Cuscuta harperi

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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:CONVOLVULACEAE
Species:Cuscuta harperi Small
Common Name:Harper's Dodder
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:**
Plant Notes:Harper's Dodder is a native annual twining vine in the Morning-Glory family (Convolvulaceae). It can be found in the northern third of Alabama. Harper's Dodder occurs on open, sunny, sandstone or granite outcrops. It is a holoparasite, lacking chlorophyll. The stems are thin, orangish-yellow in color, twisting around and attaching to host plants with specialized roots known as haustoria. The haustoria allow the Dodder to extract nutrients and water from the host. Leaves are alternate and reduced to small scales. The flowers are small (1 mm long), with 4 green-white sepals and 4 white petals with up-turned tips. The fruit is a small round capsule. Harper's Dodder is listed as a S2 species in Alabama (typically 6 to 20 occurrences, few remaining individuals, or factors demonstrably making it very vulnerable in the state), and globally as a G2G3 species (imperiled globally because of rarity (6 - 20 occurrences) or very vulnerable to extinction throughout its range because of other factors). It is restricted to sunny rock outcrops, and parasitizes a narrow range of species including Small Head Blazing Star (Liatris microcephala (Small) K. Schumann), Nuttall's Rayless Goldenrod (Bigelowia nuttallii L.C. Anderson), Longleaf Sunflower (Helianthus longifolius Pursh), Pineweed (Hypericum gentianoides (Linnaeus) Britton, Sterns & Poggenburg), and Outcrop Rushfoil (Croton willdenowii G.L. Webster).—A. Diamond
Taxonomic Notes:**
Status:Native, S2 (State Rank), G2G3 (Global Rank)
References:**

** Not applicable or data not available.

Classification

FamilyCONVOLVULACEAE - Morning-Glory family
Genus Cuscuta
Species Cuscuta harperi Small - Harper's Dodder

Citation

Citation Cuscuta harperi Small, Fl. S.E. U.S. (ed. 2) 1361, 1375. 1913.
Basionym: **
Type: **

** Not applicable or data not available.

Synonyms

No synonyms exist for this species.

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: Blount, Cullman, DeKalb, Etowah, Jackson, Jefferson, Marion, Marshall, Winston

