Flora of North America species comparison

yellow-orange, medium.

orange, medium.

dense to loose, spiciform or paniculiform, commonly originating endogenously;

bracts at base of clusters 1 or 2, at base of pedicels and/or flowers 0 or 1, ovate, membranous, margins entire or serrulate, apex obtuse to acute.

loose to compact, glomerulate or corymbiform;

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

0–1 mm.

0.8–4(–5) mm, sometimes papillate.

(3 or)4(or 5)-merous, 2–3 mm, membranous, not papillate;

calyx yellow-brown, shallowly cupulate, 1/2 corolla tube length, divided 2/3 its length, not reticulate, not shiny, lobes oblong-ovate, bases slightly overlapping, margins entire or serrulate, midvein not carinate, apex obtuse;

corolla white, drying creamy white, 1.8–2.8 mm, tube cylindric-campanulate to cylindric, 1.1–2.2 mm, not saccate, lobes spreading, ovate, 1/3–1/2 corolla tube length, margins entire, apex obtuse, straight;

infrastaminal scales oblong, rounded, 0.9–1.7 mm, shorter than to equaling corolla tube length, bridged at 0.2–0.4 mm, sparsely fimbriate, more densely distally, fimbriae 0.1–0.3 mm;

stamens included to slightly exserted, equaling corolla lobes;

filaments 0.2–0.4 mm;

anthers 0.2–0.4 × 0.2–0.4 mm;

styles filiform or narrowly terete, (0.6–)1–2 mm, equaling or longer than ovary.

5-merous, 2.5–3.8 mm, membranous, perianth and ovary papillate;

calyx yellow to reddish brown, cupulate, ± equaling corolla tube length, divided 1/2–2/3 its length, ± reticulate, shiny, lobes ovate-triangular, bases not overlapping, margins entire, midvein not carinate, without multicellular protuberances, apex obtuse to subacute;

corolla white, drying yellow to reddish brown, 1.4–3.4 mm, tube campanulate, later globose, 1.1–1.8 mm, saccate between lines of stamen attachments, lobes spreading to reflexed, triangular, equaling corolla tube length, margins entire, apex acute to acuminate, inflexed;

infrastaminal scales ovate to spatulate, 1.2–2 mm, equaling or longer than corolla tube length, bridged at 0.3–0.5 mm, rounded, uniformly densely fimbriate, fimbriae 0.3–0.7 mm;

stamens exserted, shorter than corolla lobes;

filaments 0.4–0.7 mm;

anthers 0.4–0.7 × 0.4–0.5 mm;

styles filiform, 0.9–1.6 mm, equaling or longer than ovary.

depressed-globose to globose, 2.5–3.2(–4) × 2–4 mm, not thickened or raised around relatively small interstylar aperture, not translucent, capped by withered corolla, indehiscent.

depressed-globose to depressed, 1.5–2.8 × 2.1–3.5 mm, not thickened or raised around relatively mid-sized to large interstylar aperture, not translucent, 1/2–2/3 of base enveloped by withered corolla, indehiscent.

1 or 2, obcompressed, broadly ovoid, 1.4–2 × 1.3–1.4 mm, hilum region terminal.

2–4, angled, subglobose to broadly ellipsoid, 0.9–1.1 × 0.8–1 mm, hilum region subterminal.

= 60.