Flora of North America species comparison

thorns sparse to abundant;

young twigs rusty-hairy (gray-hairy in 1 variation), glabrescent.

thorns sparse;

young twigs tomentose, hairs dense grayish or yellowish (glabrescent 2d year).

stipules 3–8 mm;

petiole 2–5 mm;

blade oblanceolate or obovate, 1.5–6 × 0.5–2.5 cm, base cuneate, margins remotely serrulate or crenulate, often entire proximally, apex obtuse, emarginate, or short-apiculate, surfaces glabrate.

stipules 4–8 mm;

petiole 1–2.5 mm, tomentose;

blade narrowly oblong to slightly oblanceolate, 1.5–5 × 0.4–1 cm, base rounded to cuneate, margins entire (sometimes revolute), apex apiculate, obtuse, or retuse, surfaces gray-tomentose (abaxial remaining gray-tomentose, adaxial glabrescent).

3–4 cm diam.

2–4 cm diam.

2–8 mm, usually glabrate, rarely sparsely appressed brown- or gray-hairy.

1–3 mm, gray-tomentose.

4–12 mm diam.;

hypanthium glabrate, rarely slightly hairy;

sepals triangular, 1–1.5 mm, apex obtuse;

petals suborbiculate, 3–4 mm, apex rounded.

3–8 mm diam.;

hypanthium gray-tomentose;

calyx persistently gray-tomentose, sepals triangular, 1 mm, apex acute;

petals suborbiculate, 3–4 mm, apex rounded.

orange-red to dark red, 3–6 mm diam.;

pedicels 2–10 mm.

red, depressed globose, 4–8 mm diam.;

pedicels 2–5 mm.

= 34 (China).