Flora of North America species comparison

tuberous.

decumbent to scandent.

erect to ascending.

blade narrowly lanceolate to lanceolate-oblong, lanceolate-elliptic or ovate, 1.5–14 × 0.5–3.3 cm, margins scabrous, apex acute to acuminate, glabrous.

blade linear to linear-lanceolate, 4–15 × 0.4–1 cm, apex acuminate, glabrous to puberulent.

distal cyme 1–several-flowered, usually exserted;

spathes solitary, bright green, without contrasting veins, pedunculate, usually distinctly falcate, (0.5–)0.8–4 × 0.4–1.2(–1.4) cm, margins distinct, glabrous or scabrous, sometimes also sparsely ciliate or ciliolate basally, apex usually acuminate, usually glabrous or nearly so;

peduncles 0.5–2(–4) cm.

distal cyme usually 1-flowered, exserted;

spathes solitary, green, often suffused and/or striped with purple, pedunculate, falcate or not, 2.5–8 × 0.7–1.7 cm, margins distinct, scabrous, not ciliate, apex acuminate, glabrous to puberulent;

peduncles 1.5–9.5 cm.

bisexual and staminate;

petals all blue (rarely all lavender), proximal petal smaller;

medial stamen anther connective usually with transverse band of violet;

staminodes 2–3;

antherodes yellow, medial often absent or vestigial, cruciform.

bisexual and staminate;

pedicels puberulent;

petals dark blue, proximal petal somewhat smaller;

staminodes 3;

antherodes yellow, cruciform.

3-locular, 2-valved, 4–6.3 mm.

3-locular, 2-valved, 5–6 mm, apiculate.

5 (or less through abortion), brown, 2–2.8(–3.2) × 1.4–1.8 mm, deeply reticulate.

5, brown, 2.2–2.7 × 1.7–2.2 mm, rugose, pitted.