Many insects feed on the leaves, stems, flowers and seeds, while some songbirds also feed on thistle seeds. Italian Translation of “thistle” | The official Collins English-Italian Dictionary online. During the vegetative stage it forms a rosette of non-spiny leaves (5–20 cm diameter). https://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=1504 It’s bloom period is February-July. Seeds turn sticky when wet, which also helps them disperse. Available: This category has the following 3 subcategories, out of 3 total. Blooming period: March to July. californicum Asteraceae (Sunflower family) (Sunflower family) United States Origin: Exotic Regularity: Regularly occurring. Calflora presents observation data from diverse sources. (Accessed: ). Last revised by: USDA NRCS National Plant Data Team: Curated and maintained by: USDA NRCS National Plant Data Team : Data Documentation. Some records may be multiple observations of the same plant populations or duplicate reports from different sources. It is native to: the Mediterranean region in southern Europe, North Africa, and Western Asia; East Europe and the Caucasus; and the Indian Subcontinent. 2019 Gary McDonald:! It’s bloom period is February-May.This plant has known uses according to Wikipedia.. Distribution Habitat Description Varieties Uses Box 2739 Avalon, CA 90704 (310) 510-1299 jknapp@catalinaconservancy.org. English: Italian plumeless thistle, Italian thistle; ... Calflora ID: 1504 PalDat plant ID: Carduus_pycnocephalus uBio ID: 461846 Plants of the World online ID: urn:lsid:ipni.org:names:188996-1 IRMNG ID: 11431342. Italian thistle. The Inventory of the Plants Occurring on the Lands of the Homestead Valley Land Trust compiled by Wood Biological forms the basis of this database. Centaurea solstitialis is an annual herb from the family Asteraceae. Carduus pycnocephalus, with common names including Italian thistle, Italian plumeless thistle, and Plymouth thistle, is a species of thistle. Bracts at the base of flowerheads are stiff and upright with hairs. Common name: Italian thistle. Reliably reducing milk thistle (Silybum marianum) to zero density: a treatment model for annual weeds with plastic life cycles. Carduus pycnocephalus, with common names including Italian thistle, Italian plumeless thistle, and Plymouth thistle, is a species of thistle. The plant is beneficial for pollinators that rely on nectar. Berkeley, California: 2020. Calflora - See the distribution of this species on Calflora's map of California. Cal-IPC Information . 2008 Zoya Akulova:!2004 Carol W. Witham:! Opuntia littoralis, a dicot, is a shrub (stem succulent) that is native to California and is also found outside of California, but is confined to western North America. stems. https://www.calflora.org/   It is a noxious weed in California, and is found mostly in the southern North Coast region, the Sierra Nevada foothills, the Central Coast, the San Francisco Bay Area, and the South Coast Ranges.   /   Google Images. Information on California plants for education, research and conservation. 2006 Chris Wagner, SBNF:!2019 Chico Hiking Association:!2017 James Bailey:!2019 Cynthia Powell:!2017 Cynthia Powell:!2019 James Bailey:!2019 Julie Kierstead Nelson:!2019 Julie Kierstead Nelson:!2004 Carol W. Witham:! Calflora; Carduus pycnocephalus.  -. Additional plants have been added as observations have been confirmed. star-thistle, Italian thistle, Klamathweed, skeleton weed, and puncture vine (Placer County 2001); many other noxious and invasive plants also have the potential to occur and spread (Table 3). Wooly thistle. Please carefully review data compact-headed thistle. The root systems explain why; spear thistle has a tap root, whereas creeping thistle grows on rhizomes. Cal-IPC Rating: Moderate. Common Names: Italian thistle. CalFlora: Information on California plants for education, research and conservation. Family: Asteraceae (Sunflower) Habitat: Roadsides, pastures, disturbed areas to 3500', South Coast, Transverse Range, Peninsular Range. Please carefully review data for your particular application. Weed Science, 27(3):327-332. weed, characteristic of disturbed places, Search efloras.org (Flora of North America), Photos on or duplicate reports from different sources. Common names: Italian thistle. Weed Science, 27(3):327-332.  -. Italian thistle * Carduus pycnocephalus ssp. Carduus tenuiflorus Slender flowered thistle. Plant Sci., … Calflora: Suggested Citation It’s bloom period is May-June. The CalFlora Database, Berkeley. Italian thistle Carduus pycnocephalus. Click here for the CNPS plant list for Homestead Valley as a .pdf. Name derivations: 1) Carduus 2) pycnocephalus. It is also a common weed in Oregon, Washington, and Idaho. PlantID.net [web application]. This plant and the related entity italicized and indented above can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Seeds can lie dormant in the soil for up to 10 years waiting for the right condition to germinate. 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