His son Francois, traveled with him and the father’s notes were later used for the 3-volume North American Sylva.Ĭommon Names: Some of the other Buttercups have assumed the same common name as others of the genus. Two important works of his are the Histoire des chênes de l'Amérique septentrionale (1801 - Oaks of North America), and the Flora Boreali-Americana (2 vols., 1803, published posthumously, and containing the description of this species). The author name for the plant classification - “Michx.” is for Andre Michaux (1746-1802), French botanist who made many exploring expeditions in the U.S. The family name of Buttercup, used to be "Crowfoot', hence the continuation of the old name in many of the other buttercup species common names. The variety name, nitidus, is from the Latin word niteō, meaning 'to shine'. The species, hispidus, means 'with fine hair'. The generic name Ranunculus, is from two Latin words, 'rana' meaning ' frog' and 'unculus' meaning 'little' and together they refer to a group of plants, many of which grow in moist places - like little frogs. Names: Ranunculus hispidus is in Ranunculus Sect. septentrionalis are usually found in more moist soil. Plant types that were formerly classified as R. A plant of semi-moist areas and rich loamy soils, it needs dappled sunlight in spring during flowering and then the leaves remain over summer in the shade. hsipidus grows on the wetland path in the Woodland Garden. With it's golden-yellow flowers with shining petals, R. Habitat: Buttercups comprise about 275 different species. Toxic: The plant has hazardous elements - see notes below. Buttercup seeds need some cold stratification for germination, at least 30 days and some species require 60 days. The margin of the achene forms a narrow rib which varies in size by the variety. Seed: Fertile receptacles elongate and produce flattened dry achenes, 2.2-5.2 × 2-3.8 mm in size, with a lance-shaped beak. The flower stalk, receptacle and the sepals are hairy. The nectaries are at the base of the petals. The base of the petals changes in color to a translucent yellow-green with fine dark green lines that act as nectar guides for the insects. The Flowers are up to 1/2 to 1 inch wide, with 5 (usually) yellow petals and normally have 5 lance-shaped, spreading to reflexed sepals that have fine hair (variation in position by variety) the petals are widest above the middle with rounded tips and are either the same length or up to 2x as long as the sepals stamens are numerous and surround a yellowish-green receptacle of numerous pistils with very short styles. The inflorescence consists of solitary flowers, rising from the upper leaf axils, that are very conspicuous over the dark green leaves. ![]() Leaves on the flower stem are simpler, sometimes just 3 linear leaflets with leaflets not stalked. Basal leaves are the largest, up to 3 inches long plus the stalk. Basal leaves have deeply divided 3-parted dark green leaflets each leaflet has lobes cut or toothed the terminal segment of the leaflet is long-stalked, the laterals are short-stalked. Leaves are both basal and stem with about the same shape. Swamp Buttercup is a native perennial forb growing on stems are 6 inches high and up to 36 inches long, hairy and sprawl as the season progresses. hispidus of which there are 3 accepted varieties. ![]() Most sources such as Flora of North America and the Minnesota plant lists of the DNR and the U of M Herbarium now combine these plants into R. septentrionalis) and Hispid Buttercup have almost the same characteristics except for the amount of long spreading hair on the stems and the preference for location. Species notes: Both Swamp Buttercup (the older R.
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