Flora of North America species comparison

1–5, terminal from caudex, erect or nearly so.

2–10, terminal from caudex, decumbent to erect.

cauline, ± evenly spaced;

blade widely ovate to elliptic, 1.5–4 cm × 8–22 mm, apex obtuse.

cauline, ± evenly spaced;

blade elliptic to orbiculate, 1–6 cm × 7–38 mm, apex obtuse to acute.

solitary flowers or occasionally a terminal pair.

solitary flowers or 2–5-flowered heads, sometimes with additional flowers at 1–3 nodes.

calyx 8–12 mm, tube cleft to base or nearly so into 2 spathaceous segments, lobes elliptic to ovate-lanceolate, 0.5–5 mm, margins not ciliate;

corolla bright blue, campanulate, open, 30–38 mm, lobes widely ovate-triangular, 6–11 mm, free portions of plicae spreading, low-triangular, less than 1 mm, notched at apex, otherwise entire;

anthers distinct.

calyx 17–35 mm, lobes lance-elliptic, 10–14(–20) mm, margins not ciliate;

corolla deep blue, campanulate, open, 35–50 mm, lobes spreading, oblong-obovate to orbiculate, 7–14 mm, free portions of plicae divided nearly to base into 5–20 threadlike, often crisped segments;

anthers distinct.

not winged.

winged.