metabolites of both flowers and leaves of Persicaria hydropiper, Persicaria maculosa and Persicaria minor, three species which occur in the same habitat, were compared. The stems are usually light green, round, and glabrous or slightly pubescent. 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. Persicaria maculosa (syn. For many plants, the website displays maps showing physiographic provinces within the Carolinas and Georgia where the plant has been documented. 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. Leaves. Identification: A summer annual weed of horticultural, agronomic, and nursery crops that may reach 3.5 feet in height. Persicaria maculosa, Spotted Lady's-thumb, Heart's-ease. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. The alternate … View plant photos, descriptions, maps, treatment options, and more. Redshank looks a lot like pale persicaria (P. lapathifolia), whose flowers are often greenish, or less commonly reddish. 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. Spotted Lady's Thumb (Persicaria maculosa) Posted by keithp2012. Identification Notes. Stems. Polygonum persicaria L. syn. introduced annual, reproducing by seed. Native to California CNPS rare plants Not native to California Affinity to serpentine soil Cal-IPC invasive plants Cotyledons seedlings are elliptic to lanceolate in outline, with hairs along the margins. Using gas chromatography–mass spectrometry (GC–MS) analysis of extracts, overall 21/29 identified compounds in extracts were sesquiterpenoids and 5/29 were drimanes. The list of references for all nonindigenous occurrences of Persicaria maculosa are found here. Polygonum persicaria) is an annual plant in the buckwheat family, Polygonaceae.Common names include lady's thumb, spotted lady's thumb, Jesusplant, and redshank. Persicaria maculosa. The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. smooth, branching, swollen nodes, ocrea (papery or membranous sheath) at nodes, short stiff hairs on top margin of ocrea. Learn more about Spotted Lady's Thumb. 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