Flora of North America species comparison

(10–)20–50 cm.

erect or ascending, 1–9(–17) cm underground, strigulose.

sparse or nearly bladeless and rushlike, 2–11 cm;

stipules connate-sheathing and papery-scarious at proximal nodes, mostly distinct and herbaceous at distal nodes, (1–)2–7 mm;

leaflets 3–13 or distal leaves reduced to rachis (phyllodia), blades linear, linear-filiform, linear-elliptic, or elliptic, 5–30 × 0.5–4 mm, apex acute, surfaces strigulose;

terminal leaflet sometimes decurrent and not jointed to rachis.

3–11, blades 2–25(–33) mm.

3–25-flowered, flowers ascending to declined;

axis 2–20(–23) cm in fruit;

bracts 0.5–2.3 mm;

bracteoles 0–2.

incurved-ascending, 1–14 cm.

1–5 mm.

1–8 mm.

7.6–8.4 mm;

calyx 4.2–6 mm, tube 3.4–4.8 mm, lobes 0.4–1.4 mm.

(6.6–)7.6–11.2 mm;

calyx 4–6.3 mm, black-strigose and/or white-strigose, tube 3.4–5.4 mm, lobes triangular-subulate, 0.5–1.4 mm;

corolla ochroleucous, sometimes tinged or veined with purple or pink;

banner abruptly recurved through 90°;

keel (6.2–)6.5–9.4 mm, apex broadly triangular.

linear to narrowly oblong, 13–24(–30) × 3.4–4(–4.5) mm, length 4–8(–10) times width, gradually or abruptly contracted to ± symmetric apex.

pendulous to spreading, green, purple, or mottled, becoming stramineous, straight, linear, narrowly oblong, or oblanceoloid, laterally compressed, bicarinate, 13–50(–53) × 2.3–5 mm, papery, strigose;

sessile.

18–26.

11–26.

0.