{"id":2241,"date":"2016-07-08T14:03:50","date_gmt":"2016-07-08T21:03:50","guid":{"rendered":"http:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2241"},"modified":"2018-01-30T13:34:23","modified_gmt":"2018-01-30T21:34:23","slug":"crupina-vulgaris-pers-ex-cass-bearded-creeper","status":"publish","type":"post","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=2241","title":{"rendered":"Bearded Creeper | Crupina vulgaris Pers. ex. Cass."},"content":{"rendered":"
\"common-crupina_1459126-UtahStateUniv-bugwood-WEB\"<\/a><\/strong><\/h5>\n
California Pest Rating for<\/strong><\/h5>\n
Bearded creeper | Crupina vulgaris <\/em><\/strong>Pers<\/strong>.<\/strong><\/a> ex. <\/strong>Cass<\/strong>.<\/strong><\/a><\/h5>\n
Asteridae: Asteraceae<\/strong><\/h5>\n
Pest\u00a0Rating: A | Proposed\u00a0<\/strong>Seed Rating: P<\/strong><\/h5>\n

 <\/p>\n

\n
PEST RATING PROFILE<\/h5>\n
Initiating Event: <\/strong><\/h5>\n

This plant has been rated as \u201cA\u201d on the CDFA Plant Pest Rating list for many years.<\/p>\n

History & Status: <\/strong><\/h5>\n

Bearded creeper is a winter annual, with erect, openly branched flowering stems to 60 cm tall at maturity. Most germination occurs after the first significant rains of fall\/early winter, but germination can continue throughout the rainy season. Fall germinating plants exist as basal rosettes until flowering stems bolt in spring. Rosette leaves wither as flowering commences in late spring\/early summer. Bearded creeper is adapted to many environmental conditions, is highly competitive for water and nutrients, and often produces solid stands. This adaptation to various conditions may be because it has been introduced from several locations in southern Europe. Although not an aggressive species in its native habitats, its adaptation to rough grazing lands of the Mediterranean region renders it invasive in natural grasslands of western North America. Here it contributes to degradation of native plant communities, lower forage production and increased risk of soil erosion.<\/p>\n

Official Control<\/strong><\/span>:<\/strong> As Bearded creeper has been an \u201cA\u201d listed noxious weed for years, most or all of the few historic localities have been treated and eradicated.<\/p>\n

California Distribution<\/span>:<\/strong>\u00a0 Modoc Plateau, North Coast Ranges (Sonoma Co.); to 250 m (850 ft).<\/p>\n

California Interceptions<\/span>:<\/strong> Vouchered specimens are known from Modoc and Sonoma Counties.<\/p>\n

United States<\/span>:<\/strong> Bearded creeper is known also from Idaho, Oregon, and Washington.<\/p>\n

International<\/span>: <\/strong>Bearded creeper is native to Europe. It is reported as naturalized and as an environmental weed in Canada.<\/p>\n

This risk Bearded creeper would pose to California is evaluated below.<\/p>\n

Consequences of Introduction:\u00a0 <\/strong><\/h5>\n

1) Climate\/Host Interaction<\/span>: <\/strong>The plant has adapted to a wide range of habitats in its native range and is demonstrated to have had multiple introductions into Western North America. Therefore bearded creeper receives a High (3)<\/strong><\/span> in this category.<\/p>\n

Evaluate if the pest would have suitable hosts and climate to establish in California.\u00a0 Score:<\/p>\n

– Low (1)<\/strong> Not likely to establish in California; or likely to establish in very limited areas.<\/p>\n

– Medium (2)<\/strong> may be able to establish in a larger but limited part of California.<\/p>\n

– High (3)<\/strong> likely to establish a widespread distribution in California.<\/span><\/p>\n

2) Host Range<\/span>:<\/strong> Risk is High (3)<\/strong> <\/span>as weeds do not require any one host, but grow wherever ecological conditions are favorable.<\/p>\n

Evaluate the host range of the pest. Score:<\/p>\n

– Low (1)<\/strong> has a very limited host range.<\/p>\n

– Medium (2)<\/strong> has a moderate host range.<\/p>\n

– High (3)<\/strong> has a wide host range.<\/span><\/p>\n

3) Pest Dispersal Potential<\/span>: <\/strong>Bearded creeper produces via numerous seeds that seem to be able to spread rather slowly. The seed bank is moderately persistent. Once established, bearded creeper can persist and has proven difficult to eradicate. Bearded creeper receives a Medium (2)<\/span> <\/strong>in this category.<\/p>\n

Evaluate the natural and artificial dispersal potential of the pest. Score:<\/p>\n

– Low (1)<\/strong> does not have high reproductive or dispersal potential.<\/p>\n

– Medium (2) has either high reproductive or dispersal potential.<\/strong><\/span><\/p>\n

– High (3)<\/strong> has both high reproduction and dispersal potential.<\/p>\n

4) Economic Impact<\/span>: <\/strong>Bearded creeper can lower range productivity, land value, and can trigger state quarantines. Bearded creeper receives a High (3<\/strong>)<\/span> in this category.<\/p>\n

