Difference between revisions of "Prenanthes altissima Linnaeus (Q6251) "

Flora Commons

taxon name

Prenanthes altissima

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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

11924

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Nabalus altissimus (Linnaeus) Hooker

taxon synonym of

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common name

Tall rattlesnakeroot (English)

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prenanthe élevée (English)

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phenology

Flowering Aug–Nov.

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taxon habitat

open deciduous hardwood

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mixed woods

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shaded slopes

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bluffs

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disturbed areas

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elevation

50–800 m

measurement range from

50 meter

measurement range to

800 meter

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distribution

CA-NB

N.B.

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CA-NS

N.S.

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CA-ON

Ont.

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CA-PE

P.E.I.

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CA-QC

Que.

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US-AL

Ala.

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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-KY

Ky.

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US-LA

La.

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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-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-OH

Ohio

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US-OK

Okla.

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US-PA

Pa.

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US-RI

R.I.

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US-SC

S.C.

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US-TN

Tenn.

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US-TX

Tex.

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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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special status

E

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taxon description fragment

Plants 40–250 cm;

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d0_s0

taproots thickened, knotty, tuberous.

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d0_s1

Stems erect, greenish to purplish, glabrous proximally, often tomentulose distally.

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d0_s2

Leaves: proximal present at flowering;

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d0_s3

petioles winged;

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d0_s4

blades usually ovate or triangular, 4–15 × 2–16 cm, thin, bases truncate to hastate or cordate, margins entire or shallowly dentate, often deeply 3-lobed, faces glabrous or with scattered hairs on veins;

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d0_s5

distal reduced in size and lobing.

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d0_s6

Involucres cylindric, 9–14 × 2–3 mm.

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d0_s8

Calyculi of 4–6, blackish, triangular bractlets 1–4 mm, glabrous.

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d0_s9

Phyllaries (4–) 5 (–6), pale green, often blackish at bases and apices, linear to lanceolate, 10–12 mm, glabrous or sparsely hairy.

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d0_s10

Florets (4–) 5 (–6);

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d0_s11

corollas pale-yellow to greenish yellow, 7–15 mm.

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d0_s12

Cypselae brown to tan, subcylindric, subterete, 4–5 mm, indistinctly 5–10-ribbed;

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d0_s13

pappi usually whitish or pale-yellow, sometimes reddish-brown, 5–6 mm. 2n = 16.

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d0_s14

morphology statement

whole organism

40

250

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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

greenish

purplish

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d0_s2

glabrous

proximally

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d0_s2

tomentulose

often; distally

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d0_s2

leaf

presence

absent

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d0_s3

leaf petiole

winged

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d0_s4

ovate

usually

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d0_s5

triangular

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d0_s5

length

4

15

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d0_s5

2

16

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d0_s5

thin

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d0_s5

inflorescence phyllaries base

truncate

hastate or cordate

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d0_s5

inflorescence palea margin

entire

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d0_s5

inflorescence palea margin

dentate

shallowly

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d0_s5

inflorescence palea margin

3-lobed

often deeply

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d0_s5

leaf face

glabrous

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d0_s5

leaf face

with scattered hairs

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d0_s5

leaf

size

reduced

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d0_s6

leaf

lobing

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d0_s6

inflorescence involucre

cylindric

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d0_s8

inflorescence involucre

length

9

14

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d0_s8

inflorescence involucre

2

3

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d0_s8

inflorescence calyculus

glabrous

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d0_s9

4

6

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d0_s9

blackish

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d0_s9

triangular

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d0_s9

1

4

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d0_s9

4

5

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d0_s10

5

6

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d0_s10

5

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d0_s10

pale green

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d0_s10

blackish

often

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d0_s10

linear

lanceolate

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d0_s10

10

12

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d0_s10

glabrous

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d0_s10

hairy

sparsely

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d0_s10

inflorescence flower corolla

pale-yellow

greenish yellow

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d0_s12

inflorescence flower corolla

7

15

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d0_s12

whitish

usually

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d0_s14

pale-yellow

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d0_s14

reddish-brown

sometimes

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d0_s14

5

6

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d0_s14

chromosome

16

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d0_s14

root taproot

size

thickened

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d0_s1

root taproot

knotty

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d0_s1

root taproot

tuberous

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d0_s1

tissue epidermis armature hair

arrangement

scattered

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d0_s5

inflorescence flower disc floret

4

5

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d0_s11

inflorescence flower disc floret

5

6

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d0_s11

inflorescence flower disc floret

5

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d0_s11

brown

tan

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d0_s13

subcylindric

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d0_s13

subterete

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d0_s13

4

5

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d0_s13

5-10-ribbed

indistinctly

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