Cirsium hookerianum Nuttall (Q3017)
Jump to navigation
Jump to search
Cirsium hookerianum is a taxon with the rank species within the genus Cirsium
| Language | Label | Description | Also known as |
|---|---|---|---|
| English |
Cirsium hookerianum Nuttall
|
Cirsium hookerianum is a taxon with the rank species within the genus Cirsium
|
Statements
taxon/id/Cirsium hookerianum Nuttall
0 references
Cirsium hookerianum Nuttall
Cirsium hookerianum
Nuttall
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
1 reference
CA-BC
1 reference
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
1 reference
Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.
CA-AB
1 reference
CA-BC
1 reference
US-ID
1 reference
US-MT
1 reference
US-WA
1 reference
US-WY
1 reference
600–2900 m
600 meter
2,900 meter
1 reference
Stems usually 1 and erect, less commonly several and ascending, simple to sparingly short-branched in distal 1/2, variably villous with jointed trichomes, and/or finely arachnoid, or ± glabrate;
1 reference
branches on distal stems 0–many, short, ascending.
1 reference
Leaves: blades linear-oblong to elliptic, 5–25 × 1–8 cm, subentire to coarsely dentate or deeply pinnatifid, lobes lance-oblong to broadly triangular, spinulose to spiny-dentate or shallowly lobed, main spines 2–10 mm, abaxial faces usually ± densely gray or white-tomentose with felted arachnoid trichomes, ± villous to tomentose along major veins with septate trichomes, sometimes glabrous or glabrate, adaxial ± green, glabrous to thinly arachnoid, often ± villous or tomentose with septate trichomes;
1 reference
basal often present at flowering, spiny winged-petiolate or sessile;
1 reference
principal cauline well distributed, proximally winged-petiolate, distally sessile, gradually reduced, bases sometimes short-decurrent;
1 reference
distal ± reduced, often narrower than proximal, sometimes with non-pigmented bases, sometimes pectinately spiny.
1 reference
Heads 1–many, borne singly or crowded in spiciform, racemiform, subcapitate, or sometimes more openly branched corymbiform arrays.
1 reference
Peduncles 0–8+ cm.
1 reference
Involucres (green or often purplish), broadly ovoid, 2–3.3 × 1.5–4 cm, loosely to densely villous with septate trichomes to tomentose and/or arachnoid.
1 reference
Phyllaries in 4–8 series, imbricate to subequal, bases short-appressed, entire, abaxial faces with or without narrow glutinous ridge, apices stiffly spreading to ascending, linear, long, plane, spines straight, slender, 3–5 mm;
1 reference
apices of inner flexuous, sometimes expanded and erose.
1 reference
Corollas white, ochroleucous, or occasionally pink, 20–28 mm, tubes 10–13 mm, throats 6.5–9 mm, lobes 5–7 mm;
1 reference
style tips 3–5.5 mm.
1 reference
Cypselae dark-brown, 5–6.5 mm, apical collars not differentiated;
1 reference
pappi 18–22 mm. 2n = 34.
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
subentire
coarsely dentate or deeply pinnatifid
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
usually more or less densely
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference
1 reference