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, profusely branched throughout, usually at every other node, branching dichotomous except near base, 10–50 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.

reduced distally, 10–40 × 1–5 mm;

petiole 0–3(–10) mm;

blade very narrowly lanceolate to sublinear.

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

with flowers arising as proximally as first 5–15 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 0.4–0.8 mm, reflexed singly;

petals 0.7–1.2(–1.5) mm;

pollen 90–100% fertile;

stigma subglobose, surrounded by anthers 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 to reflexed, subterete, 3–9 × 0.8–1.2 mm, with inconspicuous constrictions between seeds, valve margins entire or weakly undulate, all valves free from septum after dehiscence, septum straight;

pedicel (3–)5–12 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.

10–30, all developing, arranged ± parallel to septum and in alternating pattern between locules, crowded, overlapping, often appearing to form 2 irregular rows in each locule, brown or gray mottled with brown, 1–1.5 × 0.5–0.7 mm, glabrous.

= 14.

= 14.