Flora of North America species comparison

yellow to orange, slender to medium.

yellow-orange, slender.

dense, corymbiform to glomerulate;

bracts at base of clusters 1, at base of pedicels 0 or 1, ovate or ovate-triangular to lanceolate, membranous, margins entire, apex acute.

glomerulate or compact-paniculiform, 15–70-flowered, flowers subsessile;

bracts at base of clusters 1, at base of pedicels 0–2, ovate to lanceolate, membranous, margins entire, apex acuminate to attenuate.

0.5–3(–4.5) mm.

0.2–0.6 mm.

(4 or)5-merous, 1.4–2.5 mm, membranous, corolla lobes sometimes papillate;

calyx yellow to brown, angled, cupulate, equaling corolla tube length, divided 1/2–2/3 its length, ± reticulate, shiny or not, lobes broadly ovate to rhombic, base auriculate, overlapping, forming prominent angles at sinuses, margins entire, midvein not carinate, without multicellular protuberances, apex rounded;

corolla whitish, drying yellow to brown, 1.2–2.2 mm, tube campanulate, 0.7–1.2 mm, not saccate, lobes spreading, triangular-lanceolate, equaling corolla tube length, margins entire, apex acute to acuminate, inflexed;

infrastaminal scales ovate to oblong, 0.7–1.4 mm, equaling or longer than corolla tube length, bridged at 0.3–0.5 mm, rounded, ± uniformly densely fimbriate, 0.15–0.25 mm;

stamens exserted, shorter than corolla lobes;

filaments 0.3–0.4 mm;

anthers 0.2–0.3 × 0.2–0.3 mm;

styles filiform, 0.7–1.1 mm, equaling ovary.

5-merous, 2.5–4 mm, membranous, not papillate;

calyx brownish, campanulate, equaling corolla tube length, divided 1/2–2/3 its length, not reticulate, shiny, lobes oblong, obovate, ovate, or spatulate, bases overlapping, margins entire or finely serrulate-denticulate, midvein not carinate, apex acute to obtuse, each exceeded by hornlike appendage, 0.3–0.6 mm;

corolla creamy white, drying brown, 2.2–3.2 mm, tube campanulate, 1.2–1.6 mm, not saccate, lobes spreading to reflexed, ovate to lanceolate, equaling corolla tube length, each with subapical, hornlike projection, 0.3–0.7 mm, margins entire or irregularly denticulate, apex obtuse, straight;

infrastaminal scales oblong to broadly ovate or rounded, 1.2–1.6 mm, equaling corolla tube length, bridged at 0.5–0.7 mm, sparsely, uniformly short-fimbriate, fimbriae 0.04–0.1 mm;

stamens exserted, shorter than corolla lobes;

filaments 0.3–0.9 mm;

anthers 0.4–0.5 × 0.2–0.3 mm;

styles stout, ± subulate, 0.9–2 mm, longer than ovary.

depressed-globose to ovoid, 1.9–2.4 × 1.6–2.5 mm, not thickened or raised around relatively medium-sized to large interstylar aperture, translucent or not, base ± enveloped by withered corolla, indehiscent.

globose to slightly depressed, 1.8–2.3 × 1–2 mm, not thickened or raised around relatively small interstylar aperture, not translucent or becoming translucent very late, capped by withered corolla, dehiscence circumscissile.

4, angled, subglobose to broadly ellipsoid, 0.9–1.1 × 0.8–1 mm, hilum region subterminal.

1–4, angled, subglobose or ovoid to broadly ellipsoid, 0.7–1.1 × 0.7–0.9 mm, hilum region subterminal.

= 56.