Flora of North America species comparison

procumbent to semierect, slightly to moderately branched, elongate, sometimes reddish at base and nodes, glandular-pubescent, viscid.

prostrate, much branched, forming loose mats, elongate, densely glandular-pubescent, viscid.

petiole 0.5–8 cm;

blade ovate to triangular or lanceolate, 3–12 × 1–8 cm, margins entire to subsinuate and slightly undulate, adaxial surface glandular-pubescent, abaxial surface more densely and longer pubescent, or sometimes villous.

petiole 2–4.5 cm;

blade elliptic-oblong to rhombic-ovate, 1–2.5 × 0.6–1.5 cm, margins entire to repand and ± undulate, surfaces glandular-puberulent.

peduncle longer than subtending petiole;

bracts linear-lanceolate to oval-ovate, 7–25 × 2–12 mm, scarious, glandular-puberulent to short villous;

flowers 30–80.

peduncle longer than subtending petiole;

bracts lanceolate to elliptic, 3–5 × 1–3 mm, papery, puberulent to glandular-pubescent;

flowers 15–35.

tube greenish to reddish purple, 10–25 mm, limb white, (2–)6–10 mm diam.

tube greenish, 7–12 mm, limb greenish white, 4–6 mm diam.

winged or not, fusiform and appearing deeply grooved when wingless, when wings not distorted, fruit ± cordate in profile, tapered at base, with prominent beak in broad notch at apex, 5–12 × 2.5–7 mm, indurate, rugose veined or, if wings distorted, fruit ± rhombic in profile and tapered at both ends, or obdeltate and truncate at apex, with prominent beak;

wings 4–5, thick, narrow, not dilated at apex, cavities extending throughout;

peripheral fruits often distorted, S-shaped in lateral view.

biturbinate, tapered at both ends, ± rhombic or fusiform in profile, 4–6 × 2.5–4.5 mm, indurate;

wings reduced, appearing as 5 prominent lobes near middle of fruit;

peripheral fruits not or only slightly distorted.