Flora of North America species comparison

erect, spreading, or creeping, (much-branched);

twigs glabrous or hairy.

persistent, whorled;

petiole present;

blade coriaceous, margins ciliate, prickled, or glabrous.

in whorls of 3;

petiole 0.1–0.3 mm;

blade linear-lanceolate, flat to compressed-triangular in cross section, 2.5–5 × 0.3–0.6 mm, margins strongly revolute, sparsely prickled, surfaces glabrous.

terminal or axillary, umbels, racemes, or panicles, 10–30-flowered;

perulae absent; (bracteoles 2–3).

terminal racemes, ellipsoid, (1–)2–4(–10) cm.

2–3 mm, shortly hairy.

bisexual, radially symmetric;

sepals 4–5, distinct, (shorter than petals);

petals 4–5, connate nearly their entire lengths [connate ca. 1/2 their lengths], corolla persistent, campanulate;

stamens 10, included or exserted; (filaments glabrous);

anthers with or without awns, dehiscent through narrowly oblong, subterminal pores;

ovary pseudo-10-locular;

style (slender, straight), included or exserted, (glabrous);

stigma filiform, obconic, or capitate.

calyx lobes deltate, 2.5–3 × 0.8–1 mm, margins denticulate, apex subacute, glabrous;

corolla bright reddish purple, campanulate, 5–6 mm, lobes broadly deltate, 0.5 mm, apex rounded;

stamens 10;

filaments 3 mm;

anthers awned, ca. 0.7 mm, awns 2, basal, 2–3-fid, 0.2–0.3 mm;

ovary glabrous;

style ca. 4 mm;

stigma slightly exserted, slender, capitate.

capsular [drupaceous], ellipsoid, dehiscence loculicidal [indehiscent].

1–2 mm, glabrous.

ca. 10, ellipsoid to obovoid, not winged, not tailed;

testa reticulate or foveolate.

obovoid, 0.7 × 0.4 mm, finely reticulate.

= 12.

= 24.