WebEtymology: Cirsium = from the Greek kirsion, "a kind of thistle;" also cirsos meaning "a swollen vein" for which thistle was once a remedy. Characteristics: Spiny biennials or perennials.Leaves alternate, sessile, usually pinnatifid and spiny. Flowers all tubular, perfect, or (in C. arvense) dioecious, rose to purple, rarely white or cream.. Involucral bracts … WebThis thistle was not the Canada thistle (Cirsium canadensis), which is a non-native weed that is commonly seen along the roadsides and in your garden.What I stumbled on was Hill’s thistle (Cirsium hillii), considered rare in the Chicago region.Hill’s thistle was originally …
Saving threatened plant species: Reintroduction of Hill’s …
WebApr 16, 2024 · Hill’s thistle (Cirsium hillii (Canby) Fernald) is a perennial plant endemic to the Great Lakes region of North America. Hill’s thistle is listed as threatened in Ontario and Canada where it is found in globally rare alvar habitats. The main objective of this study … WebEtymology: Hillii = for Ellsworth Jerome Hill (1833-1917), a Presbyterian minister and an American botanist. Plants: erect, biennial/(perennial?), 1'-3' tall, spiny, sweet smelling forb with thick, hollow roots Leaves: basal leaves often edged with red and in a large, … shure headquarters address
Non-Native Invasive Thistles Iowa’s Native Thistles - Xerces …
WebCirsium hillii Monitoring Plants of Concern at Chicago Botanic garden Daniella DeRose, Chicago Botanic Garden Chicago Botanic Garden’s Plants of Concern (POC) program is a collaboration between citizen scientists, natural resource managers, and researchers to … WebCirsium hillii also reproduces vegetatively by adventitious buds that form along the lateral roots. The primary taproots die with the remainder of the plant after flowering. Several lateral shoots may be produced by a single plant. Suppression of the natural fire regime in … WebApr 16, 2024 · Hill’s thistle (Cirsium hillii (Canby) Fernald) is a perennial plant endemic to the Great Lakes region of North America. Hill’s thistle is listed as threatened in Ontario and Canada where it ... the outskirts of new york