Nebraska Invasive Species

Species	Common Name	Physiog	CofW	Wetness	Family	Grank	Srank
Oenothera albicaulis	Pale Evening-primrose	A-forb	5	UPL	Onagraceae	G5	S5
Oenothera biennis	Eastern Evening-primrose	B-forb	4	FACU	Onagraceae	G5	SU
Oenothera caespitosa var. caespitosa	Gumbo-lily	P-forb	5	UPL	Onagraceae	G5T5	S5?
Oenothera caespitosa var. montana	Gumbo-lily	P-forb	5	UPL	Onagraceae	G5TNR	SU
Oenothera canescens	Spotted Evening-primrose	P-forb	2	FACW	Onagraceae	G4G5	S2
Oenothera coronopifolia	Combleaf Evening-primrose	P-forb	5	UPL	Onagraceae	G5	S5
Oenothera laciniata	Cutleaf Evening-primrose	A-forb	4	FACU	Onagraceae	G5	S5
Oenothera latifolia	Pale Evening-primrose	P-forb	5	UPL	Onagraceae	G5	S5
Oenothera macrocarpa ssp. fremontii	Fremont's Evening-primrose	P-forb	5	UPL	Onagraceae	G5T3	S1
Oenothera macrocarpa ssp. macrocarpa	Missouri Evening-primrose	P-forb	5	UPL	Onagraceae	G5T5?	S4?
Oenothera nuttallii	White-stem Evening-primrose	P-forb	5	UPL	Onagraceae	G5	S5
Oenothera perennis	Small Sundrops	P-forb	3	FAC	Onagraceae	G5	S2
Oenothera rhombipetala	Fourpoint Evening-primrose	B-forb	4	FACU	Onagraceae	G4G5	S5
Oenothera speciosa	Showy White Evening-primrose	P-forb	5	UPL	Onagraceae	G5	SE
Oenothera villosa var. strigosa	Common Evening-primrose	B-forb	3	FAC	Onagraceae	G5T4T5	SU
Oenothera villosa var. villosa	Common Evening-primrose	B-forb	3	FAC	Onagraceae	G5T5?	S5
Onobrychis viciifolia	Sainfoin	P-forb	5	UPL	Fabaceae	G5	SE
Onoclea sensibilis	Sensitive Fern	Fern	2	FACW	Dryopteridaceae	G5	S5
Onopordum acanthium	Scotch-thistle	B-forb	5	UPL	Asteraceae	GNR	SE
Onosmodium bejariense var. occidentale (O. molle var. occidentale)	False Gromwell	P-forb	4	FACU	Boraginaceae	G4G5T4?	S5
Oonopsis multicaulis (Haplopappus multicaulis)	Branched False-goldenweed	P-forb	5	UPL	Asteraceae	G4	S3?
Ophioglossum engelmannii	Limestone Adder's-tonque	Fern	4	FACU	Ophioglossaceae	G5	S1
Ophioglossum pusillum (O. vulgatum var. pseudopodum)	Northern Adder's-tongue	Fern	2	FACW	Ophioglossaceae	G5	S2
Opuntia fragilis	Brittle Prickly Pear	P-forb	5	UPL	Cactaceae	G4G5	S5
Opuntia humifusa var. humifusa	Eastern Prickly Pear	P-forb	5	UPL	Cactaceae	G5T5	S5?
Opuntia polyacantha var. polyacantha	Spine-fruit Prickly Pear	P-forb	5	UPL	Cactaceae	G5T5	S5
Opuntia tortispina (O. macrorhiza, in part)	Plains Prickly Pear	P-forb	5	UPL	Cactaceae	GNR	SU
Ornithogalum umbellatum	Star-of-Bethlehem	P-forb	4	FACU	Hyacintheaceae	G2?	SE
Orobanche fasciculata	Clustered Broomrape	P-forb	5	UPL	Orobanchaceae	G4	S5
Orobanche ludoviciana var. ludoviciana	Louisana Broomrape	P-forb	5	UPL	Orobanchaceae	G5T5	S5
Orobanche uniflora var. uniflora	One-flower Broomrape	P-forb	5	UPL	Orobanchaceae	G5TNR	S1
Orthilia secunda (Pyrola secunda)	One-sided Wintergreen	P-forb	4	FACU	Ericaceae	G5	S1
Orthocarpus luteus	Owl-clover	A-forb	4	FACU	Orobanchaceae	G5	S4
Osmorhiza claytonii	Hairy Sweet Cicely	P-forb	4	FACU	Apiaceae	G5	S5
Osmorhiza longistylis	Aniseroot	P-forb	3	FAC	Apiaceae	G5	S5
Ostrya virginiana	Ironwood	Tree	4	FACU	Betulaceae	G5	S5
Oxalis dillenii	Slender Yellow Wood-sorrel	P-forb	5	UPL	Oxalidaceae	G5	S5
Oxalis stricta	Upright Yellow Wood-sorrel	P-forb	4	FACU	Oxalidaceae	G5	S5
Oxalis violacea	Violet Wood-sorrel	P-forb	5	UPL	Oxalidaceae	G5	S5
Oxytropis lambertii var. lambertii	Purple Locoweed	P-forb	4	FACU	Fabaceae	G5TNR	S5
Oxytropis multiceps	Dwarf Locoweed	P-forb	5	UPL	Fabaceae	G5	S2
Oxytropis sericea var. sericea	Silky Locoweed	P-forb	5	UPL	Fabaceae	G5T5	S5

Nebraska Invasive Species Project

Monitoring Mapping Risk and Management

Vascular Plants of Nebraska

Use the Navigation Below to view an Alphabetical List