Cirsium drummondii Torrey & A. Gray (Q3013)
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Cirsium drummondii is a taxon with the rank species within the genus Cirsium
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Cirsium drummondii Torrey & A. Gray
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Cirsium drummondii is a taxon with the rank species within the genus Cirsium
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taxon/id/Cirsium drummondii Torrey & A. Gray
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Cirsium drummondii Torrey & A. Gray
Cirsium drummondii
Torrey & A. Gray
FNA Editorial Committee. 2006. Flora of North America north of Mexico. Volume 19: Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York.
accepted
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Drummond’s or dwarf or short-stemmed thistle (English)
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CA-BC
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Klinkenberg, B. (ed.). 2010+. E-Flora BC: Electronic Atlas of the Plants of British Columbia. Lab. for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver, B.C. http://www.eflora.bc.ca http://www.eflora.bc.ca/
CA-AB
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Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.
CA-SK
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Harms, V.L. 2006. Annotated catalogue of Saskatchewan vascular plants. http://www.biodiversity.sk.ca/Docs/AnnotatedCatalogueSKVascPlants2006.pdf
CA-MB
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Manitoba Checklist, 2002
CA-ON
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Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
CA-NT
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Porsild, A.E. & W.J. Cody. 1980. Vascular Plants of the Continental Northwest Territories, Canada. National Museum of Natural Sciences, Ottawa, Ont. 667 pp.
CA-AB
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CA-BC
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CA-MB
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CA-NT
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CA-ON
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CA-SK
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US-CO
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US-SD
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US-WY
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300–2300 m
300 meter
2,300 meter
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Stems erect, stout, fleshy, leafy, simple or distally branched, villous or tomentose with long, septate trichomes;
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branches usually short, stout, ascending.
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Leaves: blades oblongelliptic to oblanceolate, 15–30+ × 3–7 cm, usually shallowly to deeply pinnatifid, lobes ovate to broadly triangular, spreading, usually separated by broad U-shaped sinuses, spinose-dentate or coarsely lobed, main spines 2–5 (–8) mm, slender, abaxial faces villous with septate trichomes, at least along veins, sometimes thinly arachnoid, adaxial villous with septate trichomes;
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basal often present at flowering, spiny winged-petiolate;
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principal cauline winged-petiolate or sessile, not much reduced distally;
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distal reduced, similar to proximal, crowded around heads.
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Heads 1–5 (–9), borne singly or crowded in corymbiform arrays at tips of main-stems, often closely subtended and overtopped by 1–several distal leaves.
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Peduncles 0–5 (–10) cm, leafy-bracted.
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Involucres broadly ovoid to hemispheric, 3.5–5 × 3.5–5 cm (appearing much wider and ± campanulate in pressed specimens), loosely arachnoid on phyllary margins or glabrate.
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Phyllaries in 4–6 series, strongly imbricate, ovate or broadly lanceolate (outer) to lance-linear (inner), abaxial faces with ± narrow glutinous ridge;
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outer and mid appressed, spines erect to ascending, 2–3 mm;
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apices of mid and inner narrowed and scabrid-denticulate, innermost spineless, with expanded, flexuous, erose-denticulate tips.
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Corollas purple (white), 30–48 mm, tubes 17–30 mm, throats 6.5–11 mm, lobes 5–7 mm;
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style tips 5–7 mm.
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Cypselae stramineous to light-brown, 3.5–5.5 mm, apical collar yellow, narrow;
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pappi 30–42 mm.
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pinnatifid
usually shallowly; shallowly to deeply
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broadly lanceolate
lance-linear
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