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Dichanthelium hirstii (Swallen) Kartesz. Hirst Brothers' Witchgrass. Phen: Jun-Sep. Hab: Pond-cypress savannas, limesink depressions, and other seasonally ponded depression wetlands. Dist: This distinctive species is known from only seven sites: two in NC, one in DE, two in NJ (one not seen since 1992), and two populations in GA (one considered historical, the other rediscovered in 2015; see McAvoy, Patrick, & Kruse [2015]).

Origin/Endemic status: Endemic

Taxonomy Comments: Described in 1961 (Swallen 1961), it is treated by some taxonomists as part of the D. aciculare group and by others as part of the D. dichotomum group; its affinities appear to lie with the former. See Schuyler (1996) for a discussion of the taxonomic distinctiveness of this species. The occurrence of this species in NC is documented in LeBlond & Sorrie (2001). A further assessment of the taxonomy and history of D. hirstii is found in LeBlond et al. (2017).

Synonymy: = K1, K3, K4, LeBlond (2017a) in Weakley et al (2017), LeBlond et al (2017); = n/a – RAB; = Panicum hirstii Swallen – Schuyler (1996); < Dichanthelium dichotomum (L.) Gould ssp. roanokense (Ashe) Freckmann & Lelong – FNA25; < Panicum aciculare Desv. ex Poir. – C

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: OBL

Heliophily ?: 9

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image of plant© Kathleen Walz | Original Image ⭷
image of plant© Kathleen Walz | Original Image ⭷
image of plant© Kathleen Walz | Original Image ⭷
image of plant© William A. McAvoy, vernal spikelet | Original Image ⭷
image of plant© Kathleen Walz | Original Image ⭷
image of plant© Richard LeBlond CC-BY | Original Image ⭷
image of plant© Richard LeBlond CC-BY | Original Image ⭷
image of plant© William A. McAvoy, vernal spikelet | Original Image ⭷
image of plant© Kathleen Walz | Original Image ⭷

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