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Cirsium lecontei
''Cirsium lecontei'' (often called the Le Conte's thistle) is a North American plant species native to the southeastern United States. It is a perennial, or sometimes biennial, species of the thistle tribe within the sunflower family. It grows along the coastal plain from Louisiana to North Carolina.〔(Biota of North America Program 2014 county distribution map )〕
The flowering season is mainly spring to summer.〔 (2006): 24. ''Cirsium lecontei. In: Flora of North America North of Mexico'' Vol. 19 (Magnoliophyta: Asteridae, part 6: Asteraceae, part 1). Oxford University Press. ISBN 0-19-530563-9 (HTML fulltext )〕
==Description==
''Cirsium lecontei'' grows to about 35–110 cm and has a taproot, sometimes with root sprouts.〔 The plant is spiny and should be handled with care. The flowers are usually pink. The plant requires full sun. Le Conte's Thistle has a Wetland Indicator Status of FACW (facultative wetland, meaning that it usually occurs in wetlands but not always).〔(United States Department of Agriculture Plants Profile )〕 The stems are loosely arachnoid and stiffly ascending. Leaves have blades that are linear to oblong or narrowly elliptic, loosely arachnoid when young, abaxial and adaxial faces glabrous(smooth), and lobes undivided or coarsely few toothed. Basal leaves sometimes absent at flowering, petiolate. Heads born singly or 2–5 or 10 in open, corymbiform arrays. Penduncles are 5–30 cm elevated above stem leaves. Cypselae are ight brown, 5-5.75 mm long.〔 Plants are often unbranched or sparingly branched, with single terminal flower heads that are above the foliage(plant leaves). Stem and lower leaf surfaces have cob webby hairs. With age, the plant starts losing the hairs and becoming glabrous (hairless,smooth). Leaves of the mid-stem are approximately 15 cm long, the leaves gradually reduce in size up the stem, and are pinnately lobed. Corollas have feather-like pappus bristles (modified sepals) that are pinkish/purple.〔
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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