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of important plant nutrients, including nitrogen, phosphorus, potassium, and calcium. In addition, these soils contain trace minerals that are toxic to most plants, including cobalt, chromium, and nickel. California contains approximately 2300 square miles of ultramafic rocks. Thus, plants found in these environments have the adaptive ability to grow, despite these conditions. Furthermore, such an extreme environment facilitates the high rate of endemism found, as few species are able to dominate a serpentine plant community. Of all of the endemic
California plants, those of the family Asteraceae have the highest affinity for serpentine soils, based on the number of species represented in these serpentine plant communities. Most serpentine endemism is concentrated in the North Coastal and Klamath Mountain Ranges of northwestern California and southwestern Oregon.
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Forest
Service botanists over the past 25 years. However, the plant has most recently been placed on the California Rare Plant Rank 1B.2. It is only found in the narrow geographical range of Lake, Shasta, Tehama, and Trinity counties of California's Klamath Mountain Ecoregion. Occurrences outside of this range have not been documented.
283:
Ultramafic, "serpentine" soils in
California support a high rate of endemism in plant communities. Plate tectonics and erosion over time work to produce these unique soil environments that are characterized by high levels of magnesium and iron silicate materials. In addition, they feature low levels
274:
This representative of the tarweed group is an endangered endemic to
California, and characteristically associated with shallow, rocky, serpentine soils. It was formerly considered by the California Native Plant Society to be a species of special concern, based on rare plant surveys conducted by US
245:
plant community in these mountains, found at elevations of 1100–1600 meters. It is a rare annual herb producing a bristly stem up to about 25 centimeters tall studded with black resin glands. Its bristly leaves grow up to about 2 centimeters long and are mostly gathered near the base of the plant.
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Williams, J. N., Seo, C., Thorne, J., Nelson, J. K., Erwin, S., O’Brien, J. M., & Schwartz, M. W. (2009). Using species distribution models to predict new occurrences for rare plants. Diversity and
Distributions, 15(4),
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Williams, J. N., Seo, C., Thorne, J., Nelson, J. K., Erwin, S., O’Brien, J. M., & Schwartz, M. W. (2009). Using species distribution models to predict new occurrences for rare plants. Diversity and
Distributions, 15(4),
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Williams, J. N., Seo, C., Thorne, J., Nelson, J. K., Erwin, S., O’Brien, J. M., & Schwartz, M. W. (2009). Using species distribution models to predict new occurrences for rare plants. Diversity and
Distributions, 15(4),
358:
Williams, J. N., Seo, C., Thorne, J., Nelson, J. K., Erwin, S., O’Brien, J. M., & Schwartz, M. W. (2009). Using species distribution models to predict new occurrences for rare plants. Diversity and
Distributions, 15(4),
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Williams, J. N., Seo, C., Thorne, J., Nelson, J. K., Erwin, S., O’Brien, J. M., & Schwartz, M. W. (2009). Using species distribution models to predict new occurrences for rare plants. Diversity and
Distributions, 15(4),
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258:. The head has a few yellow ray florets several millimeters long and yellow disc florets. The fruit is an
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Safford, D. (2011). Serpentine
Endemism in the California Flora. Fremontia. 38(4): 32–40.
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Safford, D. (2011). Serpentine Endemism in the California Flora. Fremontia. 38(4): 32-40.
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Safford, D. (2011). Serpentine Endemism in the California Flora. Fremontia. 38(4): 32-40.
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Safford, D. (2011). Serpentine Endemism in the California Flora. Fremontia. 38(4): 32-40.
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Safford, D. (2011). Serpentine Endemism in the California Flora. Fremontia. 38(4): 32-40.
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Mason, H. (2007). Plant Diversity in the Klamath Mountains. Fremontia. 35(3): 1–13.
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Mason, H. (2007). Plant Diversity in the Klamath Mountains. Fremontia. 35(3): 1-13.
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Mason, H. (2007). Plant Diversity in the Klamath Mountains. Fremontia. 35(3): 1-13.
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Mason, H. (2007). Plant Diversity in the Klamath Mountains. Fremontia. 35(3): 1-13.
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California Native Plant Link Exchange. Plant Information.
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California Native Plant Link Exchange. Plant Information.
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213:) is a species of flowering plant in the family
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254:lined with hairy, glandular, purple-tipped
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178:(T.W.Nelson & J.P.Nelson) B.G.Baldwin
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725:urn:lsid:ipni.org:names:1012652-1
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909:urn:lsid:ipni.org:names:149200-2
445:, in Jepson Flora Project (eds.)
304:, in Jepson Flora Project (eds.)
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233:, where it is limited to the
237:and adjacent slopes of the
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16:Species of flowering plant
217:known by the common name
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41:Scientific classification
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981:Plants described in 1980
241:. It is a member of the
441:Bruce G. Baldwin 2014.
336:Bruce G. Baldwin 2014.
300:Bruce G. Baldwin 2014.
478:Flora of North America
448:USDA Plant Profile *
976:Flora of California
532:Harmonia stebbinsii
502:Harmonia stebbinsii
450:USDA Plants Profile
443:Harmonia stebbinsii
338:Harmonia stebbinsii
302:Harmonia stebbinsii
203:Harmonia stebbinsii
172:Harmonia stebbinsii
25:Harmonia stebbinsii
456:Harmonia stebinsii
315:Harmonia stebinsii
239:North Coast Ranges
154:H. stebbinsii
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681:Open Tree of Life
494:Taxon identifiers
235:Klamath Mountains
219:Stebbins' tarweed
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211:Madia stebbinsii
193:Madia stebbinsii
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229:to northern
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891:NatureServe
839:iNaturalist
629:iNaturalist
526:Wikispecies
84:Angiosperms
965:Categories
694:Plant List
553:Calflora:
288:References
256:phyllaries
231:California
215:Asteraceae
130:Asteraceae
791:Q38737821
699:gcc-91902
647:1012652-1
608:250066836
148:Species:
120:Asterales
54:Kingdom:
917:Tropicos
896:2.158632
870:11394939
857:149200-2
785:Wikidata
738:50159510
733:Tropicos
517:Q5659231
511:Wikidata
467:565–576.
397:565-576.
378:565-576.
359:565-576.
327:565-576.
225:. It is
185:Synonyms
141:Harmonia
126:Family:
110:Asterids
97:Eudicots
971:Madieae
948:1206269
922:2727049
831:3119943
764:1100171
621:5396014
546:1120799
279:Ecology
227:endemic
136:Genus:
116:Order:
58:Plantae
883:503651
844:165071
712:HAST10
707:PLANTS
686:353823
660:780361
595:486936
264:pappus
260:achene
943:WoRMS
865:IRMNG
805:6R3P7
759:WoRMS
634:77336
569:6LCCG
221:, or
104:Clade
91:Clade
78:Clade
65:Clade
904:POWO
878:ITIS
852:IPNI
826:GBIF
818:3076
813:CNPS
720:POWO
673:4256
668:NCBI
655:ITIS
642:IPNI
616:GBIF
582:1055
577:CNPS
556:8940
541:BOLD
246:The
208:syn.
930:WFO
800:CoL
746:WFO
603:FNA
590:EoL
564:CoL
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