Narrow-leaved Silkgrass Pityopsis graminifolia (Michaux) Nuttall var. latifolia (Fernald) Semple & Bowers    Synonyms: Chrysopsis graminifolia var. latifolia, Grass-leaved Golden-aster, Heterotheca nervosa var. nervosa, Narrowleaf Silk-grass.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Asterales   >   Family Asteraceae   >   Genus Pityopsis   

Status:

Common in sand hill habitats that border the Pocomoke River and Nassawango Creek regions of Worcester and Wicomico Counties. Uncommon in sandy interior habitats of Anne Arundel and Prince George's County (Patuxent Research Refuge).

Taxonomically in limbo. The Pityopsis graminifolia complex has been split into several different species by various authors. While the official Maryland State Vascular Plant List (Knapp, Naczi) lists Pityopsis graminifolia var. graminifolia as the only species present in the state, the Weakley Flora of the Southeastern United States (A. Weakley, 2020) lists two species as occurring: Pityopsis aspera var. adenolepis and Pityopsis nervosa. Further research is needed.

Description:

Very easy to differentiate from other yellow asters by the distinctive foliage. The foliage resembles grass, but with a silvery sheen that is caused by dense hairs that grows on the leaves and stem.

Relationships:

Narrow-leaved Silkgrass is an important plant for many rare pollen specialist bees that fly in the late season (August-October).

There are 40 records in the project database.

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Narrow-leaved Silkgrass blooming in Worcester Co., Maryland (10/5/2016). Photo by Jim Stasz. (MBP list)

Narrow-leaved Silkgrass montage photographed in Anne Arundel Co., Maryland (9/12/2015). Photo by Bill Harms. (MBP list)

Narrow-leaved Silkgrass in Prince George's Co., Maryland (9/18/2016). Photo by Rod Simmons. (MBP list)

Narrow-leaved Silkgrass in Wicomico Co., Maryland (9/2/2017). Photo by Bill Hubick. (MBP list)

Narrow-leaved Silkgrass in Worcester Co., Maryland (8/28/2013). Photo by Jim Stasz. (MBP list)

Narrow-leaved Silkgrass in Worcester Co., Maryland (10/22/2016). Photo by Ashley Bradford. (MBP list)

Narrow-leaved Silkgrass in Prince George's Co., Maryland (9/18/2016). Photo by Rod Simmons. (MBP list)

Narrow-leaved Silkgrass in Worcester Co., Maryland (9/14/1982). Photo by Jim Stasz. (MBP list)

Narrow-leaved Silkgrass blooming in Wicomico Co., Maryland (9/24/2017). Photo by Jim Stasz. (MBP list)

Narrow-leaved Silkgrass in Worcester Co., Maryland (10/22/2016). Photo by Ashley Bradford. (MBP list)

Narrow-leaved Silkgrass in Worcester Co., Maryland (10/22/2016). Photo by Ashley Bradford. (MBP list)

Narrow-leaved Silkgrass in Worcester Co., Maryland (7/22/2018). Photo by Bill Hubick. (MBP list)


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