Russian knapweed

Rhaponticum repens

Summary 2

Rhaponticum repens, synonym Acroptilon repens, with the common name Russian knapweed, is a bushy rhizomatous perennial, up to 8 dm tall. Stems and leaves are finely arachnoid-tomentose becoming glabrous and green with age. The rosette leaves are oblanceolate, pinnately lobed to entire, 2–3 cm wide by 3–8 cm long. The lower cauline leaves are smaller, pinnately lobed; the upper leaves become much reduced, sessile, serrate to entire. The heads are numerous termina

Sources and Credits

  1. (c) Fraser Watson, some rights reserved (CC BY-NC), http://www.inaturalist.org/photos/2232257
  2. (c) Wikipedia, some rights reserved (CC BY-SA), https://en.wikipedia.org/wiki/Rhaponticum_repens

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