OregonFlora species comparison

erect, 12–80 cm, glabrous or retrorsely puberulent; upper internodes usually viscid.

erect to prostrate.

basal leaves oblanceolate to spatulate, 1–3(6) cm × 3–6(10) mm; upper cauline leaves linear to narrowly oblanceolate, gradually reduced upward.

opposite, pseudoverticillate, whorled, or rarely alternate; simple;

petioles often present;

stipules present or 0.

terminal; open cymes, not 1-sided;

pedicels glabrous.

terminal or axillary cymes; thyrses, or capitula, or flowers 1;

bracts foliaceous, scarious, or absent;

involucel bracts (epicalyx) immediately subtending calyx occasionally present.

bisexual; erect;

calyces ovate to campanulate, not inflated in fruit, 4–9 mm, glabrous, 10-veined, not netted above; pale commissures present;

lobes 1 mm;

tips acute;

petal claws glabrous (or rarely petals absent); appendages 0 or to 0.4 mm;

limbs ~2.5 mm, white to red;

lobes 2;

stamens included;

styles 3, included.

bisexual or occasionally unisexual; radial; hypanthium; when present, urceolate; cup-, disk-, or dish-shaped, sometimes abruptly expanded distally;

sepals 4 or 5; distinct or connate basally or into a cup or tube;

petals (0)4 or 5; distinct;

stamens 1–10; in 1 or 2 whorls, arising from base of ovary, nectariferous disk or hypanthium rim;

staminodes usually 0 or 1–10;

pistils 1;

ovaries superior, 1-locular or rarely 2-locular proximally or 3–5 locular; placentas free-central;

basal, or axile in proximal half;

styles 1–5(6); distinct or connate proximally;

stigmas 2–5(6), often linear along adaxial surface of styles (or branches).

ovoid;

teeth 6;

stalks 1 mm.

capsules or utricles; carpophore sometimes present.

0.5–0.8 mm, gray-black, not winged.

1–150(500), often laterally compressed, brown or black.

=24.