Flora of North America species comparison

decumbent to scandent.

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 narrowly lanceolate to lanceolate-elliptic, 6–14 × 1–3.3 cm, apex acuminate.

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 exserted, 1–3-flowered;

proximal cyme 2–5-flowered;

spathes pedunculate, falcate, 2.3–4 × 0.5–1.1 cm, apex acuminate;

peduncles 1–2(–4) 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.

blue;

medial stamen anther connective without dark band.

3-locular, 2-valved, 4–6.3 mm.

3-locular, 2-valved.

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

typically only 1–2 developing, dark brown, 2.1–2.8 mm, deeply reticulate.

= 90.