Aphyllon uniflorum

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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:OROBANCHACEAE
Species:Aphyllon uniflorum (L.) Torr. & A. Gray
Common Name:One Flower Cancer Root; One Flower Broom Rape; Naked Broom Rape
Habitat:Parasitic on roots of hardwoods, mostly oaks.
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:**
Plant Notes:One Flower Cancer Root is a native herbaceous annual or rarely perennial species in the Broomrape family (Orobanchaceae). It can be found throughout Alabama. One Flower Cancer Root occurs in rich hardwood forests, in mixed mesic woodlands, and occasionally on roadside or in fields. It is a holoparasite (lacking chlorophyll) that is parasitic on the roots of a variety of other species. The short stems are subterranean, erect, and with reduced overlapping, brown scale-like leaves. Flowers are solitary and terminal on long scapes. The scape is yellowish-white and glandular pubescent. The scapes lack bracts. The calyx is 5 toothed and the corolla is 2-lipped, tubular, and often curved. Bothe are glandular pubescent. The corolla varies from yellowish-white in color to blueish. The fruit is a capsule with many small seed. One Flower Cancer Root is listed as an 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 G5 species (demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery).—A. Diamond
Taxonomic Notes:Ours is the typical variety. Var. occidentale is western and out of our range.
Status:Native, FACU (NWI), S2 (State Rank), G5 (Global Rank)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyOROBANCHACEAE - Broomrape family
Genus Aphyllon
Species Aphyllon uniflorum (L.) Torr. & A. Gray - One Flower Cancer Root; One Flower Broom Rape; Naked Broom Rape

Citation

Citation Aphyllon uniflorum (Linnaeus) Torrey & A. Gray, Manual 290. 1848.
Basionym: Orobanche uniflora L. 1753.
Type: USA: VIRGINIA: Without data, Clayton 387 ["83"] (lectotype: BM). Lectotypified by J.L. Reveal et al, Huntia 7: 224. 1987.

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Anoplon biflorum Anoplon biflorum (Nuttall) G. Don, Gen. Hist. 4: 634. 1838.Orobanche biflora Nuttall 1818.  
Aphyllon inundatum Aphyllon inundatum Suksdorf, Allg. Bot. Z. 12: 27. 1906.  
Aphyllon minutum Aphyllon minutum Suksdorf, Deutsche Bot. Monatsschr. 18: 155. 1900. WASHINGTON: Klickitat Co.: Bingen, s.d., Suksdorf 2345 (holotype: WS; isotypes: UC, US).
Aphyllon sedi Aphyllon sedi Suksdorf, Deutsche Bot. Monatsschr. 18: 155. 1900. WASHINGTON: Klickitata Co.: Bingen, s.d., Suksdorf 2642 (holotype: WS; isotype: US).
Aphyllon uniflorum var. occidentale Aphyllon uniflorum (Linnaeus) Torrey & A. Gray ex A. Gray, var. occidentale Greene, Man. Bot. San Francisco 285. 1894. CALIFORNIA
Orobanche biflora Orobanche biflora Nuttall, Gen. N. Amer. Pl. 2: 59. 1818.  
Orobanche porphyrantha Orobanche porphyrantha Beck, in Engler, Pflanzenr. 4(Heft 96): 49. 1930.Thalesia purpurea A. Heller 1897. 
Orobanche purpurea Orobanche purpurea Jacquin, Enum. Stirp. Vindob. 108, 252. 1762. AUSTRIA
Orobanche sedi Orobanche sedi (Suksdorf) Fernald, Rhodora 28: 236. 1927.Aphyllon sedi Suksdorf 1900. 
Orobanche terrae-novae Orobanche terrae-novae Fernald, Rhodora 28: 235. 1927. CANADA: Newfoundland: Bard Harbor, St. John Bay, 29 Jul 1925, Wiegand et al. 29049 (holotype: GH).
Orobanche uniflora subsp. occidentalis Orobanche uniflora Linnaeus, subsp. occidentalis (Greene) Abrams ex Ferris, Contr. Dudley Herb. 5: 99. 1958.Aphyllon uniflorum (Linnaeus) Torrey & A. Gray ex A. Gray, var. occidentale Greene 1894. 
Orobanche uniflora var. minuta Orobanche uniflora Linnaeus, var. minuta (Suksdorf) Beck, in Engler, Pflanzenr. 4(Heft 96): 49. 1930.Aphyllon minutum Suksdorf 1900. 
Orobanche uniflora var. occidentalis Orobanche uniflora Linnaeus, var. occidentalis (Greene) R. L. Taylor & Macbryde, Canad. J. Bot. 56: 187. 1978.Aphyllon uniflorum (Linnaeus) Torrey & A. Gray ex A. Gray, var. occidentalis Greene 1894. 
Orobanche uniflora var. purpurea Orobanche uniflora Linnaeus, var. purpurea (A. Heller) Achey, Bull. Torrey Bot. Club 60: 445. 1933.Thalesia purpurea A. Heller 1897. 
Orobanche uniflora var. sedi Orobanche uniflora Linnaeus, var. sedi (Suksdorf) Achey, Bull. Torrey Bot. Club 60: 446. 1933.Aphyllon sedi Suksdorf 1900. 
Orobanche uniflora var. terrae-novae Orobanche uniflora Linnaeus, var. terrae-novae (Fernald) Munz ex Achey, Bull. Torrey Bot. Club 60: 444. 1933.Orobanche terrae-novae Fernald 1927.  
Orobanche uniflora var. typica Orobanche uniflora Linnaeus, var. typica Achey, Bull. Torrey Bot. Club 60: 443. 1933, nom. inadmiss.Orobanche uniflora Linnaeus 1753. 
Orobanche uniflora Orobanche uniflora Linnaeus 1753. VIRGINIA: Without data, Clayton 83 (lectotype: BM). Lectotypified by Reveal, Huntia 7: 224. 1987.
Phelypaea biflora Phelypaea biflora Sprengel, Syst. Veg. 2: 818. 1825., nom. illegit.Orobanche uniflora Linnaeus 1753. 
Thalesia minuta Thalesia minuta (Suksdorf) Rydberg, Bull. Torrey Bot. Club 36: 692. 1909.Aphyllon minutum Suksdorf 1900. 
Thalesia purpurea Thalesia purpurea A. Heller, Bull. Torrey Bot. Club 24: 313. 1897. IDAHO: Nez Perces Co.: Lewiston, near mouth of Potlatch, s.d., Heller 3099 (holotype: ?; isotypes: MO, UC, US).
Thalesia sedi Thalesia sedi (Suksdorf) Rydberg, Bull. Torrey Bot. Club 36: 692. 1909.Aphyllon sedi Suksdorf 1900.  
Thalesia uniflora Thalesia uniflora (Linnaeus) Britton, Mem. Torrey Bot. Club 5: 298. 1894.Orobanche uniflora Linnaeus 1753. 

