Lactuca graminifolia

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Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Species Distribution Map
Family:ASTERACEAE
Species:Lactuca graminifolia Michx.
Common Name:Grassleaf Lettuce; Coastal Plain Lettuce
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Biennial
Category:Vascular
USDA Symbol:LAGR
Plant Notes:Grassleaf Lettuce is a native biennial in the Sunflower family (Asteraceae). It is found primarily in the southern half of Alabama. Grassleaf Lettuce grows in scrub oak woods, in pine woods, on roadside banks, and in disturbed areas. It is a biennial from a tap root. Stems are green or purplish in color, up to 3 feet in height, and exude a milky white latex sap when injured. Leaves are basal and cauline. Basal leaves form a rosette during the first year of growth. They usually persist through flowering. Cauline leaves are sessile, clasping, alternate, and reduced in size upwards. Leaves are spathulate to linear. The margins are entire or rarely denticulate. Flowers are produced in heads. The heads are arranged in paniculiate arrays. Each head has 15-20 ray flowers and no disc flowers. Flower color ranges from purple through blue, to pink and almost white. The fruit is an achene with a filiform beak and white pappus. Grassleaf Lettuce is a relative of the common garden Lettuce (Lactuca sativa Linnaeus). Grassleaf Lettuce is usually not considered palatable because the milky sap is very bitter.--A. Diamond
Taxonomic Notes:**
Status:Native, FACU (NWI)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyASTERACEAE - Aster family
Genus Lactuca
Species Lactuca graminifolia Michx. - Grassleaf Lettuce; Coastal Plain Lettuce

Citation

Citation Lactuca graminifolia Michaux, Fl. Bor.-Amer. 2: 85. 1803.
Basionym: **
Type: USA: SOUTH CAROLINA:

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Lactuca elongata Lactuca elongata Muhlenberg ex Willdenow, var. graminifolia Chapman, Fl. South. U.S. 252. 1860. "Florida, and northward",

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Baldwin, Bullock, Butler, Calhoun, Chilton, Choctaw, Clarke, Coffee, Covington, Cullman, Dale, Geneva, Henry, Houston, Mobile, Monroe, Montgomery, Pike, Russell, Winston

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AMAL, AUA, JSU, TROY, UNA, USAM, UWAL

