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Published In: Bulletin of the Torrey Botanical Club 21(5): 228. 1894. (Bull. Torrey Bot. Club) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 8/28/2009)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Native


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10. Poa wolfii Scribn. (meadow bluegrass)

Pl. 179 c, d; Map 734

Plants perennial, without rhizomes, forming tufts or small clumps. Flowering stems 30–80 cm long, erect, circular in cross‑section, glabrous. Leaf sheaths rounded or nearly so, glabrous, the ligule 1–2 mm long, rounded on the margin. Leaf blades 3–20 cm long, 1–2 mm wide, flat, glabrous or nearly so. Inflorescences 8–20 cm long, open, the lowermost nodes with (1)2 or 3 branches, these spreading at maturity. Spikelets 4–6 mm long, with 2–4 fertile florets. Lower glume 2.5–3.5 mm long, lanceolate to narrowly ovate, bluntly pointed at the tip, with broad, thin margins, 3‑nerved, roughened along the midnerve. Upper glume 3.0–3.8 mm long, narrowly ovate, bluntly pointed at the tip, with broad, thin margins, 3‑nerved, roughened along the midnerve. Lemmas 2.5–4.5 mm long, elliptic, sharply pointed at the tip, 5‑nerved, short‑hairy along the keel and the outermost pair of lateral nerves, and with a tuft of long, cobwebby hairs at the base. Anthers 1.0–1.4 mm long. Fruits 1.5–2.2 mm long, reddish brown. 2n=28. April–June.

Scattered nearly throughout Missouri, but apparently absent from portions of the Glaciated Plains and Mississippi Lowlands Divisions (Ohio west to Minnesota, Iowa, and Missouri; reports from Virginia and Nebraska apparently are based on misdetermined specimens). Bottomland forests, mesic upland forests, and banks of streams; rarely in moist, disturbed areas along logging roads.

Reports of P. alsodes A. Gray and P. autumnalis Vahl in the earlier literature were based upon misdetermined specimens of P. wolfii (Steyermark, 1963).



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