Flora of North America species comparison

erect, unbranched or spreading and branched near base, secondary branches few or none, branching not dichotomous, 5–20(–30) cm.

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

little reduced distally, crowded and often exceeding subtending internode, 10–25 × 1–3 mm;

petiole 0–10 mm;

blade very narrowly elliptic or lanceolate to sublinear.

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

petiole 0–10 mm;

blade narrowly lanceolate.

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

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

sepals 0.6–1.3 mm, reflexed singly;

petals 0.8–1.5mm;

pollen 90–100% fertile;

stigma subglobose, surrounded by anthers at anthesis.

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.

ascending, flattened, 8–17 × 1–2 mm, not constricted between seeds, valve margins entire or minutely undulate, 2 valves remaining attached to septum after dehiscence, septum straight;

pedicel 0–0.5 mm.

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.

24–50, all developing, arranged obliquely to septum and subopposite seeds in adjacent locule, forming 2 even rows in capsule, light brown, 0.7–1.1 × 0.3–0.4 mm, glabrous.

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.

= 14.

= 14.