familyCyperaceae
genusCarex
sectionCarex sect. Ceratocystis
speciesCarex viridula
subspeciesCarex viridula subsp. brachyrrhyncha
Carex viridula subsp. brachyrrhyncha
Watsonia 14: 317. 1983.
Common names: Long-stalked yellow sedge
Basionym: Carex flava subsp. brachyrrhycha Celakovský
Revision as of 01:58, 27 July 2019 by FNA>Volume Importer
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.
Distribution
North America, Europe.
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 |