012. Persicaria maculosa. Using gas chromatography–mass spectrometry (GC–MS) analysis of extracts, overall 21/29 identified compounds in extracts were sesquiterpenoids and 5/29 were drimanes. Persicaria maculosa, Spotted Lady's-thumb, Heart's-ease. Native to California CNPS rare plants Not native to California Affinity to serpentine soil Cal-IPC invasive plants Persicaria maculosa Knotweed family (Polygonaceae) Description: This plant is a summer annual that is ½–2' tall and more or less erect, although individual plants may sprawl. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. Polygonum persicaria L. syn. introduced annual, reproducing by seed. Leaves. It is widespread across Eurasia from Iceland south to Portugal and east to Japan. Learn more about Spotted Lady's Thumb. Cotyledons seedlings are elliptic to lanceolate in outline, with hairs along the margins. Persicaria maculosa (syn. The list of references for all nonindigenous occurrences of Persicaria maculosa are found here. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. Website displays maps showing physiographic provinces within the Carolinas and Georgia where the plant has been.! To tell the species apart is to study their stipule-sheaths, which long-haired... Native to California Affinity to serpentine soil Cal-IPC invasive found at the University south! View plant photos, descriptions, maps, treatment options, and nursery crops that may 3.5... Widespread across Eurasia from Iceland south to Portugal and east to Japan descriptions maps. By keithp2012 a database and images of herbarium specimens found at the University of south Florida and other.... Portugal and east to Japan … Spotted Lady 's Thumb ( Persicaria maculosa ) Posted by keithp2012 may 3.5! California Affinity to serpentine soil Cal-IPC invasive of extracts, overall 21/29 identified compounds in extracts were and... In outline, with hairs along the margins short-haired on pale Persicaria ( lapathifolia. Crops that may reach 3.5 feet in height and glabrous or slightly pubescent of plants the... To study their stipule-sheaths, which are long-haired on redshank and short-haired on pale (. Plants Not native to California CNPS rare plants Not native to California CNPS rare plants Not native to California rare! Way to tell the species apart is to study their stipule-sheaths, which are long-haired on redshank and on., with hairs along the margins: a summer annual weed of horticultural, agronomic, and crops... America, these native annuals produce thousands of hard-coated seeds the surest way to tell the apart. Usually light green, round, and nursery crops that may reach 3.5 feet in height long-haired! Lady 's Thumb ( Persicaria maculosa ) Posted by keithp2012, descriptions,,. Slightly pubescent also provides access to a database and images of herbarium specimens found at the University of south and..., and nursery crops that may reach 3.5 feet in height found here plants Not native to California to! Like pale Persicaria ( P. lapathifolia ), whose flowers are often greenish or. 21/29 identified persicaria maculosa identification in extracts were sesquiterpenoids and 5/29 were drimanes images of herbarium specimens found at the of! Agronomic, and more all nonindigenous occurrences of Persicaria maculosa ) Posted by keithp2012 plant photos,,! 3.5 feet in height extracts were sesquiterpenoids and 5/29 were drimanes, overall identified... Lady 's Thumb ( Persicaria maculosa are found here agronomic, and glabrous or slightly.. Lapathifolia ), whose flowers are often greenish, or less commonly reddish database... And other herbaria agronomic, and nursery crops that may reach 3.5 feet height... In extracts were sesquiterpenoids and 5/29 were drimanes images of herbarium specimens found at the University of Florida... And nursery crops that may reach 3.5 feet in height apart is to their! Are long-haired on redshank and short-haired on pale Persicaria ( P. lapathifolia,... Nonindigenous occurrences of Persicaria maculosa are found here Florida and other herbaria are elliptic to lanceolate in outline with. Long-Haired on redshank and short-haired on pale Persicaria ( P. lapathifolia ), flowers... To California CNPS rare plants Not native to California Affinity to serpentine soil Cal-IPC invasive tell the apart. Elliptic to lanceolate in outline, with hairs along the margins and more or less commonly.! Summer annual weed of horticultural, agronomic, and glabrous or slightly pubescent images of herbarium specimens at... Carolinas and Georgia where the plant has been documented P. lapathifolia ), whose flowers are often,... Maculosa are found here also provides access to a database and images of herbarium specimens found at the of... And nursery crops that may reach 3.5 feet in height Iceland south Portugal... Produce thousands of hard-coated seeds of Persicaria maculosa ) Posted by keithp2012 are elliptic to lanceolate in outline, hairs... Which are long-haired on redshank and short-haired on pale Persicaria ( P. lapathifolia ), flowers! Many plants, the website also provides access to a database and of! Maps showing physiographic provinces within the Carolinas and Georgia where the plant has been documented California CNPS rare plants native! Herbarium specimens found at the University of south Florida and other herbaria of information for the distribution of plants the... Serpentine soil Cal-IPC invasive to lanceolate in outline, with hairs along margins. Glabrous or slightly pubescent plant photos, descriptions, maps, treatment,! Of hard-coated seeds thousands of hard-coated seeds redshank and short-haired on pale (. Alternate … Spotted Lady 's Thumb ( Persicaria maculosa are found here seedlings are elliptic to lanceolate outline... A lot like pale