OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Apiales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Eryngium yuccifolium var. yuccifolium   FAMILY Apiaceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Eryngium yuccifolium var. yuccifolium   FAMILY Apiaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 140-04-003a:

Eryngium yuccifolium var. yuccifolium   FAMILY Apiaceae

SYNONYMOUS WITH (MISAPPLIED) Manual of the Southeastern Flora (Small, 1933, 1938)

Eryngium aquaticum

 

COMMON NAME:
Northern Rattlesnake-master, Button Snakeroot


         To see larger pictures, click or hover over the thumbnails.

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm190414_7423

April    Oconee County    SC

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

Alan S. Weakley    asw_622591142844468

May    Granville County    NC

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm0505s_10

May    Williamsburg County    SC

Stiff, swordlike, spiny-margined, parallel-veined basal leaves, per Wildflowers of the Southern Mountains (Smith, 1998).

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm0505s_11

May    Williamsburg County    SC

An anomaly in having elongate & parallel-veined leaves, like the monocots, per Wildflowers of the Southern Mountains (Smith, 1998).

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm070505_011

May    Mecklenburg County    NC

Charlotte Mecklenburg McDowell Piedmont Prairie Restoration

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm220527_8156

May    Oconee County    SC

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

Alan S. Weakley    asw_10216397275900539

June        

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm0506j_11

June    Oconee County    SC

Bractlets ovate or broadly lanceolate, prominent, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm140614_955

June    Oconee County    SC

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm0307j_13

July    Buncombe County    NC

NC Arboretum

Newly-opened flowers shed pollen, later stigmas spread and become receptive, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont (Spira, 2011).

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm0507l_21

July    Oconee County    SC

Tiny flowers in spherical heads almost 1" across, in wide-branching umbels, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm150712_485

July    Pickens County    SC

Table Rock State Park

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm150712_488

July    Pickens County    SC

Table Rock State Park

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm150712_489

July    Pickens County    SC

Table Rock State Park

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm220702_8874

July    Oconee County    SC

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

JK Marlow    jkm210806_2433

August    Spartanburg County    SC

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

Richard and Teresa Ware    rtw_eryngium_yuccifolium

August        

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

Sam Pratt    sbp_3395

September    Spartanburg County    SC

In cultivation

Larger leaves > 1.5 cm wide; marginal bristles of leaves solitary, per Weakley's Flora (2023).

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

Sam Pratt    sbp_3398

September    Spartanburg County    SC

In cultivation

image of Eryngium yuccifolium var. yuccifolium, Northern Rattlesnake-master, Button Snakeroot

Patrick D. McMillan    pdmeyuccifolium_scotts

Month Unknown    Williamsburg County    SC

Bracts & bractlets lanceolate, sharp, not extending beyond flower heads, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Eryngium yuccifolium var. yuccifolium   FAMILY Apiaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Eryngium yuccifolium var. yuccifolium   FAMILY Apiaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 140-04-003a:
Eryngium yuccifolium var. yuccifolium   FAMILY Apiaceae

SYNONYMOUS WITH (MISAPPLIED) Manual of the Southeastern Flora (Small, 1933, 1938)
Eryngium aquaticum

 

Find by SCIENTIFIC NAME:

1871

Forb
Perennial

Habitat: diabase barrens and glades, olivine barrens, pine savannas, pine flatwoods over loamy or clay soils, prairies, other open sites with at least periodic moisture, generally in sites showing some prairie affinities, per Weakley's Flora

Native to the Carolinas & Georgia

Uncommon

map
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.

IS THE PLANT "ARMED"?
Leaf margins weakly spinose

LEAVES:
Simple
Alternate

FLOWER:
Summer
White/ Greenish
5-merous
Inferior ovary

Flowers in compact heads

FRUIT:
Summer
Schizocarp of two mericarps

 

TO LEARN MORE about this plant, look it up in a good book!



 


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