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Oligoneuron houghtonii (Houghton's goldenrod)
Smith, R.W.

Oligoneuron houghtonii

Oligoneuron houghtonii (Torr. & A. Gray ex A. Gray) G.L. Nesom

Houghton's Goldenrod

Asteraceae (Aster Family)

Synonym(s): Solidago houghtonii


USDA Native Status: L48 (N), CAN (N)

Federally-listed threatened species. Plants in New York (a single population) previously thought to be a separate species has been confirmed genetically to be this species.


From the Image Gallery

4 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Leaf Shape: Lanceolate , Ovate
Leaf Pubescence: Glabrous
Leaf Margin: Ciliate , Entire
Leaf Apex: Acute , Obtuse
Inflorescence: Head
Fruit Type: Achene
Size Notes: 30-60cm. (Webref 3).
Leaf: Leaves: basal tapering to long, winged petioles, blades ovate, to 722 mm wide, margins entire, apices acute, faces glabrous; proximal cauline tapering to winged petiole-like bases partially clasping stems, blades sometimes 3-nerved (2 prominent lateral nerves arising proximally and running alongside midnerve for some distance before diverging), linear oblanceolate , 158177 722 mm, margins entire, ciliate, apices acute to obtuse, glabrous; mid to distal sessile, blades linear lanceolate , mid often 3-nerved (obscurely sometimes), distal 1-nerved, 47100 410 mm, reduced distally. (Webref 3).
Flower: Ray florets 612 (pale to bright yellow); laminae 7.47.9 0.50.6 mm. Disc florets 815; corollas 44.3 mm, lobes 0.91.5 mm. (Webref 3).
Fruit: Cypselae obconic, 1.41.8 mm, glabrous, ribs sometimes dark. (Webref 3).
Size Class: 1-3 ft.

Bloom Information

Bloom Color: Yellow
Bloom Time: Aug , Sep


Canada: ON
Native Distribution: A Great Lakes shoreline endemic found along the northern shores of Lakes Michigan and Huron ( Michigan, and Ontario, Canada). (Webref 12).
Native Habitat: Found within damp interdunal hollows and flats, swales, limestone crevices and pavements (alvars). (Webref 12).

Growing Conditions

Water Use: High
Light Requirement: Sun
Soil Moisture: Moist
Soil pH: Alkaline (pH>7.2)
CaCO3 Tolerance: High
Drought Tolerance: High
Cold Tolerant: yes
Soil Description: Moist, sandy, interdunal depressions and seasonably-wet limestone alvars. (Webref 12).


Conspicuous Flowers: yes

National Wetland Indicator Status

Status: OBL
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 12 - Great Lakes Ecological Assessment: Threatened, Endangered, or Sensitive Species (2012) USDA Natural Resources Conservation Service

Additional resources

USDA: Find Oligoneuron houghtonii in USDA Plants
FNA: Find Oligoneuron houghtonii in the Flora of North America (if available)
Google: Search Google for Oligoneuron houghtonii


Record Modified: 2012-11-07
Research By: JAM

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