Habit: Biennial, perennial herb; taprooted, roots clustered, or rhizomes; generally glabrous, +- spiny.
Stem: decumbent to erect, generally branched.
Leaf: basal rosette, cauline; petioles present or 0; blades linear to triangular-ovate or round, generally pinnately or palmately lobed or dissected (entire), generally sharp-toothed or spine-tipped, net-veined; juvenile leaves linear, segmented.
Inflorescence: heads 1--many in cymes, racemes [panicles]; bracts each generally subtend 1 flower, with scarious membrane enclosing ovary, outer > to >> inner, spiny or not on margins and abaxially; rays, pedicels 0.
Flower: sepals spine-tipped, generally persistent; petals oblong to ovate or oblanceolate, white to blue or purple, tip long; anthers, styles generally green, occasionally blue; ovary tip projection 0.
Fruit: obconic to obovate or narrowly elliptic [round], compressed or not, densely scaly; scales at fruit tip and along juncture of carpels generally larger, longer than on face or base; ribs 0; oil tubes obscure; fruit central axis not obvious.
Seed: face generally flat.
Species In Genus: +- 230 species: America, Eurasia, Australia, New Zealand.
Etymology: (Ancient Greek name used by Theophrastus)
Note: California species variable, intergrading, need study.
Jepson eFlora Author: Robert E. Preston, Michael S. Park & Lincoln Constance
Reference: Marsden & Simpson 1999 Madroño 46:61--64
Unabridged Reference: Sheikh 1983 Madroño 30:93--101Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)Key to Eryngium
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