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Aphyllon uniflorum (Linnaeus) Torrey & A. Gray. Ghostpipe, Cancer-root, One-flowered Broomrape. Phen: Apr-Jun. Hab: In a wide diversity of forests. Dist: NL (Newfoundland) west to AK and BC, south to FL and TX.

Origin/Endemic status: Native

Taxonomy Comments: Aphyllon uniflorum var. occidentale Greene is western, distributed from SK and BC south to w. TX, CA, and Mexico. Schneider et al. (2016) showed that var. occidentale differs genetically and in host from eastern var. uniflora; it should be accorded specific rank.

Synonymy: = Fl7; = Orobanche uniflora L. ssp. uniflora – FNA17; = Orobanche uniflora L. var. uniflora – C; = Thalesia uniflora (L.) Britton – S; < Aphyllon uniflorum (L.) Torr. & A.Gray – Schneider (2016); > Orobanche terrae-novae Fernald – F; < Orobanche uniflora L. – Ar, G, GrPl, Il, K1, K3, Mi, NE, NY, Pa, RAB, Tn, Tx, Va, W, WH3, Musselman (1982); >< Orobanche uniflora L. – F

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image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Bruce A. Sorrie | Original Image ⭷