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.

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.

petiole 20–50 mm;

blade narrowly to broadly ovate or obovate, 4–12 × 2.3–7 cm, base usually cuneate, rarely rounded, apex abruptly acuminate or cuspidate, abaxial surface yellow-green, papillose, appressed-hairy, adaxial surface dark green, glabrate;

secondary veins 5–6 per side, most arising from basal 1/2.

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.

flat to hemispheric, 3–15 cm diam., 50–100-flowered;

peduncle 30–60 mm;

branches and pedicels yellow-green, turning red in fruit, alternate on central axis, proximal 2–3 orders with minute bracts.

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

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 appressed-hairy;

sepals 0–0.2 mm;

petals cream, 2.5–4 mm.

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.

blue, globose, 5–8 mm diam.;

stone subglobose, laterally compressed, 5–6 × 5–6 × 4 mm, slightly ribbed.

= 44.

= 20.