Equisetum ramosissimum Desf., it is a rhizomatous geophyte plants small to medium-sized. Rhizome erect, creeping, or ascending, blackish brown, nodes and roots with few to numerous long yellowish brown trichomes or glabrous. Aerial stem perennial, monomorphic, green, 20-60 cm tall, 1-7 mm in diam. at middle, lower portion of main stem often branched, tufted; internodes 2-10 cm; young whorled branches conspicuous or inconspicuous; main stem 5-20-ridged, ridges arc-shaped abaxially, with a row of tubercles or small light brown cross grains; sheath tubes narrow, up to 1 cm, lower portion grayish green, upper portion usually grayish brown; sheath teeth 5-22, grayish white to light or blackish brown, deltoid, base flat or arc-shaped, margin (sometimes upper part) membranous, caducous or persistent, with conspicuous or inconspicuous stomatal bands. Lateral branches hard, terete, 5-12-ridged; ridge glabrous or with 1 row of tubercles or small pale cross grains; sheath teeth 5-10, upper portion brown, lanceolate, leathery but membranous at margin, usually persistent. Strobilus shortly clavate or ellipsoid, 0.5-2.5 cm, 0.4-0.7 cm in diam. at middle, apex with small acute tip, sessile.
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