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1898 - 1980

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
JSU120653 DeKalb 14 Sep 1997 Schotz, Alfred
1549		 JSU
Cuscuta harperi Small
JSU120656 DeKalb 6 Sep 1984 Nixon, Christopher F.
807		 JSU
Cuscuta harperi Small
UWAL0010272 Etowah 28 Oct 2007 Keener, Brian R.
3994		 UWAL
Cuscuta harperi Small
JSU120662 Marshall 14 Aug 1992 Spaulding, Daniel D.
2662		 JSU
Cuscuta harperi Small
UNA00038995 DeKalb 14 Oct 1979 McDaniel, Sidney
22989		 UNA
Cuscuta harperi Small
ALNHS00003204 Etowah 2 Jul 2015 Barger, T. Wayne
SP#1736		 ALNHS
Cuscuta harperi Small
SAMF0004500 Etowah 13 Sep 2011 Davenport, Lawrence J.
4856		 SAMF
Cuscuta harperi Small
AUA000040099 Cullman 15 Jul 1913 Schroecker, Alosis
1490		 AUA
Cuscuta Harperi Small
BRIT54221 DeKalb 14 Aug 1953 Harper, Roland M.
6479		 BRIT
Cuscuta harperi Small
JSU120657 Etowah 3 Sep 1994 Hodge, Lesley M.
3438		 JSU
Cuscuta harperi Small
UNA00038998 DeKalb 29 Aug 1980 McDaniel, Sidney
24443		 UNA
Cuscuta harperi Small
BRIT54219 DeKalb 24 Sep 1980 Kral, Robert
66379		 BRIT
Cuscuta harperi Small
BRIT54213 Marion 21 Jul 1999 Schotz, Alfred
1744		 BRIT
Cuscuta harperi Small
SAMF0004499 Etowah 01 Jul 2014 Davenport, Lawrence J.
5616		 SAMF
Cuscuta harperi Small
BRIT54215 Marion 09 Sep 1975 Godfrey, Robert K.
74442		 BRIT
Cuscuta harperi Small
UNA00038958 12 Sep 1898 Mohr, Charles
s.n.		 UNA
Cuscuta harperi Small
UWAL0018042 Etowah 23 Aug 1996 Kral, Robert
86624		 UWAL
Cuscuta harperi Small
BRIT54217 Etowah 23 Aug 1996 Kral, Robert
86624		 BRIT
Cuscuta harperi Small
UWAL0018186 DeKalb 27 Sep 1980 Kral, Robert
66379		 UWAL
Cuscuta harperi Small
AUA000037034 DeKalb 26 Jul 1970 Morris, Kermit
86		 AUA
Cuscuta Harperi Small
BRIT54214 Marion 07 Sep 1968 Kral, Robert
32878		 BRIT
Cuscuta harperi Small
JSU120661 Marshall 19 Jul 1992 Spaulding, Daniel D.
2360		 JSU
Cuscuta harperi Small
AMAL00018268 Etowah 27 Jul 2008 Keener, Brian R.
4701		 AMAL
Cuscuta harperi Small
UWAL0007391 Etowah 27 Jul 2008 Keener, Brian R.
4701		 UWAL
Cuscuta harperi Small
BRIT54220 DeKalb 14 Oct 1979 McDaniel, Sidney
22986		 BRIT
Cuscuta harperi Small
UNA00038997 DeKalb 15 Aug 1945 Harper, Roland M.
3997		 UNA
Cuscuta harperi Small
UWAL0038680 Jefferson 06 Oct 2018 England, J. Kevin
9577		 UWAL
Cuscuta harperi Small
AUA000041534 Etowah 10 Jul 2018 Hansen, Curtis J.
7328		 AUA
Cuscuta Harperi Small
UWAL0007390 Etowah 18 Oct 2008 England, J. Kevin
1430		 UWAL
Cuscuta harperi Small
UWAL0038633 Winston 17 Aug 2018 England, J. Kevin
9394		 UWAL
Cuscuta harperi Small
TROY000018537 DeKalb 07 Sep 1986 Dickson, Catherine C.
11		 TROY
Cuscuta harperi Small
AUA000040098 Marshall 29 Aug 1933 Harper, Roland M.
 AUA
Cuscuta Harperi Small
BRIT54216 Jackson 23 Aug 1991 Gunn, Scott C.
2067		 BRIT
Cuscuta harperi Small
UWAL0053958 Blount 22 Jul 2022 Candeias, Matt
s.n.		 UWAL
Cuscuta harperi Small
JSU120658 Etowah 26 Jun 1994 Hodge, Lesley M.
2736		 JSU
Cuscuta harperi Small
UWAL0018187 DeKalb 24 Sep 1980 Kral, Robert
66378		 UWAL
Cuscuta harperi Small
BRIT54218 DeKalb 24 Sep 1980 Kral, Robert
66378		 BRIT
Cuscuta harperi Small
JSU120660 Jackson 27 Sep 1997 Schotz, Alfred
1562		 JSU
Cuscuta harperi Small
AMAL00006565 Marion 25 Jul 2001 Threlkeld, Steven J.
1453		 AMAL
Cuscuta harperi Small
UWAL0052089 DeKalb 19 Sep 2020 Keener, Brian R.
11946		 UWAL
Cuscuta harperi Small
JSU120655 DeKalb 11 Aug 1974 Whetstone, R. David
3524		 JSU
Cuscuta harperi Small
JSU120654 DeKalb 28 Sep 1997 Schotz, Alfred
1565		 JSU
Cuscuta harperi Small
AUA000037031 Jackson 23 Aug 1991 Gunn, Scott C.
2067		 AUA
Cuscuta Harperi Small
BRIT54212 Marion 07 Sep 1968 Kral, Robert
32878		 BRIT
Cuscuta harperi Small
JSU120659 Jackson 12 Jul 1999 Brodeur, Kristin R.
2095		 JSU
Cuscuta harperi Small
AUA000037032 DeKalb 28 Sep 1997 Schotz, Alfred
1565		 AUA
Cuscuta Harperi Small
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