Taxon	Illustrator ⠉
	Eriophorum callitrix Eriophorum brachyantherum Eriophorum crinigerum Amphiscirpus nevadensis	John Myers John Myers John Myers John Myers

Herbs, perennial, internally mostly solid, without evident air cavities, cespitose or not, rhizomatous. Culms solitary or not, ± terete, tough, wiry. Leaves all basal; sheaths often disintegrating into fibers; ligules ciliate; blades strongly C-shaped in cross-section to subcylindric, tough, wiry. Inflorescences terminal, often pseudolateral, capitate; spikelets 1–6 (–10); involucral-bracts 1–3, spreading or erect, leaflike. Spikelets 5–20 × 3–5 mm; scales 30–60, spirally arranged, each subtending flower, smooth, glabrous, margins ciliolate. Flowers bisexual; perianth of 1–6 bristles, straight, not longer than achene, retrorsely spinulose; stamens 3; styles deciduous, linear, 2-fid. Achenes planoconvex or unequally biconvex.

Distribution

North America, South America

Discussion

Species 1.

Amphiscirpus was segregated from Scirpus (A. A. Oteng-Yeboah 1974) mainly on the basis of the culm anatomy, including the absence of internal air cavities. It differs from all species of Schoenoplectus in its prominently ciliate ligules. Amphiscirpus was treated within the high Andean Phylloscirpus (J. J. Bruhl 1995) and also as a distinct, monotypic genus (P. Goetghebeur and D. A. Simpson 1991).

Selected References

None.

Lower Taxa

Amphiscirpus nevadensis

"shortened" is not a number.