Eryngium serratum Cav.

Eryngium serratum Cav. Anal. Hist. Nat. 2: 132. 1800
Eryngium Schiedeanum Schleeht. & Cham. Linnaea 5: 206. 1830.
Slender, caulescent, branching, glabrous perennials, 2-8 dm. high, from a fascicle of woody-fibrous roots; basal leaves coriaceous, lanceolate to oblong, 4-15 cm. long, 1-2 cm. broad, long-cuneate at the base, acute or obtuse at the apex, callous-margined, coarsely spinulose-serrate or spinulose-dentate to subpinnatifid, the venation pinnately reticulate; petioles narrowly winged, broadly sheathing at the base, 0.2-2 dm. long, shorter or longer than the blades; cauline leaves few, the upper greatly reduced, sessile, incised or lobed; inflorescence cymose, the heads few, pedunculate, rather large, the flowers numerous; heads greenish, subglobose to ovoid-cylindric, 5-IS mm. long, 6-12 mm. broad; bracts 8-12, foliaceous, rigid, ascending, linear-lanceolate, 5-10 mm. long, 1-2 mm. broad, acute or acuminate, entire or with 1 or 2 spinose teeth, greenish on both sides, shorter than the heads; bractlets subulate, 5-6 mm. long, narrowly scarious-winged at the base, exceeding the fruit; coma wanting; sepals narrowly lanceolate, 2—3 mm. long, mucronate, entire; petals oblong, 1.5-2 mm. long; styles slender, exceeding the sepals; fruit subglobose, 3-5 mm. long, densely covered with appressed, white, lanceolate-acuminate scales, the lateral and calycine larger than the dorsal.
Type locality: "Huanajuato [Guanajuato], Nuevo-Espafia [Mexico]," collector unknown. Distribution: Nuevo Leon and San Luis Potosi to Vera Cruz and Mexico (Pringle 3156,

Eryngium serratum là một loài thực vật có hoa trong họ Hoa tán. Loài này được Cav. mô tả khoa học đầu tiên năm 1800.