Evaluate the economic impact of the pest to California using the criteria below. Score:<\/p>\n

A<\/strong>. The pest could lower crop yield.<\/span><\/p>\n

B. The pest could lower crop value (includes increasing crop production costs).<\/p>\n

C<\/strong>. The pest could trigger the loss of markets (includes quarantines).<\/span><\/p>\n

D<\/strong>. The pest could negatively change normal cultural practices.<\/span><\/p>\n

E. The pest can vector, or is vectored, by another pestiferous organism.<\/p>\n

F. The organism is injurious or poisonous to agriculturally important animals.<\/p>\n

G. The organism can interfere with the delivery or supply of water for agricultural uses.<\/p>\n

– Low (1)<\/strong> causes 0 or 1 of these impacts.<\/p>\n

– Medium (2)<\/strong> causes 2 of these impacts.<\/p>\n

– High (3)<\/strong> causes 3 or more of these impacts.<\/span><\/p>\n

5) Environmental Impact<\/span>:<\/strong> Bearded creeper is likely to trigger new chemical treatments by ranchers and land managers. The plant can dominate grassland and vernal pool areas, excluding native plants and lowering biodiversity. Rare taxa that might be affected include grassland species such as showy Indian clover (Trifolium amoenum<\/em>), CA filaree (California macrophylla<\/em>), and vernal pool species such as Burke\u2019s goldfields (Lasthenia burkei) and CA tiger salamander (Ambystoma californiense).<\/em> The plant can disrupt natural communities and exclude cultural plants from a landscape. Bearded creeper receives a High (3)<\/strong> <\/span>in this category.<\/p>\n

Evaluate the environmental impact of the pest on California using the criteria below.<\/p>\n

A<\/strong>. The pest could have a significant environmental impact such as lowering biodiversity, disrupting natural communities, or changing ecosystem processes.<\/span><\/p>\n

B. The pest could directly affect threatened or endangered species.<\/p>\n

C<\/strong>. The pest could impact threatened or endangered species by disrupting critical habitats.<\/span><\/p>\n

D<\/strong>. The pest could trigger additional official or private treatment programs.<\/span><\/p>\n

E. The pest significantly impacts cultural practices, home\/urban gardening or ornamental plantings.<\/p>\n

Score the pest for Environmental Impact. Score:<\/p>\n

– Low (1)<\/strong> causes none of the above to occur.<\/p>\n

– Medium (2)<\/strong> causes one of the above to occur.<\/p>\n

– High (3)<\/strong> causes two or more of the above to occur.<\/span><\/p>\n

Consequences of Introduction to California for Bearded creeper: High (14)<\/strong><\/h5>\n

Add up the total score and include it here.<\/p>\n

–Low<\/strong> = 5-8 points<\/p>\n

–Medium<\/strong> = 9-12 points<\/p>\n

–High<\/strong> = 13-15 points<\/span><\/p>\n

6) Post Entry Distribution and Survey Information<\/span>:<\/strong> Bearded creeper has been found in in 2 counties in California. It receives a Low (-1)<\/strong><\/span> in this category.<\/p>\n

Evaluate the known distribution in California. Only official records identified by a taxonomic expert and supported by voucher specimens deposited in natural history collections should be considered. Pest incursions that have been eradicated, are under eradication, or have been delimited with no further detections should not be included.<\/p>\n

–Not established (0)<\/strong> Pest never detected in California, or known only from incursions.<\/p>\n

–Low (-1)<\/strong> Pest has a localized distribution in California, or is established in one suitable climate\/host area (region).<\/span><\/p>\n

–Medium (-2)<\/strong> Pest is widespread in California but not fully established in the endangered area, or pest established in two contiguous suitable climate\/host areas.<\/p>\n

–High (-3)<\/strong> Pest has fully established in the endangered area, or pest is reported in more than two contiguous or non-contiguous suitable climate\/host areas.<\/p>\n

Final Score<\/h5>\n

The final score is the consequences of introduction score minus the post entry distribution and survey information score: High (13) <\/strong><\/span><\/p>\n

Uncertainty: <\/strong><\/h5>\n

Limited dispersability and fast treatment response has restricted bearded creeper\u2019s spread so far in CA. However, it has shown great ability to spread if neglected, as in OR & ID.<\/p>\n

Conclusion and Rating Justification: <\/strong><\/h5>\n

A very bad weed. Deserves an A rating as all known populations have been treated. Chances of state eradication are high with sustained efforts.<\/p>\n

References:<\/strong><\/h5>\n

Baldwin, B. G., D. H. Goldman, D. J. Keil, R. Patterson, T. J. Rosatti, and D. H. Wilken, editors. 2012. The Jepson manual: vascular plants of California, second edition. University of California Press, Berkeley.<\/p>\n

Consortium of California Herbaria (ucjeps.berkeley.edu\/consortium\/<\/a>).<\/p>\n

