Flora of North America species comparison

internodes with 2 or 4 raised lines at first, then terete (not lined).

internodes 4-lined at first, then terete.

sessile, subsessile, or petiolate;

blade relatively broad, venation pinnate, tertiary veins densely reticulate, glands punctiform, pale (records of black gland dots are probably all due to fungal attack), intramarginal and laminar.

petiolate, petiole 2–15 mm;

blade narrowly elliptic to narrowly oblong, 30–150 × 10–35 mm, base cuneate, apex rounded, gland dots laminar and intramarginal.

terminal, sometimes also axillary, cymose, 2–15-flowered, or solitary flower, branching dichasial;

bracts and bracteoles relatively small.

interrupted spiciform-cylindric, 3-flowered from terminal node, sometimes with subsessile flowers or pedunculate triads and/or flowering branches from to 8 proximal nodes.

tubular or campanulate at first, expanding to stellate for short time each day;

sepals persistent, 5, distinct or almost so, margins not glandular-ciliate;

petals deciduous, 5, partly imbricate or contorted, pink or flesh-colored, sometimes green-tinged;

stamens persistent, 9, in 3 fascicles, each with 3 stamens;

filaments of each fascicle 1/5–1/2+ connate;

anthers yellow, isodiametric to oblate or shortly oblong, with amber gland on connective;

staminode fascicles 3, alternating with stamen fascicles;

ovary 3-merous;

placentation axile;

ovules relatively numerous on each placenta;

styles distinct, spreading.

7–10 mm diam.;

sepals narrowly oblong to narrowly elliptic or lanceolate, 3–5 × 1–1.5 mm, apex obtuse to rounded;

petals narrowly obovate, 5–7 mm;

stamen fascicles 3–5 mm;

filaments 1/2+ connate;

styles 0.8–1.2 mm.

3-valved, with glandular vittae.

cylindric, 7–12 × 3–4 mm, apex subacute.

narrowly cylindric, carinate;

testa reticulate-foveolate.

0.8–1.1 mm.

= 19.