Flora of North America species comparison

thickened, woody;

crown, many-branched, woody;

rhizomes and trailing stems to 60 cm.

filiform.

ascending to erect, ± green, 2–20 cm, densely glandular-hairy throughout, internodes of flowering stems 0.2–2 times as long as leaves.

erect to ascending, green, 5–20 cm, stipitate-glandular, often densely so, internodes of all stems 1–3 times as long as leaves.

tightly appressed to spreading, ± evenly spaced, connate proximally, with ± loose, scarious sheath 0.1–0.7 mm;

blade straight to recurved, ± green, flat, prominently 1-veined abaxially, broadly lanceolate to linear, 5–20 × 0.5–1.5 mm, ± rigid, margins rounded, scarious in proximal 1/3–1/4, apex green to purple, acute to acuminate or spinescent, navicular with small mucro or spinescent, dull, stipitate-glandular;

axillary leaves present proximally to throughout.

overlapping proximally, perfoliate proximally, with ± loose, scarious to herbaceous sheath 0.5–1 mm;

blade green, flat, 1-veined, oblanceolate to cuneate (proximal) to oblong-lanceolate to ovate (remaining cauline), 5–30(–35) × 2–4 mm, flexuous, margins not thickened, ± scarious, smooth, apex green to purple, obtuse to abruptly pointed, dull, glabrous;

axillary leaves absent.

(3–)6–30-flowered, open cymes;

bracts lanceolate to subulate, usually scarious.

7–12-flowered, open cymes, or rarely solitary, terminal;

bracts ± lanceolate, herbaceous, sometimes scarious-margined proximally.

0.2–2 cm, stipitate-glandular.

reflexed in fruit, 0.5–2.5 cm, stipitate-glandular.

hypanthium disc-shaped;

sepals 1–3-veined, narrowly lanceolate to lanceolate or ovate (herbaceous portion narrowly lanceolate to lanceolate or ovate), 3–6(–7) mm, not enlarging in fruit, apex often purple, acute to acuminate or spinescent, not hooded, stipitate-glandular;

petals obovate, 0.5–1.6 times as long as sepals, apex rounded, entire.

hypanthium disc-shaped;

sepals obscurely veined, ovate to broadly elliptic (herbaceous portion ovate to broadly elliptic), 3–6 mm, to 7 mm in fruit, apex green or purple, acute to acuminate, not hooded, stipitate-glandular;

petals obovate to oblanceolate, 2–2.5 times as long as sepals, apex rounded, broadly notched.

on stipe ca. 0.1–0.2 mm, ovoid, 5 mm, usually shorter than sepals.

sessile, broadly ellipsoid, 6–7.5 mm, equaling or longer than sepals.

reddish brown to dark brown, oblong-elliptic with hilar notch on 1 end, 1.5–2.7 mm, tuberculate;

tubercles low-rounded.

dark brown to blackish, orbiculate with radicle prolonged into beak, only slightly compressed, 0.7–0.8 mm, echinate with rounded tubercles.