Taraxacum alaskanum Rydberg (Q3178)

taxon name

Taraxacum alaskanum

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taxon authority

Rydberg

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taxon rank

species

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taxon status

accepted

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common name

pissenlit d'Alaska (French)

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Alaska dandelion (English)

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Alaska dandelion (English)

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VasCan taxon numeric id

3606

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distribution

CA-BC

establishment of distribution

occurrence status

present

native

1 reference

publication

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-YT

establishment of distribution

occurrence status

present

native

1 reference

publication

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. http://www.efloras.org/volume_page.aspx?volume_id=1019&flora_id=1

CA-NT

occurrence status

excluded

1 reference

publication

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. http://www.efloras.org/volume_page.aspx?volume_id=1019&flora_id=1

CA-YT

original value

Yukon

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US-AK

original value

Alaska

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Russian Far East

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parent taxon

Taraxacum F. H. Wiggers

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taxon habit

herb

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GBIF taxon key

5394172

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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

alpine slopes

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tundra

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arctic tundra

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rich arctic seaside bluffs

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elevation

0–2200 m

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taxon description fragment

Plants (1.5–) 3–9 (–16, mostly in fruit) cm;

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d0_s0

taproots sometimes branched.

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d0_s1

Stems 1–3+, ascending, proximally purplish, glabrous or glabrate.

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d0_s2

Leaves fewer than 10, horizontal to patent (green);

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d0_s3

blades oblanceolate or narrowly oblong (usually runcinate), (1.5–) 2.2–11.6 × 0.4–2.2 cm, bases attenuate, margins usually lobed regularly, ± deeply, in 3–5 (–6) pairs, occasionally (younger) only toothed or denticulate, lobes usually retrorse, occasionally straight or antrorse, triangular to narrowly triangular, terminals often largest, acuminate to acute-rounded, sometimes toothed, teeth 0 (–1) on lobes or sinuses, triangular, apices obtuse to acute, faces glabrous.

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d0_s5

Calyculi of 7–9, spreading, becoming reflexed to revolute, often purplish, particularly adaxially, ovate to lanceovate or elliptic bracklets in 2 series, 2.5–4.5 × 1.7–2.7 mm, margins not or narrowly scarious, hyaline, apices acuminate to caudate, tips sometimes flaring, scarious, erose, hornless.

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d0_s6

Involucres dark green, often glaucous, often purplish, particularly adaxially, cylindro to narrowly campanulate, 9–14 mm.

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d0_s7

Phyllaries 7–8 in 3 series, lanceolate, 1.4–2.6 (–4) mm wide, margins not scarious (some outer) to narrowly scarious, apices long-acuminate, tips purplish or grayish, often flared, scarious, hornless.

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d0_s8

Florets 30–55+;

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d0_s9

corollas yellow (gray-striped abaxially, sometimes becoming orange purplish with age on drying), outer 11–14 × 1.5–2.4 mm.

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d0_s10

Cypselae maroon to brown or reddish-brown, sometimes grayish, bodies oblanceoloid (sometimes narrowly), 3–3.8 mm, cones conic, 0.8–1 mm, beaks stout, 3–6 mm, ribs 15 narrow (6 prominent), faces proximally ± tuberculate, ± muricate in distal 1/3–1/2 (or less);

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d0_s11

pappi white to yellowish, 4–6.5 mm. 2n = 24, 32 (as T. kamtschaticum).

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d0_s12

morphology statement

whole organism

atypical some measurement

1.5

3

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d0_s0

whole organism

3

9

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d0_s0

whole organism

growth form

plant

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d0_s0

1

3

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d0_s2

ascending

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d0_s2

purplish

proximally

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d0_s2

glabrous

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d0_s2

glabrate

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d0_s2

leaf

0

10

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d0_s3

leaf

horizontal

patent

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d0_s3

oblanceolate

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d0_s5

oblong

narrowly

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d0_s5

atypical length

1.5

2.2

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d0_s5

length

2.2

11.6

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d0_s5

0.4

2.2

1 reference

d0_s5

inflorescence phyllaries base

attenuate

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d0_s5

lobed

usually; regularly

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d0_s5

toothed

occasionally only

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d0_s5

denticulate

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d0_s5

retrorse

usually

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d0_s5

course

straight

occasionally

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d0_s5

antrorse

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d0_s5

triangular

narrowly triangular

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d0_s5

inflorescence flower gynoecium pistil style apex

obtuse

acute

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d0_s5

leaf face

glabrous

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d0_s5

spreading

of 7-9

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d0_s6

reflexed

becoming

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d0_s6

vernation

revolute

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d0_s6

purplish

often

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d0_s6

ovate

lanceovate or elliptic

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d0_s6

length

2.5

4.5

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d0_s6

1.7

2.7

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d0_s6

scarious

narrowly

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d0_s6

hyaline

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d0_s6

inflorescence flower gynoecium pistil style apex

acuminate

caudate

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d0_s6

flaring

sometimes

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d0_s6

scarious

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d0_s6

architecture

relief

erose

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d0_s6

hornless

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d0_s6

dark green

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d0_s7

glaucous

often

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d0_s7

purplish

often

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d0_s7

cylindro

narrowly campanulate

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d0_s7

9

14

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d0_s7

7

8

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d0_s8

lanceolate

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d0_s8

2.6

4

1 reference

d0_s8

1.4

2.6

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d0_s8

not scarious

narrowly scarious

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d0_s8

inflorescence flower gynoecium pistil style apex

long-acuminate

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d0_s8

purplish

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d0_s8

grayish

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d0_s8

flared

often

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d0_s8

scarious

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d0_s8

hornless

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d0_s8

yellow

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d0_s10

position

outer

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d0_s10

length

11

14

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d0_s10

1.5

2.4

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d0_s10

cone

conic

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d0_s11

cone

0.8

1

1 reference

d0_s11

fruit beak

fragility

size

stout

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d0_s11

fruit beak

3

6

1 reference

d0_s11

leaf rib

15

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d0_s11

leaf rib

size

narrow

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d0_s11

leaf face

relief

tuberculate

proximally more or less

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d0_s11

leaf face

relief

muricate

more or less

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d0_s11

fruit pappus

white

yellowish

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d0_s12

fruit pappus

4

6.5

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d0_s12

chromosome

24

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d0_s12

chromosome

32

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d0_s12

root taproot

architecture

branched

sometimes

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d0_s1

inflorescence flower disc floret

30

55

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d0_s9

fruit cypsela

maroon

brown or reddish-brown

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d0_s11

fruit cypsela

grayish

sometimes

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d0_s11

general structure body

oblanceoloid

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d0_s11

general structure body

3

3.8

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