Drosera tracyi

Family:DROSERACEAE
Species:Drosera tracyi Macfarlane
Common Name:Tracy's Sundew; Giant Threadleaf Sundew
Habitat:Boggy areas in the lower Coastal Plain.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:**
Category:Vascular
USDA Symbol:**
Plant Notes:Giant Threadleaf Sundew is a native herbaceous perennial in the Sundew family (Droseraceae). It is native to southwest Alabama. Giant Threadleaf Sundew grows in pitcher plant bogs, seeps, wet pine savannas, and wet roadside ditches. It is a perennial from a bulbous base surrounded by the expanded bases of petioles. Leaves are petiolate, filiform in outline, and densely covered in yellowish-green stalked glands. The leaves are up to 1 foot in length, making this our largest native species of Sundew. Flowers are produced in a raceme. Each flower has 5 rose-purple petals. The fruit is a capsule. Giant Threadleaf Sundew is readily available in the nursery trade from sites specializing in carnivorous or bog plants. Several cultivars and hybrids are also available. Giant Threadleaf Sundew requires a moist sandy or peaty soil and full sun. Plants should not be allowed to dry out during the growing season. After frost, plants develop a winter hibernaculae consisting of the terminal bud surrounded by the old leaf bases. These hibernaculae require a period of cool temperatures, and can be over wintered outside unless temperatures are extremely low. Giant Threadleaf Sundew, like all Sundews, is a carnivorous plant that attracts, catches, and digests small arthropods, mostly small flies and gnats. Some prefer to use the term “insectivorous” to more accurately describe these plants. The glandular hairs on the leaf are able to respond to stimuli, and press trapped prey to the leaf surface where sessile glands secrete digestive enzymes that dissolve soft tissues. These nutrients, especially nitrogen, are absorbed and supplement nutrients available in the poor, acidic soils where these plants grow. While the addition of these nutrients aid plants in the wild, cultivated plants are able to thrive without the addition of prey. There is no need to “feed” your plant, and too many prey items can actually harm the plant. Giant Threadleaf Sundew is an interesting plant and can be grown in
Taxonomic Notes:Drosera tracyi occurrs along the Gulf Coastal Plain while D. filiformis is along the Atlantic Coastal Plain and not known from Alabama. Often times in the past, plants from Alabama have been misidentified as D. filiformis which are identifiable with D. tracyi. Specimens listed below as D. filiformis should be annotated and treated as D. tracyi.
Status:Native, OBL (NWI)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyDROSERACEAE - Sundew family
Genus Drosera
Species Drosera tracyi Macfarlane - Tracy's Sundew; Giant Threadleaf Sundew

Citation

Citation DROSERA TRACYI (Diels) Macfarlane, in L. H. Bailey, Stand. Cycl. Hort. 2: 1077. 1914.
Basionym: Drosera filiformis Rafinesque, var. tracyi Diels 1906.
Type: MISSISSIPPI: Jackson Co.: Ocean Springs, Jun 1905, Macfarlane & Goertz s.n. (holotype: ?).

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Drosera filiformis var. tracyi Drosera filiformis Rafinesque, var. tracyi Diels, in Engler, Pflanzenr. 4(Heft 26): 92. 1906. MISSISSIPPI: Jackson Co.: Ocean Springs, Jun 1905, Macfarlane & Goertz s.n. (holotype: ?).

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, Covington, Escambia, Mobile, Washington

