Difference between revisions of "Senecio megacephalus Nuttall (Q2934) "

taxon name

Senecio megacephalus

1 reference

taxon authority

Nuttall

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taxon rank

species

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taxon status

accepted

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common name

séneçon à grands capitules (French)

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large-flowered ragwort (English)

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rocky ragwort (English)

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large-headed groundsel (English)

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VasCan taxon numeric id

3416

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distribution

CA-AB

establishment of distribution

occurrence status

present

native

1 reference

publication

Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.

CA-BC

establishment of distribution

occurrence status

present

native

1 reference

publication

Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.

CA-AB

Alta.

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CA-BC

B.C.

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US-ID

Idaho

1 reference

US-MT

Mont.

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US-WY

Wyo.

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parent taxon

Senecio Linnaeus

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taxon habit

herb

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GBIF taxon key

3108328

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Global Biodiversity Information Facility

IUCN Redlist Category

NE

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Global Biodiversity Information Facility

phenology

Flowering summer.

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taxon habitat

sites

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mountain slopes

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rocky

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elevation

1500–2500 m

measurement range from

1,500 meter

measurement range to

2,500 meter

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special status

E

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taxon description fragment

Herbage loosely arachno-tomentose, unevenly glabrescent.

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d0_s1

Stems single or clustered.

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d0_s2

weakly petiolate;

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d0_s4

blades lanceolate to narrowly oblanceolate, 10–18+ × 1–2 (–3+) cm, bases tapered, margins entire or wavy (often with dark, cartilaginous denticles; mid leaves similar, smaller, sessile; distal leaves bractlike).

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d0_s5

Heads usually 1 (sometimes subtended by 1–2 smaller heads).

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d0_s6

Calyculi of 5–8+ linear to filiform bractlets (lengths 1/2–7/8+ phyllaries).

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d0_s7

Phyllaries ± 21, 9–12 (–14) mm, tips not notably blackened (short-hairy).

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d0_s8

Ray-florets ± 13;

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d0_s9

corolla laminae (5–) 15–20 mm.

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d0_s10

2n = 40.

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d0_s12

morphology statement

stem

single

1 reference

d0_s2

stem

arrangement

growth form

clustered

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d0_s2

leaf

size

reduced

progressively; distally

1 reference

d0_s4

leaf

architecture

petiolate

weakly

1 reference

d0_s4

lanceolate

narrowly oblanceolate

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d0_s5

length

10

18

1 reference

d0_s5

atypical width

2

3

1 reference

d0_s5

width

1

2

1 reference

d0_s5

inflorescence phyllaries base

tapered

1 reference

d0_s5

inflorescence palea margin

entire

1 reference

d0_s5

inflorescence palea margin

wavy

1 reference

d0_s5

inflorescence bractlet

5

8

1 reference

d0_s7

inflorescence bractlet

linear

filiform

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d0_s7

inflorescence phyllary tip

coloration

blackened

not notably

1 reference

d0_s8

inflorescence flower ray-floret

13

1 reference

d0_s9

inflorescence flower ray lamina

atypical some measurement

5

15

1 reference

d0_s10

inflorescence flower ray lamina

some measurement

15

20

1 reference

d0_s10

chromosome

40

1 reference

d0_s12

whole organism herbage

pubescence

arachno-tomentose

loosely

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d0_s1

whole organism herbage

pubescence

glabrescent

unevenly

1 reference

d0_s1

general structure head

1

1 reference

d0_s6

fruit cypsela

pubescence

glabrous

1 reference