Crataegus fluviatilis Sargent (Q4281)

taxon name

Crataegus fluviatilis

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taxon authority

Sargent

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taxon rank

species

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taxon status

accepted

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common name

aubépine fluviatile (French)

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Fort Sheridan hawthorn (English)

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VasCan taxon numeric id

8679

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distribution

CA-ON

establishment of distribution

occurrence status

present

native

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CA-QC

establishment of distribution

occurrence status

present

native

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publication

Marie-Victorin, Fr. 1995. Flore laurentienne. 3e éd. Mise à jour et annotée par L. Brouillet, S.G. Hay, I. Goulet, M. Blondeau, J. Cayouette et J. Labrecque. Gaétan Morin éditeur. 1093 pp.

CA-ON

Ont.

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CA-QC

Que.

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US-CT

Conn.

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US-IL

Ill.

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US-ME

Maine

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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-NH

N.H.

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US-NY

N.Y.

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US-RI

R.I.

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US-VT

Vt.

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US-WI

Wis.

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Crataegus ser. Tenuifoliae (Sargent) Rehder

parent taxon

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taxon habit

shrub

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phenology

Flowering May–Jun; fruiting Sep–Oct.

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taxon habitat

old fields

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fencerows

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brush

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woodland margins

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open woods

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elevation

0–500 m

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special status

E

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taxon description fragment

Shrubs or trees, multistemmed, 30–40 (–70) dm.

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d0_s0

thorns on twigs 1-year old shiny, deep brown to blackish, often black-tipped, stout to slender, 2.5–5 cm.

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d0_s2

Leaves: petiole length 30–60% blade, sparsely to densely glandular;

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d0_s3

blade ovate, 3–6 cm, base subcordate, truncate, or rounded to cuneate, lobes 3–6 per side, sinuses shallow to moderately deep, lobe apex acute to acuminate, margins serrate, teeth numerous, small, larger ones conspicuously glandular, particularly at base, smaller ones inconspicuously gland-tipped, veins 4–6 per side, apex acute, adaxial surface densely appressed-scabrous-pubescent young, glabrescent.

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d0_s4

Inflorescences 5–12-flowered;

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d0_s5

branches pubescent;

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d0_s6

bracteoles usually absent (even young), sometimes few to several, often red-tinged, ± linear.

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d0_s7

Flowers 12–17 mm diam.;

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d0_s8

hypanthium glabrous;

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d0_s9

sepals 4–5 mm, margins subentire to weakly serrate, usually eglandular, abaxially glabrous or pubescent;

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d0_s10

stamens 5–10, anthers pink to reddish purple;

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d0_s11

styles 3–5.

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d0_s12

Pomes bright to deep red, suborbicular to ellipsoid, 8–15 mm diam.;

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d0_s13

sepals erose or erect-patent;

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d0_s14

pyrenes 3–5, dorsally shallowly grooved.

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d0_s15

morphology statement

multistemmed

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d0_s0

atypical some measurement

40

70

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d0_s0

30

40

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d0_s0

shrub

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d0_s0

multistemmed

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d0_s0

atypical some measurement

40

70

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d0_s0

30

40

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d0_s0

tree

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d0_s0

leaf petiole

length

glandular

30-60%; sparsely to densely

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d0_s3

leaf blade

ovate

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d0_s4

leaf blade

3

6

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d0_s4

subcordate

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d0_s4

rounded

cuneate

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d0_s4

rounded

cuneate

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d0_s4

inflorescence flower corolla lobe

3

6

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d0_s4

inflorescence flower gynoecium pistil style apex

acute

acuminate

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d0_s4

serrate

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d0_s4

size

smaller

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d0_s4

inflorescence flower gynoecium pistil style apex

acute

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d0_s4

inflorescence

5-12-flowered

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d0_s5

inflorescence branch

pubescent

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d0_s6

presence

absent

usually

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d0_s7

few

several

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d0_s7

red-tinged

often

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d0_s7

arrangement

course

linear

more or less

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d0_s7

inflorescence flower

diameter

12

17

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d0_s8

inflorescence flower hypanthium

glabrous

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d0_s9

inflorescence flower sepal

4

5

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d0_s10

subentire to weakly

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d0_s10

serrate

weakly

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d0_s10

eglandular

usually

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d0_s10

glabrous

abaxially

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d0_s10

pubescent

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d0_s10

inflorescence flower stamen

5

10

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d0_s11

inflorescence flower anther

pink

reddish purple

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d0_s11

inflorescence flower gynoecium pistil style

3

5

1 reference

d0_s12

inflorescence flower sepal

relief

erose

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d0_s14

inflorescence flower sepal

orientation

erect-patent

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d0_s14

fruit pyrene

3

5

1 reference

d0_s15

fruit pyrene

grooved

dorsally shallowly

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d0_s15

reflectance

shiny

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d0_s2

deep

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d0_s2

brown

blackish

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d0_s2

black-tipped

often

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d0_s2

size

stout

slender

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d0_s2

2.5

5

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d0_s2

stem twig

life cycle

old

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d0_s2

inflorescence flower petal venation vein

4

6

1 reference

d0_s4

reflectance

bright

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d0_s13

depth

deep

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d0_s13

red

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d0_s13

suborbicular

ellipsoid

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d0_s13

diameter

8

15

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