Crataegus lumaria

Ashe

J. Elisha Mitchell Sci. Soc. 19: 25. 1903.

Endemic
Synonyms: Crataegus dodgei var. lumaria (Ashe) Sargent C. jackii Sargent
Treatment appears in FNA Volume 9. Treatment on page 604. Mentioned on page 596, 602.

Shrubs or trees, 50 dm. Stems: twigs: new growth often ± reddish young, glabrous, 1-year old gray-brown, older dull gray; thorns on twigs ± recurved, 1-year old shiny, dark brown or black, older gray, slender, 2.5–7 cm. Leaves: petiole length 40–60% blade, glabrous, sparsely to densely minutely glandular; blade green, broadly rhombic to rhombic-ovate, or narrowly ovate to broadly elliptic, 2–4(–5) cm, thin, base rounded to cuneate, lobes 3 or 4 per side, sinuses shallow, lobe apex acute, margins serrate, veins 4–6 per side, apex acute to obtuse, abaxial surface glabrous, adaxial glabrate young, soon glabrescent. Inflorescences 6–15-flowered; branches pilose; bracteoles usually hyaline, linear, membranous, margins of proximal bracteoles usually stipitate-glandular. Flowers 13–18 mm diam.; hypanthium glabrous; sepals narrowly triangular, 5 mm, margins entire, glandular; stamens 10, anthers ivory; styles 2 or 3. Pomes yellowish, dull orange, or reddish, suborbicular, 7–12 mm diam., glabrous; sepals reflexed; pyrenes 2 or 3. 2n = 68.


Phenology: Flowering May; fruiting Sep–Oct.
Habitat: Brush, fallow pastures
Elevation: 30–300 m

Distribution

V9 1039-distribution-map.jpg

Ont., Que., Mich., N.Y., Wis.

Discussion

Crataegus lumaria is sporadic through much of its range; it is locally common in southern Ontario.

Crataegus lumaria is much like a hairy-inflorescence form of C. dodgei. The disjunct C. jackii is a form with particularly hairy, suborbiculate leaves and larger flowers (to 20 mm).

Selected References

None.

Lower Taxa

None.
... more about "Crataegus lumaria"
James B. Phipps +
Crataegus sect. Rotundifoliae +
Ont. +, Que. +, Mich. +, N.Y. +  and Wis. +
30–300 m +
Brush, fallow pastures +
Flowering May +  and fruiting Sep–Oct. +
J. Elisha Mitchell Sci. Soc. +
Crataegus dodgei var. lumaria +  and C. jackii +
Crataegus lumaria +
Crataegus (sect. Coccineae) ser. Rotundifoliae +
species +