Panicum virgatum

L. (1753)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Poales Family: Poaceae Genus: Panicum

switchgrass

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Description

Key Characters:

Growth Form: Rhizomatous perennials 60–200 cm tall.

Stems: Rhizomes well–developed, scaly.

Roots:

Leaves: Leaves simple. Alternate. Blades 10–60 cm long, 0.3–1.5 cm wide. Surfaces usually glabrous. Margins entire. Sheathing, ligule a ciliate membrane, 1.8–3.2 mm long. Stipules absent.

Flowers: Flowers in panicles 15–55 cm long; spikelets 4–5.5 mm long, ovoid, acuminate, glabrous; first glume 2–4 mm long, ⅔–¾ as long as spikelet, 5–nerved, acuminate, second glume 5–7–nerved, longer than first lemma; first floret staminate, first lemma 5–7–nerved, first palea as long as first lemma; second floret 2.8–3.4 mm long, obtuse, glossy, smooth; anthers 2–3 mm long. Stamens 3. Ovary superior.

Fruit: Fruit a caryopsis

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Images

Uses and Culture

USES

Natural History

Statewide Status

Extirpated

Island Status

O'ahu Extirpated

Dispersal Agents

Wind

Vegetative Reproduction

Pollinators

Specimens

Bibliography

Name Published In: Sp. Pl.: 59 (1753)

Other References

Wagner et al. 1990:1574 (O); Snow & Lau 2010:52 (O? [2 spms., Poamoho experimental station, 1938 & 1940])

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Panicum virgatum Poamoho Volunteer with Andropogon furcatus Preserved_Specimen Oahu BISH 1938-09-01
2 Panicum virgatum Honolulu, Pensacola St., Hawaii Agriculture Experimental Station Grass in cultivated field Preserved_Specimen Wong, R. Oahu BISH 1941-01-08
3 Panicum virgatum Waialua, Poamoho, Hawaiian Agricultural Experimental Station farm In experimental plot. Preserved_Specimen Hosaka, E.Y. 2541 Oahu BISH 1940-10-17