Symphyotrichum depauperatum (formerly Aster depauperatus), commonly known as serpentine aster or starved aster,[4][5] is a rare species in the family Asteraceae adapted to serpentine barrens, an ecosystem with a high concentration of toxic metals in the soil. It has been found in Pennsylvania, Maryland, and on some diabase glades in North Carolina. It grows to 50 centimeters (1+3⁄4 feet) and has white ray florets surrounding a center of yellow disk florets.
Symphyotrichum depauperatum is a perennial, herbaceous plant that may reach up to 50 centimeters (1+3⁄4 feet) tall, with 1–3 stems. The leaves are narrow and generally 2–4 centimeters (3⁄4–1+1⁄2 inches) long. The plant produces numerous flower heads in branched arrays, each head with 7–14 white or, rarely, pink ray florets surrounding 7–17 yellow disk florets.[4]
A plant in flower
Flowers
Growth habit
Within the genus Symphyotrichum, S. depauperatum has been classified in subgenus Symphyotrichum section Symphyotrichum subsection Porteriani.[6] Its full name with author citation is Symphyotrichum depauperatum (Fernald) G.L.Nesom.[3] It was first described by American botanist Merritt Lyndon Fernald in 1908 as Aster depauperatus.[7]
S. depauperatum is adapted to serpentine barrens, an ecosystem with a high concentration of toxic metals in the soil. It has been found in Baltimore[2] and Cecil Counties, Maryland;[1] Granville County, North Carolina;[2] and, Chester, Delaware, and Lancaster Counties, Pennsylvania.[1]
Serpentine aster has been called a "flagship species" of the unique serpentine ecosystem and was once thought to be endemic to these barrens,[8] but it also has been found to occur in a disjoint population on diabase glades in Granville County, North Carolina.[9]
Symphyotrichum depauperatum is classified by the state of Pennsylvania as a threatened species because its range is restricted to a few limited areas, and the majority of its populations occur on sites threatened by quarrying, housing development, and industrial development.[10]
As of August 2022, NatureServe listed it as Globally Imperiled (G2); Critically Imperiled (S1) in Maryland and North Carolina; and, Imperiled (S2) in Pennsylvania. NatureServe's most recent review of S. depauperatum's global status was 3 October 1997.[1]
Symphyotrichum depauperatum (formerly Aster depauperatus), commonly known as serpentine aster or starved aster, is a rare species in the family Asteraceae adapted to serpentine barrens, an ecosystem with a high concentration of toxic metals in the soil. It has been found in Pennsylvania, Maryland, and on some diabase glades in North Carolina. It grows to 50 centimeters (1+3⁄4 feet) and has white ray florets surrounding a center of yellow disk florets.
Symphyotrichum depauperatum est rara Asterearum species, ad sterilitates serpentinas (Anglice serpentine barrens) accommodata, ad oecosystema cui est magna metallorum toxiferorum in solo pars.
Planta in viginti ex viginti-sex Civitatum Foederatarum orientalium sterilitatibus serpentinis fit, quam ob causam flagship species? huius oecosystematis unici appellata est. Ea olim putabatur in his sterilitatibus endemica, sed ea etiam in singula colonia disiuncta inter diabase glades? in Carolina Septentrionali habitare nuper observata est.[1]
Symphyotrichum depauperatum a civitate Pennsilvania species periclitata classificatur quia eius distributio in paucis regionibus finitis circumscribitur, et plurimae ex eius populationibus in sitibus ab excidiendo,? auctu domuum,? et auctu industriarum periclicatae fiunt.[2]
Situs scientifici: Tropicos • GRIN • ITIS • Plant List • NCBI • Biodiversity • Encyclopedia of Life • Plant Name Index • Flora of North America • USDA Plants Database Symphyotrichum depauperatum est rara Asterearum species, ad sterilitates serpentinas (Anglice serpentine barrens) accommodata, ad oecosystema cui est magna metallorum toxiferorum in solo pars.
Symphyotrichum depauperatum là một loài thực vật có hoa trong họ Cúc. Loài này được (Fernald) G.L.Nesom miêu tả khoa học đầu tiên.[1]
Symphyotrichum depauperatum là một loài thực vật có hoa trong họ Cúc. Loài này được (Fernald) G.L.Nesom miêu tả khoa học đầu tiên.
