OregonFlora species comparison

alternate, 4–6, 8–17 × 4–10 cm.

simple;

basal, or cauline, alternate; opposite, or whorled, plicate; convolute, conduplicate, cylindric, or flattened;

margins entire, petioled or not;

stipules 0.

elongated, 1–3-flowered.

racemes; panicles; spikes, or rarely cymose;

flowers 1 to many; terminal or lateral, generally with bracts.

dorsal sepal lanceolate to ovate, 3–6 × 1–1.5 cm, green suffused with purple;

lateral sepals connate almost to tip, similar in color and shape to dorsal sepal;

petals linearlanceolate and twisted, 4–7 × 0.3–0.6 cm, purple;

lip 2–3 × 1.2–1.7 cm, white with purple spots inside.

bisexual, usually strongly bilaterally symmetric;

sepals 3, often petaloid;

petals 3, highly modified; central petal modified into lip;

stamens 1 or 2 (rarely 3); opposite lip, fused to style to form column;

pollen generally aggregated into 2–8 pollinia;

ovary inferior, 3-carpellate with 1 or 3 locules;

style fused to anther filaments;

stigma 3-lobed with middle stigma lobe modified into a small beak (rostellum).

capsules.

numerous; minute and dust-like, lacking endosperm.