Flora of North America species comparison

few to many, erect or spreading;

bark purplish brown, blackish brown, purplish black, or purple, with scattered pale brown lenticels; long and short shoots present;

thorns present; glabrous or hairy young, smooth older;

buds triangular-ovoid, apex obtuse or acute, scale margins glabrous or hairy.

purplish brown or blackish brown, smooth (not verrucose with age).

deciduous or semipersistent, cauline, simple;

stipules persistent, free, reniform or suborbiculate, rarely ovate, leaflike, margins serrate or crenate-serrate;

petiole present;

blade spatulate, obovate, elliptic, or ovate, 3–9 cm, firm or leathery, margins flat, serrate or crenate-serrate, venation pinnate, surfaces glabrous, sometimes midvein abaxially.

stipules of vegetative branches usually reniform or suborbiculate, rarely ovate, to 1 cm, margins serrate, teeth triangular, apex acute;

petiole 5–10 mm;

blade ovate, elliptic, or narrowly elliptic, 3–9 × 1.5–5 cm, base cuneate to broadly cuneate, margins serrate, apex obtuse to acute, abaxial surface glabrous or hairy on veins.

terminal on short branches, appearing lateral on branch as a whole, [2 or]3–5[–10]-flowered, fascicles, glabrous or hairy;

bracts present or absent;

bracteoles present or absent.

present, short, or absent.

opening before or with leaves, perianth and androecium epigynous, 25–50 mm diam.;

hypanthium campanulate, ± constricted at mouth, 4–7 mm diam., exterior glabrous;

sepals 5, reflexed or ascending, suborbiculate or ovate, abaxial surface glabrous, adaxial hairy;

petals 5, white, pink, or red, obovate or ovate to suborbiculate, base short-clawed, apex rounded;

stamens 40–60, equal to or 1/2 length petals;

carpels 5, connate, adnate to hypanthium, indumentum not recorded, styles 2–5, terminal, basally connate 1/3 of length, nearly equal to stamens;

ovules 2.

30–50 mm diam.;

sepals suborbiculate, rarely ovate, 3–4 mm;

petals scarlet red, rarely pinkish or white, ovate or suborbiculate, 13–24 mm;

stamens 40–50, equal to petals.

pomes, sessile, yellow or yellowish green, globose, subglobose, or ovoid, 23–60 mm diam., 5-locular, glabrous; fleshy;

hypanthium persistent;

sepals deciduous;

carpels cartilaginous;

styles deciduous.

yellow or yellowish green, globose or ovoid, 40–60 mm diam. 2n = 34 (China).

10 per locule.

= 17.