Classification Hierarchy
Kingdom Plantae
Subkingdom Tracheophyta
Superdivision Spermatophyta
Division Magnoliophyta
Class Magnoliopsida
Subclass Asteridae
Order Asterales
Family Asteraceae
Genus Cirsium
Species Cirsium flodmanii
Flodman's thistle

Date: XXXXXXXX 2010. Location: XXXXXXXXX(map)


Scientific Name: Cirsium flodmanii

Common Name: Flodman's thistle

Origin: Native

Notes: "Primary Noxious Weed"; perennial, prefers moist poorly drained open areas; frequent in the N.W. quadrant of the state.

Additional references: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.

Field Marks for Identification:

Flowers: June; purplish-pink disc flowers; involucre 2-2.5 cm high, outer phyllaries with spreading prickles and glutinous strip on back; peduncle with white pubescence; cypselae 3-5 mm.

Leaves: rosette and cauline leaves gray-tomentose above and white felt-like beneath; cauline leaves deeply pinnately divided with needle shaped lobes.

Glossaries of botanical terms: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.

Flodman's thistle-1 Flodman's thistle-2 Flodman's thistle-3 Flodman's thistle-4