Equisetum subg. Hippochaete

(J. Milde) Baker

Handb. Fern-Allies 3. 1887.

Common names: Scouring rush
Basionym: Undefined subg. Hippochaete J.Milde Bot. Zeitung (Berlin) 23: 297. 1865
Treatment appears in FNA Volume 2.

Aerial stems persisting more than a year (except Equisetum laevigatum), with sunken stomates in single lines on each side of stem valleys; branches generally lacking or few (except E. ramosissimum). Cones sharply pointed at apex (except E. laevigatum).

Distribution

Nearly worldwide

Discussion

The only species of this subgenus in the flora that is regularly branched, bearing several branches per midstem node, is Equisetum ramosissimum. The others, though normally unbranched, with age or injury may develop one or a few branches, usually from the proximal or most distal nodes.

Species 7 (5 in the flora).

Richard L. Hauke +
(J. Milde) Baker +
Undefined subg. Hippochaete +
few +  and lacking +
Scouring rush +
pointed +
0.3 cm3 mm <br />0.003 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Nearly worldwide +
male +  and unisexual +
smaller than female +
distinct +
Handb. Fern-Allies +
hauke1963a +
persisting +
Equisetum subg. Hippochaete +
Equisetum +
subgenus +
toothlike +