Flora of North America species comparison

erect, green, 6–22 cm, appressed-hairy;

nodes 4–6, internodes progressively longer distally;

branches only at distalmost node, much shorter than distal internodes so stems appear unbranched.

erect, green, 5–22 cm, appressed-hairy;

nodes 4–7, internodes only slightly longer distally;

branches at distal 1–3 nodes, ca. as long as distal internodes.

at proximal 2–4 nodes nonchlorophyllous, opposite, ± scalelike, caducous (rarely chlorophyllous at 3d node from apex but much smaller than more distal leaves), at 2d node from apex nonchlorophyllous proximally, chlorophyllous distally, opposite, well developed, persistent, at distalmost node chlorophyllous, appearing to be in whorl of 6, well developed, persistent;

distalmost leaves much bigger than those at 2 more proximal nodes;

petiole 0–3.4 mm;

blade ovate to elliptic, 3.5–8 × 0.9–4 cm, apex acute or short acuminate, abaxial surface pale green, hairs sparsely appressed-hairy, adaxial surface green, appressed-hairy;

secondary veins 3 per side, all arising from proximal 1/2.

at basal node nonchlorophyllous, opposite, scalelike, caducous, at remaining nodes chlorophyllous, opposite, well developed, persistent;

distalmost leaves similar in size to those at 2 more proximal nodes;

petiole 0–7.5 mm;

blade ovate or oval, 1.3–4 × 0.7–2.8 cm, apex broadly acute or obtuse, abaxial surface pale green, moderately appressed-hairy, adaxial surface bluish green, appressed-hairy;

secondary veins 3 per side, all arising from near base, occasionally distalmost vein bifurcating in basal 1/5.

20–40-flowered;

peduncle 13–30 mm;

primary branches 0–2 mm;

bracts greenish white or white, often red-tipped, unequal, 2 ovate, 21–30 × 12–13 mm, 2 suborbiculate, 17–1.9 × 13–16 mm, apex acuminate.

5–17-flowered;

peduncle 8–20 mm;

primary branches 0–0.4 mm;

bracts white, often red- or purple-tinged, ± equal, ovate, 8–12 × 4–7.5 mm, apex slightly acute.

0.4–1.6 mm, sparsely appressed-hairy or glabrous.

0.7–1.5 mm, moderately appressed-hairy proximally, densely at base of hypanthium.

hypanthium cream to mottled purple, 1.2–2 mm, densely appressed-hairy;

sepals mottled purple and cream, 0.1–0.4 mm, apex rounded or acute, thick, sparsely hairy on margin, densely glandular;

petals cream proximally, purple distally, 1.5–1.8 mm, apical awn 0.4–0.6 mm;

nectary dark purple or black.

hypanthium deep purple, 1–2 mm, very sparsely appressed-hairy;

sepals deep purple, 0.2–0.5 mm, apex acute, thick, densely hairy on margins, densely glandular;

petals purple, 1.2–1.5 mm, apical awn 0.5 mm;

nectary purple or black.

10–20 per inflorescence, red, globose, 6–8 mm;

stone globose or subglobose, 2.7–3.4 × 2.1–3.4 mm, longitudinally grooved, apex slightly pointed.

3–8 per infructescence, red, globose, 5–8 mm;

stone usually globose, 2.1–3.4 mm diam., longitudinally grooved, apex rounded.

= 44.

= 22.