Cerro hawthorn – Crataegus erythropoda

Pronunciation: krah-TEE-gus air-ith-row-poh-duh

It is a native shrub or small tree that grows to sixteen feet high, with dense spreading, glabrous branchlets and sharply thorny. Leaves are broadest near the base or middle, dark green, smooth at maturity, and sometimes shallowly lobed. Flowers are white and produced in clusters of five to ten flowers. Fruits are elongated, red to blackish in color.

https://plants.usda.gov/plantguide/pdf/pg_crer.pdf

Shrubs or trees, 5 meters

Stems: twigs: new growth greenish, glabrous, 1-year old dark reddish mahogany; bark on younger 2 – 5 cm thick branches dark gray-brown, sometimes copper-colored; thorns on twigs straight or slightly recurved, 2-years old black, shiny, moderately stout, 2 – 4 cm.

Leaves: petiole 1 – 2 cm; blade rhombic-elliptic, 3 – 5 cm, length 1.6 times width, coriaceous-shining, base cuneate, lobes 3 or 4 per side, lobe apex acute, margins serrate, teeth very short, venation craspedodromous, veins 4 or 5 per side, apex acute, abaxial surface glabrate, adaxial sparsely pilose young.

Inflorescences: 5–10-flowered; branches glandular-punctate; bracteoles few to absent, margins sessile-glandular.

Flowers: 14 – 18 mm diam.; sepals narrowly triangular, 3 – 4 mm, margins glandular-serrate, teeth small, apex acute, glabrous; stamens 10, anthers pink-purple to purple; styles 4 or 5.

Fruits/Pomes: deep red to vinous purple mature, orbicular, 10 mm diam.; sepals reflexed, 4 mm; pyrenes 3 – 5, sides excavated.

http://floranorthamerica.org/Crataegus_erythropoda