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, Bullock, Cherokee, Cullman, DeKalb, Etowah, Houston, Jackson, Jefferson, Lawrence, Mobile, Montgomery, Morgan, Russell, Tuscaloosa

Counties represented by specimen data listed below:

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

Range of years during which specimens were collected: 1953 - 1953

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
SAMF0004926 Jefferson 20 Apr 1969 Barclay, Lee
s.n.		 SAMF
Orobanche uniflora Linnaeus
TROY000007591 Bullock 19 Mar 1991 Freeman, John D.
s.n.		 TROY
Orobanche uniflora Linnaeus
UWAL0032405 Lawrence 03 May 2013 England, J. Kevin
4200		 UWAL
Orobanche uniflora Linnaeus
ALNHS00008071 Russell 07 Apr 2022 Barger, T. Wayne
SP#5928		 ALNHS
Aphyllon uniflorum (L.) Torr. & Gray
JSU139695 Etowah 08 Apr 1998 Spaulding, Daniel D.
10479		 JSU
Orobanche uniflora Linnaeus
AUA_ACC_51095 Tuscaloosa 21 Mar 1990 Diamond, Alvin R.
6752		 AUA
Orobanche Uniflora L.
UWAL0015458 Mobile 20 Mar 2013 Horne, Howard E.
2014		 UWAL
Orobanche uniflora Linnaeus
SAMF0004925 Jefferson 22 Apr 1959 McCullough, Herbert A.
s.n.		 SAMF
Orobanche uniflora Linnaeus
AUA_ACC_53450 Jackson 11 Apr 1991 Gunn, Scott C.
1934		 AUA
Orobanche Uniflora L.
UNA00042659 Tuscaloosa 1 Apr 1967 Pollard, Judy
81		 UNA
Orobanche uniflora L.
JSU139692 Cherokee 06 May 1980 Whetstone, R. David
9971		 JSU
Orobanche uniflora Linnaeus
AUA_ACC_66729 Mobile 28 Mar 1973 Taylor, John
12840		 AUA
Orobanche Uniflora L.
JSU139696 Morgan 13 Apr 1997 Spaulding, Daniel D.
9749		 JSU
Orobanche uniflora Linnaeus
ALNHS00000202 Houston 06 Mar 1993 MacDonald, J.R.
5855		 ALNHS
Aphyllon uniflorum (L.) Torr. & Gray
JSU139693 DeKalb 09 May 1972 Whetstone, R. David
RDW-1157		 JSU
Orobanche uniflora Linnaeus
ALNHS00006360 Montgomery 19 Mar 2019 Barger, T. Wayne
SP#4284		 ALNHS
Aphyllon uniflorum (L.) Torr. & Gray
UNA00042657 Blount 21 Mar 1953 Chermock, Ralph L.
s.n.		 UNA
Orobanche uniflora L. var. uniflora
TROY000052072 Montgomery 19 Mar 2021 Birkhead, Roger
s.n.		 TROY
Aphyllon uniflorum L.
JSU139694 DeKalb 09 May 1972 Whetstone, R. David
RDW-1157		 JSU
Orobanche uniflora Linnaeus
UNA00027563 Cullman _ May 1892 Mohr, Charles
s.n.		 UNA
Orobanche uniflora L.
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