small logoThe Friends of the Wild Flower Garden, Inc.

Plants of the Eloise Butler Wildflower Garden

The oldest public wildflower garden in the United States

thumbnail image

Common Name
Great Indian Plantain and
Pale Indian Plantain

 

Scientific Name
Arnoglossum reniforme (Hook.) H. Rob.
Arnoglossum atriplicifolium (L.) H. Rob.

 

Plant Family
Aster (Asteraceae)

Garden Location
Upland

 

Prime Season
Early Summer Flowering

 

 

This page covers two plants as both are similar in appearance. Both are erect native perennials.

Stems of Great Indian Plantain (A. reniforme) have 6 to 8 angles and are grooved and with a purplish tint as the example in these photos shows. Stems of Pale Indian Plantain (A. atriplicifolium) are usually green, without angles, smooth, some minor striations and sometimes with a whitish bloom. Stems of both can be 3 to 9 feet high and unbranched below the floral array.

Leaves: Larger upper leaves of both plants have veins palmately arranged, 3 to 5 main veins. On Great Indian Plantain the upper leaves are fan shaped with pointed teeth and green on both sides. Pale Indian Plantain has rounded triangular shaped upper leaves that are pale beneath. The basal leaves of both are much larger, ovate to heart-shaped, lobed or with large teeth.

The floral array of both have erect tubular whitish flowers of indistinguishable parts, that appear in somewhat flat topped corymbs atop the stems.

The flowers, while being in the Aster family, do not have ray florets, only disc florets which number 5, are bisexual and fertile. The heads are cylindric in shape, those of A. atriplicifolium 8 - 10 mm wide and those of A. reniforme slightly wider, 10 - 13 mm. The corollas are greenish or creamy white, with funnel shaped throats that have 5 pointed spreading lobes. Five stamens have filaments that surround the single style which branches at the tip. Outside the flower head are 5 phyllaries, greenish-white, ovate to oblong-linear in shape which spread when the flower opens. The midveins of the phyllaries of either plant are not winged as are some of the species of Arnoglossum.

Seeds: Fertile flowers produce a dry cypsela, 4 to 5 mm long, brown to purplish in color, with an attached white bristly pappus for wind dispersion. The cypselae of A. reniforme are 4 to 5 ribbed, while those of A. atriplicifolium are 8 to 10 ribbed. See notes below for distribution of these plants.

Habitat: Both species can be found in open woods, roadsides, prairies, where there is full to at least partial sun. A. reniforme prefers a more moist environment than A. atriplicifolium. The root system is rhizomatous.

Names: Botanists have reclassified these plants in recent years. Both species were formerly in the genus "Cacalia". Great Indian Plantain was formerly Cacalia muhlenbergii and Pale Indian Plantain was formerly Cacalia atriplicifolia. The plant census of the Garden simply lists the plant as Cacalia sp. The genus name Arnoglossum is derived from two Greek words, arnos, meaning 'lamb, and glossum, meaning 'tongue' and together are a reference to an old name for plant of the Plantago group. The species names, reniforme, means 'kidney shaped' and is probably a reference to the shape the lower leaves can take; and atriplicifolium refers to the plant having leaves like the Atriplex genus. The author name credited for the current plant classification on both species is ‘H.Rob’ which refers to Harold E. Robinson (1932 -) American botanist, specialist in the Asteraceae. The first person credited with publishing the classification on A. atriplicifolium was '(L.)' which refers Carl Linnaeus (1707-1778), Swedish botanist and the developer of the binomial nomenclature of modern taxonomy. On A. reniforme the first to classify was ‘Hook.’ who was William Hooker, (1785-1865), English Botanist, author, collector, Professor of Botany at the University of Glasgow and the first director of the Royal Botanic Garden at Kew.

See bottom of page for notes on the Garden's planting history, distribution in Minnesota and North America, lore and other references.

Great Indian Plantain full plant drawing pale indian plantain

Above: Photo - The floral array and upper stem of Great Indian Plantain. Drawing is of Pale Indian Plantain from Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York.

Below: 1st photo - the flowers in the array are arranged in corymbs. 2nd photo - The pointed fan shaped leaves with palmate veins of Great Indian Plantain. and the angular stem.

Great Indian Plantain Flowers Great Indian Plantain leaf

Below - Great Indian Plantain: 1st photo - The angular and grooved stem. 2nd & 3rd photos - The flat-topped corymb arrangement of the flowers. Plant photos shown are from the end of June, early July.

Great Indian Plantain stem Great Indian Plantain flower Great Indian Plantain flower

Below: Pale Indian Plantain: 1st photo - lower leaf, 2nd photo - flower umbel prior to flowers opening. 3rd photo - The smooth un-angled stem.

Pale Indian Plantain leaf Pale Indian Plantain flower umbel Pale Indian Plantain Stem

Below: The large floral array with many flower umbels of Great Indian Plantain.

Great Indian Plantain

Below: The seed heads of August beginning to open and release the white bristly seeds of Great Indian Plantain.

Great Indian Plantain Seed heads

Notes:

Notes: As to the Wildflower Garden, neither plant was on Martha Crone's 1951 inventory of plants in the Garden or on Eloise Butler's 1907 plant list. Great Indian Plantain has been introduced since then. Photos of it (above) are from 2009. Great Indian Plantain, A. reniforme, is native to Minnesota, reported in the 7 counties that make up the SE corner of the state where they are across the Mississippi River from Wisconsin's reported native population. Pale Indian Plantain, A. atriplicifolium, while reported as being in the state has no confirmed reporting and the University of Minnesota's Annotated checklist of Minnesota Vascular Plants reports that the evidence of it being in the state may be to a misidentified specimen as there are no specimens in the U of M Herbarium. There is no reported population in Wisconsin that is close the Minnesota, the only reported population is in the eastern section of the state. The only other species of Arnoglossum reported in Minnesota is A. plantagineum, Groove-stemmed Indian Plantain, found only in the southern counties. It has winged phyllaries.

In North America A. artrplicifolium is found in the eastern half of the U.S. except New England. A. reniforme has less distribution, being found from the Mississippi River east to the coast, but no further north than Pennsylvania in the eastern states and not along the Gulf Coast. Neither are known in Canada.

Species rarity: Both A. plantagineum and A. reniforme are on the Minnesota DNR "Threatened List".

References and site links

References: Plant characteristics are generally from sources 1A, 32, W2, W3, W7 & W8 plus others as specifically applied. Distribution principally from W1, W2 and 28C. Planting history generally from 1, 4 & 4a. Other sources by specific reference. See Reference List for details.

©2014

111416