Crataegus rivuloadamensis j.b.phipps & o'kennon

Species

Angiosperms > Rosales > Rosaceae > Crataegus

Characteristics

Shrubs or trees, 25–40(–50) dm, wide-branching. Stems: twigs: new growth dark reddish green, pubescent, 1-year old shiny, dark red-brown, 2-years old dark reddish and gray; thorns on twigs ± straight, 1-year old glossy, very dark red-brown, older dark gray, ?shorter conic?, stout, 1.5–2.5(–3) cm. Leaves: petiole length 25–35% blade, eglandular or sparsely sessile-glandular, stipitate-glandular at leaf base, adaxial sulcus densely pubescent; blade ± elliptic or broadly elliptic to rhombic-elliptic, 2–4 cm at anthesis, 4–8 cm mature, base cuneate to narrowly cuneate, lobes 2–4 per side, max LII (0–)5–20(–25)%, lobe apex subacute to broadly cuspidate, margins finely crenate-serrate or serrate, veins 4–6 per side, hardly impressed, apex acute, abaxial surface glabrous or sparsely hairy young, veins appressed-scabrous, adaxial ± densely appressed-scabrous (indumentum persisting). Inflorescences 4–10-flowered; branches ± densely tomentose; bracteoles ± reddish, narrow, margins densely sessile-glandular. Flowers 17–21 mm diam.; hypanthium densely pubescent except sometimes distally; sepal color not recorded, broadly triangular, 3 mm, ?margins greenish?, abaxial surface glabrous, adaxial pubescent; ?petals pale cream?; anthers pink; styles 3–5. Pomes ?1–5(–6) per infructescence?, pale reddish purple, becoming deep red to reddish plum and burgundy, suborbicular to broadly turbinate, 10–12 mm, usually ± densely hairy; sepals ± patent to recurved, ?4–5 mm?; pyrenes 3–5, dorsally strongly grooved, sides plane to very shallowly concave.
Life form annual
Growth form
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 2.5 - 4.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 180 - 730
Germination temperacture (C°) 10 - 15
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Crataegus rivuloadamensis j.b.phipps & o'kennon world distribution map, present in Canada

Identifiers

LSID urn:lsid:ipni.org:names:77095419-1
WFO ID wfo-0001014435
COL ID Z8DK
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Crataegus rivuloadamensis j.b.phipps & o'kennon