Flora of North America species comparison

sessile;

stipules absent;

leaflet 1, blade perfoliate, broadly ovate-elliptic.

petiolate;

stipules persistent, lanceolate to elliptic, 10–20 mm;

petiole 1–5 mm;

leaflets 3, blades cuneate-ovate to spatulate, surfaces glabrate.

1-flowered, axillary, ebracteate.

1-flowered, terminal, foliose, bracteate.

absent.

10–40 mm, bracteolate.

15–17 mm;

calyx 5–7 mm, glabrous;

corolla bright yellow, 13–15 mm.

12–14 mm;

calyx 8–13 mm, lobes longer than tube, glabrate;

corolla yellow, 10–12 mm.

ascending, ovoid, 10–15 × 8–12 mm, abruptly beaked, woody.

ascending, ellipsoid to suborbicular, 10–12 × 8–10 mm, ± woody.

2–4.

2–4.

= 18.

= 18.