Contains 9 accepted taxa overall.
Characteristics
Classification
Citation
ERYNGIUM Linnaeus, Sp. Pl. 232. 1753.
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TYPE: Eryngium maritimum Linnaeus Lectotypified by Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 2: 621. 1913.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Eryngium aquaticum | RATTLESNAKEMASTER | Native OBL (NWPL) OBL (DEP) | ||
| Eryngium aromaticum | FRAGRANT ERYNGO | Native FACW (NWPL) | ||
| Eryngium baldwinii | BALDWIN'S ERYNGO | Native FACW (NWPL) FAC (DEP) | ||
| Eryngium cuneifolium | WEDGELEAF ERYNGO; SCRUB ERYNGIUM | Native Rare-State Endangered-US | ||
| Eryngium divaricatum | BALLAST ERYNGO | Not Native | ||
| Eryngium foetidum | SPIRITWEED | Not Native FAC (NWPL) | ||
| Eryngium integrifolium | BLUEFLOWER ERYNGO | Native FACW (NWPL) FACW (DEP) | ||
| Eryngium prostratum | CREEPING ERYNGO | Native FACW (NWPL) FACW (DEP) | ||
| Eryngium yuccifolium | BUTTON RATTLESNAKEMASTER; BUTTON ERYNGO | Native FAC (NWPL) FACW (DEP) |
Identification Key
1. Most cauline leaves unlobed (sometimes the distalmost ones just below inflorescence lobed), toothed, the sinuses <½ the width from the midrib to the blade margin
2
1. Cauline leaves palmately, pinnately, or apically lobed (basal ones often unlobed), the sinuses nearly reaching the midrib or petiole
6
2. Leaf blade margin bristly or prickly, these 2-6 mm long
3
2. Leaf blade margin entire to serrate, any bristle tips <0.6 mm long
5
3. Plant leafy with fascicles of leaves subtending the inflorescence head; leaf margin dentate, the teeth (or lobes) spinose-tipped
3. Plant subscapose, bracts subtending inflorescences highly reduced and scarcely foliaceous; leaf margin straight or nearly so with bristles at intervals
4
4. Leaves mostly 5-10 mm wide, bristles in fascicles of 2-4; involucral bracts linear-lanceolate
4. Leaves mostly 10-30 mm wide, bristles moslty solitary; involucral bracts ovate-lanceolate
5. Leaf blade linear to narrowly lanceolate, 15-50 cm long, the margin entire to obscurely denticulate
5. Leaf blade ovate to oblong-lanceolate, 2-10 cm long, the margin regularly crenate to serrate
6. Stems prostrate or weakly decumbent; inflorescence mostly solitary and axillary
7
6. Stem erect to ascending, only basally decumbent; inflorescence mostly terminal and numerous
8
7. Stem decumbent basally, and leafy nearly throughout; leaves primarily pinnately lobed,
7. Stem erect, leafy primarily at the base and strongly reduce distally; leaves primarily apically lobed
8. Cauline leaves pinnatifid or pinnatisect; inflorescence heads 4-8 mm wide
8. Cauline leaves mostly ternately to palmately lobed or dissected; inflorescence head 2.5-4.5 mm wide
9
9. Inflorescence head subhemispheric, sublglobose, to ovoid, the involucral bracts usually not or barely laterally exceeding the basal flowers, the flowers exceeded by the subtending bracteoles
9. Inflorescence head elliptic to subcylindric, the involucral bracts usually laterally exceeding the basal flowers, the flower subequal to the subtending bracteole
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| Atirsita | Atirsita Rafinesque, New Fl. 4: 36. 1838 ("1836"). | TYPE:Non designatus. | |
| Klonion | Klonion (Rafinesque) Rafinesque, Good Book 56. 1840. | BASIONYM: Strebanthus Rafinesque, subg. Klonion Rafinesque, New Fl. 4: 35. 1838 ("1836"). | TYPE: Non designatus. |
| Reilia | Reilia Steudel, Syn. Pl. Glumac. 2: 311. 1855. | TYPE: Reilia eryngioides Steudel 1855. | |
| Strebanthus | Strebanthus Rafinesque, Bull. Bot. (Geneva) 1: 218. 1830. | TYPE: Strebanthus auriculatus Rafinesque | |
| Streblanthus | Streblanthus Rafinesque, Atl. J. 1: 149. 1832. | TYPE: Streblanthus auriculatus Rafinesque |