Difference between revisions of "Prenanthes alba Linnaeus (Q6250) "

Flora Commons

taxon name

Prenanthes alba

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taxon authority

Linnaeus

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taxon rank

species

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taxon status

synonym

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VasCan taxon numeric id

11923

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Nabalus albus (Linnaeus) Hooker

taxon synonym of

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common name

White rattlesnakeroot (English)

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prenanthe blanche (English)

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phenology

Flowering Aug–Oct.

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taxon habitat

sandy oak-scrub

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open oak-hickory woods

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forests

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dunes

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creek banks

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road cuts

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elevation

100–200 m

measurement range from

100 meter

measurement range to

200 meter

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distribution

CA-MB

Man.

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CA-ON

Ont.

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CA-QC

Que.

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CA-SK

Sask.

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US-AR

Ark.

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US-CT

Conn.

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US-DE

Del.

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US-GA

Ga.

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US-IL

Ill.

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US-IN

Ind.

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US-IA

Iowa

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US-KY

Ky.

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US-ME

Maine

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US-MD

Md.

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US-MA

Mass.

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US-MI

Mich.

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US-MN

Minn.

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US-MO

Mo.

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US-NH

N.H.

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US-NJ

N.J.

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US-NY

N.Y.

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US-NC

N.C.

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US-ND

N.Dak.

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US-OH

Ohio

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US-PA

Pa.

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US-RI

R.I.

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US-SD

S.Dak.

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US-TN

Tenn.

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US-VT

Vt.

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US-VA

Va.

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US-WV

W.Va.

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US-WI

Wis.

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special status

E

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taxon description fragment

Plants 20–175 cm;

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d0_s0

taproots short and thickened, fibrous.

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d0_s1

Stems erect, often mottled purple or nearly all purple (often with stout bases, 8–12 mm diam.), proximally glabrous, tomentulose distally.

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d0_s2

Leaves: proximal present at flowering;

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d0_s3

petioles narrowly winged (to 18 cm);

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d0_s4

blades usually ovate to triangular or cordate, 4–30 × 3–18 cm, thin to coriaceous, bases often hastate, margins usually coarsely dentate or serrate, sometimes deeply 3-lobed or parted, lobes acute, faces glabrous adaxially, pale to whitish and sometimes hirsute abaxially;

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d0_s5

distal reduced.

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d0_s6

Heads (3–8, in clusters) in paniculiform arrays (densest near apices).

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d0_s7

Involucres cylindric to campanulate, 13–15 × 3–5 mm.

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d0_s8

Calyculi of 5–7, triangular to lanceolate bractlets 1–3 mm, glabrous.

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d0_s9

Phyllaries (6–) 8 (–9), ± purplish or maroon, lanceolate, 10–13 mm, margins scarious, minutely ciliate, apices acute, faces glabrous.

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d0_s10

Florets 7–9 (–13);

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d0_s11

corollas whitish to pale-pink, lavender or red, 9–15 mm.

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d0_s12

Cypselae brown or tan, elliptical to linear, 3.5–6 mm;

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d0_s13

pappi usually reddish-brown, sometimes rusty, rarely yellowish, 6–7 mm. 2n = 32.

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d0_s14

morphology statement

whole organism

20

175

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d0_s0

whole organism

growth form

plant

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d0_s0

orientation

erect

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d0_s2

mottled purple

often

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d0_s2

nearly

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d0_s2

density

purple

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d0_s2

glabrous

proximally

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d0_s2

tomentulose

distally

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d0_s2

leaf

presence

absent

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d0_s3

leaf petiole

winged

narrowly

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d0_s4

usually ovate

triangular or cordate

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d0_s5

length

4

30

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d0_s5

3

18

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d0_s5

thin

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d0_s5

texture

coriaceous

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d0_s5

inflorescence phyllaries base

hastate

often

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d0_s5

dentate

usually coarsely

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d0_s5

serrate

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d0_s5

3-lobed

sometimes deeply

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d0_s5

parted

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d0_s5

inflorescence flower corolla lobe

acute

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d0_s5

glabrous

adaxially

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d0_s5

pale

whitish

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d0_s5

hirsute

sometimes; abaxially

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d0_s5

leaf

size

reduced

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d0_s6

inflorescence involucre

cylindric

campanulate

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d0_s8

inflorescence involucre

length

13

15

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d0_s8

inflorescence involucre

3

5

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d0_s8

inflorescence calyculus

triangular

lanceolate

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d0_s9

inflorescence bractlet

1

3

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d0_s9

inflorescence bractlet

glabrous

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d0_s9

atypical quantity

6

8

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d0_s10

atypical quantity

8

9

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d0_s10

quantity

8

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d0_s10

purplish

more or less

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d0_s10

maroon

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d0_s10

lanceolate

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d0_s10

10

13

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d0_s10

texture

scarious

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d0_s10

ciliate

minutely

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d0_s10

inflorescence flower gynoecium pistil style apex

acute

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d0_s10

glabrous

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d0_s10

inflorescence flower corolla

whitish

pale-pink lavender or red

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d0_s12

inflorescence flower corolla

whitish

pale-pink lavender or red

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d0_s12

inflorescence flower corolla

9

15

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d0_s12

reddish-brown

usually

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d0_s14

rusty

sometimes

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d0_s14

yellowish

rarely

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d0_s14

6

7

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d0_s14

chromosome

quantity

32

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d0_s14

root taproot

height

length

size

short

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d0_s1

root taproot

size

thickened

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d0_s1

root taproot

texture

fibrous

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d0_s1

general structure bundle array

paniculiform

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d0_s7

inflorescence flower disc floret

atypical quantity

9

13

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d0_s11

inflorescence flower disc floret

quantity

7

9

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d0_s11

brown

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d0_s13

tan

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d0_s13

arrangement

elliptical

linear

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d0_s13

3.5

6

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