Flora of North America species comparison

erect, simple or branched, slender, to 80 cm, subglabrous to retrorsely puberulent especially proximally, distal internodes frequently glutinous.

erect, simple proximal to inflorescence, 7–20 cm, with 2–4 pairs of leaves, short retrorse-pubescent proximally, stipitate-glandular and viscid distally, with purple-septate hairs.

2 per node;

blade with margins ciliate toward base, apex acute to obtuse;

basal blades oblanceolate, spatulate;

cauline narrowly oblanceolate to linear, 1–9 cm × 2–15 mm, scabrous or puberulent, rarely glabrous on both surfaces.

basal pseudopetiolate, tufted, blade narrowly oblanceolate, 1.5–5 cm × 1.5–5 mm, base narrowed into long pseudopetiole, retrorse-puberulent on both surfaces;

cauline sessile, connate at base, blade linear to linear-lanceolate or linear-oblanceolate, 1–4 cm × 1.5–4 mm, apex acute.

cymose, open, branches usually ascending, several- to many-flowered, 1-flowered in depauperate specimens.

1(–3)-flowered.

erect, rarely somewhat curved or reflexed near tip, 0.5–2 cm, 1/2–3 times calyx, viscid with stipitate-glandular and purple-septate hairs, hairs less than 1/2 pedicel diam.

mature calyx prominently 10-veined, campanulate to ovate, 5–9 × 3–5 mm, margins dentate, glabrous, veins parallel, with pale commissures;

lobes usually purple, triangular, acute, ca. 1 mm;

petals white, often suffused with dark red, rarely wholly dark red, limb ovate, usually 2-lobed, ca. 2.5 mm, slightly longer than calyx, rarely petals absent, claw narrow, appendages 0.1–0.4 mm;

stamens included;

styles 3;

stigmas included.

10–12 mm diam.;

calyx prominently 10-veined, ellipsoid, somewhat inflated and contracted at mouth to 1/2–2/3 diam., 12–14 × 6–7 mm in flower, 14–17 × 7–8 mm in fruit, to 2 times as long as broad, papery, margins dentate, lobes 5, patent, ca. 2 mm, with broad, membranous margins, apex obtuse, pubescent, hairs short and stipitate-glandular and long purple-septate;

corolla pink to purple, slightly longer than calyx, limb 2-lobed, 4–5 mm, with 2 short (ca. 0.5 mm) appendages;

stamens equaling corolla;

stigmas (4–)5, equaling corolla.

equaling calyx, opening by 6 teeth;

carpophore less than 1 mm.

equaling calyx, opening by 5 recurved teeth, which later split into 10;

carpophore very short or absent.

dull gray-black, reniform, 0.5–0.8 mm diam., finely papillate.

dark brown, reniform, not winged, 0.7–1 mm, papillate-tuberculate.

= 24.