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Maryland Checklist - Genus: Cirsium - all-time (Total: 7)
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Show All
Adventive
\n
Coastal Plain only
\n
Endangered (Federal)
\n
Endangered (MD)
\n
Excluded
\n
Exotic
\n
Extinct
\n
Extirpated
\n
Extralimital
\n
G1 (Highly globally rare)
\n
G1G2 (Highly globally rare)
\n
G2 (Globally rare)
\n
G2G3 (Globally rare)
\n
G3 (Globally rare/local)
\n
G3G4 (Globally vulnerable)
\n
G4
\n
G4G5
\n
G5
\n
Garrett only
\n
GH (No known extant occurrences)
\n
GU (Global status uncertain)
\n
Hybrid
\n
In need of conservation
\n
Invasive
\n
Nativity Uncertain
\n
Non-native
\n
Reviewable (MD/DCRC)
\n
S1 (Highly state rare)
\n
S1B (Highly state rare breeder)
\n
S1M (State rare migrant)
\n
S1N (State rare non-breeder)
\n
S1S2 (Highly state rare)
\n
S1S2B (State rare breeder)
\n
S2 (State rare)
\n
S2B (State rare breeder)
\n
S2B (State rare breeder)
\n
S2S3 (State rare)
\n
S2S3B (State rare breeder)
\n
S3 (Watch list)
\n
S3B (State watchlist breeder)
\n
S3S4
\n
S3S4B (State watchlist breeder)
\n
S4SE
\n
SH (Historical)
\n
SHB (State historical breeder)
\n
SR (State rare)
\n
Status Uncertain
\n
SUB (Status uncertain breeder)
\n
SXB (State extirpated breeder)
\n
SXM (State extirpated migrant)
\n
Threatened (Federal)
\n
Threatened (MD)
\n
Undescribed
\n
Vulnerable
\n
Waif
\n
Western MD only
\n
Worcester only
\n
Photos
Common Name
Genus
Species
Records
Category
Family
Order
Class
Kingdom
1
Canada Thistle
Cirsium
arvense
633
Aster Family
Asteraceae
Asterales
Magnoliopsida
Plantae
2
Yellow Thistle
Cirsium
horridulum
var.
horridulum
80
Aster Family
Asteraceae
Asterales
Magnoliopsida
Plantae
3
Pasture Thistle
Cirsium
pumilum
22
Aster Family
Asteraceae
Asterales
Magnoliopsida
Plantae
4
Tall Thistle
Cirsium
altissimum
14
Aster Family
Asteraceae
Asterales
Magnoliopsida
Plantae
5
Field Thistle
Cirsium
discolor
212
Aster Family
Asteraceae
Asterales
Magnoliopsida
Plantae
6
Swamp Thistle
Cirsium
muticum
19
Aster Family
Asteraceae
Asterales
Magnoliopsida
Plantae
7
Bull Thistle
Cirsium
vulgare
332
Aster Family
Asteraceae
Asterales
Magnoliopsida
Plantae
View Bibliography
