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Asteraceae
Parthenium

not marked as a favorite taxon Parthenium integrifolium Linnaeus var. mabryanum Mears. Common name: Sandhill Wild Quinine, Mabry's Wild Quinine, Carolina Wild Quinine. Phenology: Late May-Nov (blooming strongly in response to fire). Habitat: Longleaf pine sandhills, Piedmont oak-pine woodlands, and other sunny situations in dry soils (roadsides). Distribution: Nc. SC, e. NC, and se. VA, extending into the e. Piedmont of NC in dry sandy soils around granitic flatrocks or in (formerly) fire-maintained pine, oak-pine, and oak woodlands.

Glossary (beta!)

Section: Partheniastrum.

Origin/Endemic status: Endemic

Taxonomy Comments: Var. mabryanum is the characteristic variety of P. integrifolium in the Sandhills of NC. Mears also named a new species, P. radfordii Mears, to accommodate sinuate-lobed Parthenium from the fall-line sandhills of NC and SC, which he also believed to be later-blooming (Aug-Nov) than other Parthenium. Extensive observations in the Sandhills of NC show that "P. radfordii" consistently co-occurs in mixed populations with P. integrifolium var. mabryanum, and that flowering is triggered by fire. These sinuate-lobed plants are best considered a form of var. mabryanum.

Synonymy ⓘ: = Va; < Parthenium integrifolium L. — C, F, FNA21, G, K4, S, SE1, W, Rollins (1950); < Parthenium integrifolium L. var. integrifolium — RAB; > Parthenium integrifolium L. var. mabryanum Mears — Mears (1975); > Parthenium radfordii Mears — Mears (1975). Basionym: Parthenium integrifolium L. var. mabryanum Mears 1975

Links to other floras: < Parthenium integrifolium - FNA21

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Heliophily ⓘ: 8

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image #1 of Parthenium integrifolium var. mabryanum© Bruce A. Sorrie | Original Image ⭷
image #2 of Parthenium integrifolium var. mabryanum© Bruce A. Sorrie | Original Image ⭷
image #3 of Parthenium integrifolium var. mabryanum© Alan Weakley source
image #4 of Parthenium integrifolium var. mabryanum© Alan Weakley source
image #5 of Parthenium integrifolium var. mabryanum© Alan Weakley source
image #6 of Parthenium integrifolium var. mabryanum© Alan Weakley source
image #7 of Parthenium integrifolium var. mabryanum© Bruce A. Sorrie | Original Image ⭷

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Horticultural Information

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Height: 3-4 ft

plant sale text: Wild Quinine is not often offered for sale, though it is easily grown. This SE native plant produces upright corymbs of milky white flowers that are attractive for many weeks' time. Its flowers are a good nectar source for butterflies and other pollinators. Its foliage provides a handsome, rugged contrast to the white flowers. This variety grows in the sandhills and prefers dry sandy soils. It is found in forest openings or woodlands and fire-maintained communities. The genus Parthenium supports up to 15 lepidoptera species.

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native range: NC, SC, VA



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