Flora of North America species comparison

erect, usually unbranched near base, branched at each of several nodes proximal to first flower, less branched distally, branching subdichotomous, 15–100 cm.

erect or spreading, branched mostly proximally, secondary branches few or none, branching not dichotomous, (5–)10–40 cm.

much reduced distally, 20–75 × 1–6 mm;

petiole 0–10 mm;

blade narrowly lanceolate.

little reduced distally, crowded, 10–25 × 1–3 mm;

petiole 0–5 mm;

blade narrowly lanceolate or elliptic to sublinear.

with flowers arising as proximally as first 10–20 nodes from base.

with flowers arising as proximally as first 1–3 nodes from base.

sepals 3–6 mm, reflexed singly or in pairs;

petals 4–8 mm;

pollen 90–100% fertile;

stigma hemispheric, usually exserted beyond anthers of longer stamens at anthesis.

sepals 0.8–1.4 mm, reflexed singly or in pairs;

petals 1.3–1.8 mm;

pollen 90–100% fertile;

stigma subglobose, surrounded by anthers at anthesis.

ascending or reflexed, subterete, 4–16 × 1–1.5 mm, with constrictions between seeds, valve margins undulate, all valves free from septum after dehiscence, septum sinuous;

pedicel 3–12 mm.

ascending, flattened, 10–15 × 0.8–1.4 mm, not constricted between seeds, valve margins entire or slightly undulate, all valves free from septum after dehiscence, septum straight;

pedicel 0.4–2 mm.

4–10(–13), all developing, arranged ± parallel to septum and in alternating pattern between locules, adjacent seeds not overlapping, well spaced from each, forming a single row in capsule, brown or gray mottled with brown, 1.2–2.3 × 0.6–1 mm, glabrous or puberulent.

(10–)14–34, all developing, arranged obliquely to septum and subopposite seeds in adjacent locule, forming 2 even rows in capsule, light to dark brown, 0.8–1 × 0.3–0.5 mm, glabrous or densely puberulent.

= 14.

= 28.