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: -

Barcode / Accession No. County Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
USAM000005440 Baldwin 05 May 1968 Ben Martin
6
USAM
Drosera filiformis Rafinesque
4639 Baldwin 15 MAY 1964 CREEL, JOHN
AUA
DROSERA TRACYI MACFARLANE
JSU121025 Mobile 26 Mar 1994 R. D. Whetstone
s.n.
JSU
Drosera tracyi Macfarlane
AMAL00010121 Escambia 23 Jul 1999 Christopher M. Davis
4
AMAL
Drosera tracyi Macfarlane
65036 Baldwin 23 JUN 2004 SPAULDING, DANIEL D.
12141
AUA
DROSERA TRACYI MACFARLANE
2479 Baldwin 18 APR 1953 SCOTT, C. E.
AUA
DROSERA TRACYI MACFARLANE
72418 Baldwin 1 APR 2008 BARGER, T. WAYNE
PERD-325
AUA
DROSERA TRACYI MACFARLANE
UWAL0037608 Escambia 14 Jul 1995 Sorrie, B.A.
8505
UWAL
Drosera tracyi Macfarlane ex Bailey
UWAL0007409 Washington 30 May 2009 Keener, Brian R.
5424
UWAL
Drosera tracyi Macfarlane
UNA00053356 Escambia 5 May 2000 Robert R. Haynes
10041
UNA
Drosera tracyi Macfarlane
JSU121023 Baldwin 10 Aug 1993 D. D. Spaulding
4257
JSU
Drosera tracyi Macfarlane
37633 Baldwin 22 SEP 1981 HENDERSON, T.
595
AUA
DROSERA TRACYI MACFARLANE
10255 Baldwin 11 MAY 1962 PARKER, W. D.
AUA
DROSERA TRACYI MACFARLANE
UWAL0002367 Washington 09 Jun 2008 Spaulding, Daniel D.
12927
UWAL
Drosera tracyi Macfarlane
UNA00059616 Baldwin 10 Nov 2002 Tad M. Zebryk
8007
UNA
Drosera tracyi Macfarlane
TROY000031835 Washington 30 May 2009 Brian R. Keener
5424
TROY
Drosera tracyi Macfarlane
JSU121024 Baldwin 28 Sep 1985 R. D. Whetstone
15274
JSU
Drosera tracyi Macfarlane
7320 Washington 31 AUG 1960 JONES, JR., SAMUEL B.
272
AUA
DROSERA TRACYI MACFARLANE
TROY000030917 Baldwin 01 May 1954 D. C. Davis
s.n.
TROY
Drosera tracyi Macfarlane
UNA00011118 Baldwin 7 Aug 1979 L. J. Davenport
1470
UNA
Drosera tracyi Macfarlane
TROY000046145 Covington 21 May 2009 C.J. Hansen
4052
TROY
Drosera tracyi Macfarlane
USAM000005441 Mobile 21 May 1980 Maureen T. Powers
23
USAM
Drosera filiformis Rafinesque
UNA00011123 Washington 5 Aug 1980 Robert R. Haynes
8149
UNA
Drosera tracyi Macfarlane
12338 Baldwin 1 MAY 1965 KOELLING, ALFRED C.
2206
AUA
DROSERA TRACYI MACFARLANE
70373 Covington 21 MAY 2009 HANSEN, CURTIS J.
4052
AUA
DROSERA TRACYI MACFARLANE
19137 Baldwin 3 MAY 1969 MOORE, HAROLD D.
188-69
AUA
DROSERA TRACYI MACFARLANE
USAM000005446 Baldwin 09 Jun 1969 Robert Kral
35202
USAM
Drosera tracyi Macfarlane
TROY000004237 Baldwin 11 May 2005 Curtis J. Hansen
1745
TROY
Drosera tracyi Macfarlane
UNA00060417 Baldwin 25 Nov 2002 Tad M. Zebryk
8093
UNA
Drosera tracyi Macfarlane
UNA00011128 Baldwin 5 Jun 1953 Jack S. Brown
s.n.
UNA
Drosera tracyi Macfarlane
UNA00011103 Baldwin 24 May 1980 Robert R. Haynes
7804
UNA
Drosera tracyi Macfarlane
37967 Baldwin 27 APR 1982 JONES, T. R.
AUA
DROSERA TRACYI MACFARLANE
AMAL00007537 Baldwin 10 Nov 2002 Tad M. Zebryk
8007
AMAL
Drosera tracyi Macfarlane
UNA00011133 Washington 23 Oct 1949 Lloyd C. Crawford
s.n.
UNA
Drosera tracyi Macfarlane
TROY000046156 Covington 21 May 2009 C.J. Hansen
4052
TROY
Drosera tracyi Macfarlane
USAM000005442 Baldwin 12 May 1980 Elvin G. Ewing, Jr.
s.n.
USAM
Drosera filiformis Rafinesque
UNA00054790 Mobile 29 Apr 2001 Robert R. Haynes
10180
UNA
Drosera tracyi Macfarlane
70468 Washington 30 MAY 2009 KEENER, BRIAN R.
5424
AUA
DROSERA TRACYI MACFARLANE
65502 Baldwin 11 MAY 2005 HANSEN, CURTIS J.
1745
AUA
DROSERA TRACYI MACFARLANE
UNA00011113 Washington 6 Jun 1968 R. Kral
31194
UNA
Drosera tracyi Macfarlane
12801 Escambia 30 APR 1967 BARRICK, WILLIAM E.
AUA
DROSERA TRACYI MACFARLANE
AMAL00000237 Washington 09 Jun 2008 Daniel D. Spaulding
12927
AMAL
Drosera tracyi Macfarlane
2478 Baldwin 1 MAY 1954 DAVIS, DONALD E.
AUA
DROSERA TRACYI MACFARLANE
UWAL0034360 Mobile 10 Jun 1995 Kral, R.
84969
UWAL
Drosera tracyi MacFarlane
TROY000004238 Mobile 29 Apr 2001 Robert R. Haynes
10180
TROY
Drosera tracyi Macfarlane
UWAL0036211 Baldwin 19 May 2014 Keener, Brian R.
8439
UWAL
Drosera tracyi (Diels) MacFarlane
UNA00011108 Mobile _ May 1874 Charles Mohr
s.n.
UNA
Drosera tracyi Macfarlane
13371 Baldwin 29 APR 1967 RANKIN, H. TAYLOR
164
AUA
DROSERA TRACYI MACFARLANE
UWAL0016926 Baldwin 23 Apr 2006 England, J. Kevin
0506
UWAL
Drosera tracyi Macfarlane
2480 Baldwin 18 APR 1953 BENNETT, ORUS L.
AUA
DROSERA TRACYI MACFARLANE
AMAL00011682 Baldwin 23 Jun 2004 Daniel D. Spaulding
12141
AMAL
Drosera tracyi Macfarlane
13645 Baldwin 30 APR 1967 DENT, D. M.
AUA
DROSERA TRACYI MACFARLANE
AMAL00010123 Escambia 18 Oct 1999 Christopher M. Davis
34
AMAL
Drosera tracyi Macfarlane
59785 Covington 21 MAY 1996 SORRIE, BRUCE A.
8826
AUA
DROSERA TRACYI MACFARLANE
SAMF0003619 Washington 30 May 2009 Keener, Brian R.
5424
SAMF
Drosera tracyi Macfarlane
14708 Baldwin 3 MAY 1969 ROBERSON, B. J.
137
AUA
DROSERA TRACYI MACFARLANE
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