Erigeron pulchellus (Robin's Plantain)

Plant Info
Also known as: Poor Robin's Fleabane
Genus:Erigeron
Family:Asteraceae (Aster)
Life cycle:perennial
Origin:native
Habitat:part shade, sun; average to moist soil; open woods, savannas, meadows, stream banks
Bloom season:April - June
Plant height:8 to 24 inches
Wetland Indicator Status:GP: FACU MW: FACU NCNE: FACU
MN county distribution (click map to enlarge):Minnesota county distribution map
National distribution (click map to enlarge):National distribution map

Pick an image for a larger view. See the glossary for icon descriptions.

Detailed Information

Flower: Flower shape: 7+petals

[photo of flowers] Flowers heads number 1 to 6 (usually 4 or fewer) in an open cluster at the tip of stem. Flowers are 1 to 1½ inches across with 50 to 100 narrow rays (petals) around a yellow center disk 1/3 to ¾ inch across. Ray color is pale violet to pink, but often white.

[photo of bracts] Behind the flower are 2 to 4 layers of narrow bracts, light green and often purplish tipped, sparsely to densely hairy. Flower stalks are stiff, hairy, and more or less dilated just below heads so appear to taper to the base of the involucre (set of bracts).

Leaves and stems: Leaf attachment: alternate Leaf attachment: basal Leaf type: simple

[photo of basal leaves] Leaves are both basal and alternate on the stem, basal leaves often tufted in a clump, broadly spatulate to nearly round, usually widest above the middle (oblanceolate), 1 to 3½ inches long, ¼ to 2 inches wide, rounded or tapered to a dull point at the tip, the base wedge-shaped or tapering to a short stalk. Edges are obscurely shallowly toothed or lobed, surfaces moderately to densely hairy, more so on underside, the hairs long, soft and spreading.

[photo of mid stem leaf] Leaves become progressively smaller and narrower as they ascend the stem, more lance-oblong or egg-shaped, toothless or with few obscure teeth, stalkless or the uppermost somewhat clasping. Stems are single from each flowering leaf clump, unbranched except in the flower cluster, erect to ascending, densely hairy on the lower stem becoming more sparse above.

Fruit: Fruit type: seed with plume

Fruit is a small light brown seed, surface hairless or stiff-hairy, each about 1.2 to 1.8 mm long, with single rows of short hairs on top.

Notes:

In Minnesota, Robin's Plantain's range is mostly limited to our east central and southeastern counties, with most records north of Wabasha County over 60 years old. There are three recognized varieties: var. braunaei found in the Cumberland Plateau of Ky, Ohio and W. Va is distinguished by being completely hairless on both stems and leaves; var. pulchellus, the most common in Minnesota and ranging south to Texas and throughout the eastern half of the US, has short, fine hairs throughout or at least on the stems, and var. tolsteadii, which is endemic to Minnesota and distinguished from the other vars by short, stiff hairs on the seeds. Robin's Plantain appears to be poorly described in the literature. Most references, most notably FNA, describe the color of var. pulchellus as "blue to pinkish" and var. tolsteadii having white flowers, but the majority of online images (granted some may be mis-identified) show the former mostly as white, less often pale pinkish. All of our own field images are of only white flowers.

Of Minnesota's other Erigeron species, Robin's Plantain may be confused with Philadelphia Fleabane (E. philadelphicus), which is a taller plant with smaller flowers (¾ inch or less across), is more heavily branched with many more flowers in each cluster (up to 100), and it is non-rhizomatous, typically a tight clump with multiple stems. Robin's Plantain is more likely to be confused with Smooth Fleabane (E. glabellus), especially the white forms, even though there is little overlap with its range. Both are perennial, rhizomatous, have single stems from each basal leaf cluster with larger and fewer flowers per cluster than other Fleabanes. But E. glabellus flowers typically have many more rays (up to 175), its lower leaves are proportionately narrower and up to 6 inches long, often with a long-tapered base or long stalk, upper leaves are lance-elliptic, it is not as hairy on either leaves or lower stem, the hairs usually shorter, flower stalks are not inflated just below the involucre (group of bracts), and it blooms later, starting in about mid-June.

Key characteristics to look for in E. pulchellus are its large flowers (1 inch or larger), small cluster size (typically 4 flowers or fewer), densely hairy leaves and stems, especially the lower stem, the hairs long, soft and spreading, and presence of broadly spatulate to nearly round basal leaves 3 inches long or less. It is rhizomatous with only one flowering stem per leaf clump, but frequently forms large colonies of flowering and non-flowering leaf clumps.

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More photos

Photos by K. Chayka and Peter M. Dziuk taken in Winona County.

Comments

Have you seen this plant in Minnesota, or have any other comments about it?

Posted by: Brian - Rushford & Rushford Sand Barrens SNA
on: 2018-03-15 20:32:56

I saw a big colony of this plant in bloom near the top of the trail that leads down to the western overlook in Magelssen Bluff Park in Rushford on May 12, 2017. The plants are on the east side of the trail. The next day I found another colony (smaller, but sill extensive) on the bluff prairie in the central valley of Rushford Sand Barrens Scientific and Natural Area, about three miles southwest of Rushford.

Posted by: Mike Larsen - Ridgetop 2 miles NW of Whitewater State Park
on: 2023-06-05 18:34:50

Found 5' wide colony on our regenerated prairie's firebreak, somewhat shaded by cedars. Obviously been there a few years but just noticed it blooming since we are late in mowing the firebreak. Will collect seed and try to identify variety.

Posted by: Steven Roste - Ramsey County Rice Creek Off-Leash Dog Park, Shoreview, MN
on: 2023-10-10 20:55:14

I've found clusters of this plant in a few different places throughout the large dog park. There are some currently in full bloom. The easiest cluster to find is within ~50 ft of the western gate, east-southeast. I'd like to know which variety it is.

Posted by: K Chayka
on: 2023-10-11 14:49:19

Steven, I suspect you saw something other than this fleabane at the dog park. This is a spring bloomer and, while some spring bloomers may bloom again in autumn when conditions are right, I don't think this is one. I happen to live close to that park and swung by there. The only white-flowered plant I saw blooming within 100 feet of the west gate was the weedy hoary alyssum, but maybe I just didn't look in the right spot. If you'd like confirmation on the fleabane, post some images on the Minnesota Wildflowers Facebook page and we'll be happy to take a look.

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