Flora of North America Editorial Committee, eds.\u00a0 1993+.\u00a0 Flora of North America North of Mexico.\u00a0 16+ vols.\u00a0 New York and Oxford.<\/p>\n

Garnatje, T., R. Vilatersana, C. T. Roch\u00e9, N. Garcia-Jacas, A. Susanna & D. C. Thill. 2002. Multiple introductions from the Iberian peninsula are responsible for invasion of Crupina vulgaris<\/em> in western North America. New Phytologist 154: 419-28.<\/p>\n

Invasive Species Compendium; Crupina vulgaris<\/em>: http:\/\/www.cabi.org\/isc\/datasheet\/13697<\/a><\/p>\n

Thill, D.C., C.T. Roche and D.L. Zamora. 1999. Common crupina. Pp. 189-201. In, Biology and Management of Noxious Rangeland Weeds. Eds. R.L. Sheley and J.K. Petroff, Oregon State Univ. Press, Corvallis.<\/p>\n

\n
Responsible Party:<\/strong><\/h5>\n

Dean G. Kelch, Primary Botanist; California Department of Food and Agriculture; 1220 N Street,\u00a0Sacramento, CA 95814; Tel. (916) 654-0312; plant.health[@]cdfa.ca.gov.<\/p>\n

\n
Comment Period:<\/h5>\n

The 45-day comment period opened on July 8, 2016 and\u00a0closes on Aug 22, 2016<\/span>.<\/p>\n

\n
Comment Format:<\/h5>\n

\u2666 \u00a0Comments should refer to the appropriate California Pest Rating Proposal Form subsection(s)\u00a0being commented on, as shown below.<\/p>\n

Example Comment:\u00a0<\/strong><\/p>\n

Consequences of Introduction: \u00a01. Climate\/Host Interaction:\u00a0[Your comment that relates to \u201cClimate\/Host Interaction\u201d here.<\/em>]<\/p>\n

\u2666 \u00a0Posted comments will not be able to be viewed immediately.<\/p>\n

\u2666 \u00a0Comments may not be posted if they:<\/p>\n

Contain inappropriate language which is not germane to\u00a0the pest rating proposal;<\/p>\n

Contains defamatory, false, inaccurate, abusive, obscene, pornographic,\u00a0sexually oriented, threatening, racially offensive, discriminatory or illegal\u00a0material;<\/p>\n

Violates agency regulations prohibiting sexual harassment or other forms\u00a0of discrimination;<\/p>\n

Violates agency regulations prohibiting workplace violence, including threats.<\/p>\n

\u2666 \u00a0Comments may be edited prior to posting to ensure they are entirely germane.<\/p>\n

\u2666 \u00a0Posted comments shall be those which have been approved in content and posted to the\u00a0website to be viewed, not just submitted.<\/p>\n

\n

Pest\u00a0Rating: A | Proposed\u00a0<\/strong>Seed rating: P<\/strong><\/h3>\n
\n

Posted by ls<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

California Pest Rating for Bearded creeper | Crupina vulgaris Pers. ex. Cass. Asteridae: Asteraceae Pest\u00a0Rating: A | Proposed\u00a0Seed Rating: P   PEST RATING PROFILE Initiating Event: This plant has been rated as \u201cA\u201d on the CDFA Plant Pest Rating list for many years. History & Status: Bearded creeper is a winter annual, with erect, openly … Continue reading Bearded Creeper | Crupina vulgaris Pers. ex. Cass.<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[7],"tags":[360,361,362,85],"class_list":["post-2241","post","type-post","status-publish","format-standard","hentry","category-plants","tag-asteridae-asteraceae","tag-bearded-creeper","tag-crupina-vulgaris","tag-weeds"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5l8vQ-A9","jetpack-related-posts":[{"id":1958,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=1958","url_meta":{"origin":2241,"position":0},"title":"Weeds","author":"Admin","date":"May 13, 2016","format":false,"excerpt":"\u00a0 Weeds are simply an unwanted plant in the wrong place, at the right time.\u00a0 The weeds can directly and indirectly impact agricultural crops and are just as costly to the environment as any other unwanted species. 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If you have registered and have not received the registration\u2026","rel":"","context":"In "B-Rated"","block_context":{"text":"B-Rated","link":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?cat=670"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6122,"url":"https:\/\/blogs.cdfa.ca.gov\/Section3162\/?p=6122","url_meta":{"origin":2241,"position":3},"title":"Youngia japonica (L.) DC. (Japanese hawkweed)","author":"Karen Olmstead","date":"May 22, 2019","format":false,"excerpt":"California Pest Rating Profile for Youngia japonica (L.) DC. (Japanese hawkweed)Synonym: Crepis japonica (L.) Benth.Family: AsteraceaePest Rating: B | Proposed Seed Rating: R Download pest rating profile Author: Karen Olmstead, Environmental Scientist; California Department of Food and Agriculture; 1220 N Street, Sacramento, CA 95814; Tel. 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