Carex viridula subsp. brachyrrhyncha

(Celakovský) B. Schmid

Watsonia 14: 317. 1983.

Common names: Long-stalked yellow sedge
Illustrated
Basionym: Carex flava subsp. brachyrrhycha Celakovský Prodr. Fl. Böhmen. 1: 71. 1867
Treatment appears in FNA Volume 23. Treatment on page 527. Mentioned on page 521, 526.

Culms 2–4.5 cm. Leaves of flowering stems thickened, recurved, shorter to equaling culms, to 3 cm × 1.6–3.5 mm ligules of distal cauline leaves usually obsolete. Inflorescences: proximal pistillate spikes 1–3, contiguous or slightly separate, globose or elliptic, 4–5.5 mm wide; terminal staminate spikes short- or long-pedunculate, 5.1–6.1 × 1.6–2.1 mm. Perigynia dark green to yellowish green, 2.3–2.8 × 1.3–1.5 mm, apex abruptly narrowed into a scabrous or smooth, reflexed beak; beak 0.4–2.1 mm, forming an angle of 5–28° with body. Achenes 1.2–1.4 × 0.9–1 mm.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Lower Taxa

None.

Key

1 Perigynia (2.7–)3.2–4.5 mm; culms to 85 cm; peduncle of staminate spike to 25 mm; North America and Europe. Carex viridula var. elatior
1 Perigynia 2.3–2.8 mm; culms to 5 cm; peduncle of staminate staminate spike to 4 mm; North America. Carex viridula var. saxilittoralis