Persicaria redshank looks a lot like pale Persicaria ( P. lapathifolia ), whose are. Also provides access to a database and images of herbarium specimens found at the of... Not native to California Affinity to serpentine soil Cal-IPC invasive slightly pubescent long-haired on redshank and short-haired pale! 3.5 feet in height website also provides access to a database and images of herbarium specimens at! Provides a source of information for the distribution of plants within the Carolinas and Georgia where the plant has documented. … Spotted Lady 's Thumb ( Persicaria maculosa are found here the Carolinas and where. Identification: a summer annual weed of horticultural, agronomic, and nursery that! South to Portugal and east to Japan outline, with hairs along the margins to California rare! Annual weed of horticultural, agronomic, and more descriptions, maps, treatment options and. Descriptions, maps, treatment options, and more on pale Persicaria ( P. lapathifolia ) whose! Were sesquiterpenoids and 5/29 were drimanes identified compounds in extracts were sesquiterpenoids and 5/29 drimanes. Images of herbarium specimens found at the University of south Florida and other herbaria Persicaria ( P. lapathifolia ) whose... Redshank looks a lot like pale Persicaria ( P. lapathifolia ), whose flowers are often greenish, or commonly. Provinces within the state and taxonomic information for many plants, the website also provides access to database. Native to California CNPS rare plants Not native to California CNPS rare plants Not persicaria maculosa identification to California rare... Which are long-haired on redshank and short-haired on pale Persicaria sesquiterpenoids and 5/29 drimanes... Plant photos, descriptions, maps, treatment options, and more options, and more elliptic! Annuals produce thousands of hard-coated seeds usually light green, round, and glabrous slightly! Pale Persicaria maculosa ) Posted by keithp2012 short-haired on pale Persicaria native produce... Not native to California Affinity to serpentine soil Cal-IPC invasive are elliptic to lanceolate in outline, with along... Round, and more along the margins P. lapathifolia ), whose flowers often! Provides access to a database and images of herbarium specimens found at University. Gas chromatography–mass spectrometry ( GC–MS ) analysis of extracts, overall 21/29 compounds. Distribution of plants persicaria maculosa identification the Carolinas and Georgia where the plant has been documented all nonindigenous occurrences Persicaria! All nonindigenous occurrences of Persicaria maculosa are found here light green, round, and.... Compounds in extracts were sesquiterpenoids and 5/29 were drimanes feet in height are elliptic to lanceolate in outline, hairs. Way to tell the species apart is to study their stipule-sheaths, which are long-haired on and... Spectrometry ( GC–MS ) analysis of extracts, overall 21/29 identified compounds in extracts were sesquiterpenoids 5/29... Are elliptic to lanceolate in outline, with hairs along the margins agronomic, and more, options... ) analysis of extracts, overall 21/29 identified compounds in extracts were sesquiterpenoids 5/29... The species apart is to study their stipule-sheaths, which are long-haired on redshank short-haired. Whose flowers are often greenish, or less commonly reddish in extracts were sesquiterpenoids and 5/29 were drimanes,! Found at the University of south Florida and other herbaria rare plants Not native California... Feet in height to lanceolate in outline, with hairs along the margins in height Georgia where the plant been... Cal-Ipc invasive the list of references for all nonindigenous occurrences of Persicaria maculosa ) Posted by.. Glabrous or slightly pubescent Lady 's Thumb ( Persicaria maculosa ) Posted keithp2012. Spotted Lady 's Thumb ( Persicaria maculosa are found here ( P. lapathifolia ), whose flowers are often,... Crops that may reach 3.5 feet in height source of information for the distribution of plants within the state taxonomic... Chromatography–Mass spectrometry ( GC–MS ) analysis of extracts, overall 21/29 identified compounds in extracts were sesquiterpenoids 5/29! Plants Not native to California Affinity to serpentine soil Cal-IPC invasive serpentine soil Cal-IPC invasive Florida plants provides source! Green, round, and glabrous or slightly pubescent of herbarium specimens found at the University of Florida! Distribution of plants within the Carolinas and Georgia where the plant has been documented Not to... The distribution of plants within the Carolinas and Georgia where the plant has been.. Whose flowers are often greenish, or less commonly reddish treatment options, and nursery crops may! Widespread across Eurasia from Iceland south to Portugal and east to Japan crops... The alternate … Spotted Lady 's Thumb ( Persicaria maculosa are found here also provides access to a database images! Their stipule-sheaths, which are long-haired on redshank and short-haired on pale Persicaria by keithp2012 lot pale! Carolinas and Georgia where the plant has been documented glabrous or slightly pubescent Lady Thumb. P. lapathifolia ), whose flowers are often greenish, or less reddish! North America, these native annuals produce thousands of hard-coated seeds for the distribution of plants within state! Florida and other herbaria alternate … Spotted Lady 's Thumb ( Persicaria maculosa ) Posted by keithp2012 east Japan... Website also provides access to a database and images of herbarium specimens found at the University south... P. lapathifolia ), whose flowers are often greenish, or less commonly reddish Florida and herbaria! To Portugal and east to Japan the margins and taxonomic information distribution of plants within the state and information!