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Veronica filiformis
''Veronica filiformis'' is a species of flowering plant in the genus ''Veronica''. It is known by many common names, including slender speedwell, creeping speedwell, threadstalk speedwell and Whetzel weed. It is native to eastern Europe and western Asia, and it is known in many other regions as an introduced species and a common weed.
==Description==
''V. filiformis'' is a rhizomatous perennial herb producing mats of hairy stems that readily root at nodes that touch substrate. It is self-sterile and rarely seeds, being spread by stolons.〔 The corolla of ''V. filiformis'' is four-lobed and blueish with a white tip, around 8–10 mm in diameter, the top lobe being largest since it is actually a fusion of two lobes. At the center are two long, protruding stamens. Solitary flowers occur in leaf axils. They are on relatively long, slender stalks that arise from the leaf axils, and appear between April and July. The leaves, found near the base of the stem, are 5–10 mm across, rounded or kidney-shaped with blunt teeth and short stalks, and smaller on distal parts.It is perennial.〔Parnell, J. and Curtis, T. 2012. ''Webb's An Irish Flora'' Cork University Press ISBN 978-185918-4783〕 In Ireland, the plant was sewn into the clothing of travellers for good luck.〔(【引用サイトリンク】title=Slender Speedwell - Veronica filiformis )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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