Flora of North America species comparison

long-shoot internodes 4–22 mm, sericeous-villous to hirsute-pilose, rarely glabrous, glabrescent; short shoots (1–)2–55 × 1–3.4 mm.

persistent or ± drought-deciduous;

stipules 1–3.8 mm;

petiole 0.4–6 mm;

blade linear, linear-lanceolate, lanceolate, lance-elliptic, or elliptic-ovate, (3–)5–48 × 1–11 mm, stiffly coriaceous, base cuneate, margins weakly to strongly revolute, entire, thickened, apex acute, apiculate-mucronate to obtuse-rounded, abaxial surface initially sericeous or villous (sometimes strongly so), sometimes glabrescent, areoles closely canescent, adaxial sericeous, hirsute, or villous, glabrescent.

1–10 per short shoot;

hypanthial tubes densely to loosely sericeous, villous, or with indument of coiled ascending hairs;

hypanthial cups 1.5–3 × 1.8–3.5 mm;

sepals (3–)5, broadly deltate, 1–2.5 mm, acute-obtuse;

stamens 10–25, anthers 0.7–1.2 mm, glabrous.

6–10.5 × 0.8–1.5 mm; fruiting pedicels 0.3–1.5(–2) mm;

hypanthial tubes (2.6–)3–11 mm;

pedicel/tube ratio (5–)8–18(–28)%;

fruit awns 3–8.5 cm, proximal setae 1.6–3.5 mm.