Aristida

Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Contains 8 accepted taxa overall.

Family:	Poaceae
Common Name:

Classification

Division
Class
Sub Class
Order	Poales
Family	Poaceae
Genus	*Aristida*

Citation

Citation	**
Basionym:	**
Type:	**

** Not applicable or data not available.

Species

Scientific Name	Common Name	Status
Aristida adscensionis	six-weeks threeawn	Not Native, Not Persisting, SNA (State Rank), G5 (Global Rank)
Aristida basiramea	fork-tipped threeawn	Unknown Native Status, Persisting, S2S3 (State Rank), G5 (Global Rank)
Aristida dichotoma var. dichotoma	church mouse threeawn	Native, Persisting, S5 (State Rank), G5 (Global Rank), CoC: 3
Aristida geniculata	Kearney’s threeawn	Native, Persisting, S1 (State Rank), G5T5? (Global Rank), CoC: 5
Aristida longespica	slender threeawn	Native, Persisting, S1 (State Rank), G5T5? (Global Rank), CoC: 8
Aristida oligantha	prairie threeawn, oldfield threeawn	Not Native, Persisting, SNA (State Rank), G5 (Global Rank)
Aristida purpurascens var. purpurascens	arrow feather threeawn	Native, Persisting, SNR (State Rank), G5 (Global Rank), CoC: 5
Aristida tuberculosa	seaside threeawn	Native, Persisting, SNR (State Rank), G5 (Global Rank), CoC: 7

For more information, contact: David Werier or Kyle Webster

Web Development: USF Water Institute

A member of the University of South Florida family of PlantAtlas.org sites

Citation Information:

Werier, David, Kyle Webster, Troy Weldy, Andrew Nelson, Richard Mitchell†, and Robert Ingalls†. 2025 New York Flora Atlas. [S. M. Landry and K. N. Campbell (original application development), USF Water Institute. University of South Florida]. New York Flora Association, Albany, New York.

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Definition: Vouchered Specimen

A voucher specimen is a pressed and thoroughly dried plant sample deposited in a herbarium, and is intended to be a permanent record supporting research purposes. A voucher may be a record of a plant's occurrence in a particular area, or a specific example of a plant used in a scientific investigation.

Proper vouchers display all the necessary attributes for complete identification of the plant, and are to be accompanied by accurate locality, habitat, collection time, and collector data.

Only plant populations vouchered by specimens deposited in Index Herbariorum (http://sweetgum.nybg.org/science/ih/) recognized herbaria are represented on this map.