Range of years during which specimens were collected: 1869 - 2021

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
USAM000002498 Mobile 23 Apr 1976 LeLong, Michel G.
9162		 USAM
Lactuca graminifolia Michaux
TROY000034770 Butler 29 Apr 2012 Diamond, Alvin R.
22989		 TROY
Lactuca graminifolia Michaux
UWAL0057805 Winston 30 May 2021 Spaulding, Daniel D.
16599		 UWAL
Lactuca gramminifolia Michx.
TROY000033103 Covington 08 Jul 2009 Hansen, Curtis J.
4075		 TROY
Lactuca graminifolia Michaux
ALNHS00002661 Clarke 10 Jun 2014 Horne, Howard E.
SWS-277		 ALNHS
Lactuca graminifolia Michx.
UNA00027573 23 Jun 1895 Mohr, Charles
s.n.		 UNA
Lactuca graminifolia Michx. var. graminifolia
UWAL0011397 Bullock 24 May 2012 Dykes, Bailee
767		 UWAL
Lactuca graminifolia Michaux
TROY000002438 Dale 06 Jun 2000 Woods, Michael
8110		 TROY
Lactuca graminifolia Michaux
UWAL0043272 Baldwin 08 Sep 2006 Larsen, Harry S.
1547		 UWAL
Lactuca graminifolia Michx.
AUA000036700 Covington 15 Aug 2011 HANSEN, CURTIS J.
5176		 AUA
LACTUCA GRAMINIFOLIA MICHX.
UNA00048023 Cullman 16 Aug 1886 Mohr, Charles
s.n.		 UNA
Lactuca graminifolia Michx. var. graminifolia
UWAL0049105 Bullock 27 May 2016 Horne, Howard E.
3248		 UWAL
Lactuca graminifolia Michaux
AUA000040480 Covington 31 May 2012 HANSEN, CURTIS J.
5593		 AUA
LACTUCA GRAMINIFOLIA MICHX. VAR. GRAMINIFOLIA
UWAL0043271 Baldwin 07 May 2001 Larsen, Harry S.
695		 UWAL
Lactuca graminifolia Michx.
AUA000024832 Covington 21 May 2009 HANSEN, CURTIS J.
4075		 AUA
LACTUCA GRAMINIFOLIA MICHX.
AUA000036713 Covington 15 Aug 2011 HANSEN, CURTIS J.
5176		 AUA
LACTUCA GRAMINIFOLIA MICHX.
TROY000002440 Pike 19 Jun 2005 Diamond, Alvin R.
15496		 TROY
Lactuca graminifolia Michaux
ALNHS00006205 Russell 17 May 2019 Barger, T. Wayne
UFW#106		 ALNHS
Lactuca graminifolia Michx.
TROY000035419 Russell 22 Jun 2012 Diamond, Alvin R.
23119		 TROY
Lactuca graminifolia Michaux
UWAL0016708 Montgomery 01 Jun 2014 Diamond, Alvin R.
25134		 UWAL
Lactuca graminifolia Michaux
TROY000039263 Montgomery 01 Jun 2014 Diamond, Alvin R.
25134		 TROY
Lactuca graminifolia Michaux
TROY000045151 Geneva 20 Apr 2017 Byrd, Cameron
1043		 TROY
Lactuca graminifolia Michx
TROY000002437 Dale 06 Jun 2000 Pennington, Tiffany
762		 TROY
Lactuca graminifolia Michaux
AUA000005265 Pike 18 Jun 1995 DIAMOND, JR., ALVIN R.
9598		 AUA
LACTUCA GRAMINIFOLIA MICHX.
JSU116095 Calhoun 15 Jun 1982 Whetstone, R. David
11287		 JSU
Lactuca graminifolia Michaux
UNA00048024 Mobile 02 May 1869 Mohr, Charles
s.n.		 UNA
Lactuca graminifolia Michx.
AMAL00014603 Geneva 10 May 2005 Kral, Robert
96366		 AMAL
Lactuca graminifolia Michx. var. graminifolia
USAM000002500 Mobile 23 Apr 1976 LeLong, Michel G.
9173		 USAM
Lactuca graminifolia Michaux
ALNHS00004564 Bullock 20 Jun 2016 Barger, T. Wayne
WLE-110		 ALNHS
Lactuca graminifolia Michx.
UWAL0017691 Houston 23 Apr 2015 Diamond, Alvin R.
26197		 UWAL
Lactuca graminifolia Michaux
ALNHS00000844 Monroe 05 Jul 2011 Barger, T. Wayne
RH-277		 ALNHS
Lactuca graminifolia Michx.
AUA000005264 Henry 22 May 1988 DIAMOND, JR., ALVIN R.
4833		 AUA
LACTUCA GRAMINIFOLIA MICHX.
AUA000005266 Pike 17 May 1988 DIAMOND, JR., ALVIN R.
4790		 AUA
LACTUCA GRAMINIFOLIA MICHX.
AUA000005263 Coffee 26 Apr 1992 DIAMOND, JR., ALVIN R.
8174		 AUA
LACTUCA GRAMINIFOLIA MICHX.
TROY000002441 Pike 29 Apr 2002 Diamond, Alvin R.
13109		 TROY
Lactuca graminifolia Michaux
TROY000002436 Coffee 03 May 2000 Martin, Brian H.
660		 TROY
Lactuca graminifolia Michaux
TROY000022195 Chilton 27 Jul 2005 Diamond, Alvin R.
15596		 TROY
Lactuca graminifolia Michaux
TROY000002439 Dale 06 Jun 1997 Rundell, Hannelore
259		 TROY
Lactuca graminifolia Michaux
AUA000005262 Choctaw 21 Jun 1994 CROUCH, VIRGINIA E.
1038		 AUA
LACTUCA GRAMINIFOLIA MICHX.
ALNHS00004889 Baldwin 10 May 2017 Barger, T. Wayne
SP#3036		 ALNHS
Lactuca graminifolia Michx.
TROY000042272 Houston 23 Apr 2015 Diamond, Alvin R.
26197		 TROY
Lactuca graminifolia Michaux
UNA00058311 Pike 29 Apr 2002 Diamond, Alvin R.
13109		 UNA
Lactuca graminifolia Michx.
TROY000035332 Bullock 24 May 2012 Dykes, Bailee
767		 TROY
Lactuca graminifolia Michaux
USAM000002499 Mobile 09 May 1977 LeLong, Michel G.
9751		 USAM
Lactuca graminifolia Michaux
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