Difference between revisions of "Carex communis"

L. H. Bailey

Mem. Torrey Bot. Club 1: 41. 1889.

Treatment appears in FNA Volume 23. Treatment on page 539. Mentioned on page 532, 533, 534, 536.
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name=Carex communis
 
name=Carex communis
|author=
 
 
|authority=L. H. Bailey
 
|authority=L. H. Bailey
 
|rank=species
 
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|publication year=1889
 
|publication year=1889
 
|special status=
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V23/V23_1014.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V23/V23_1014.xml
 
|genus=Carex
 
|genus=Carex
 
|section=Carex sect. Acrocystis
 
|section=Carex sect. Acrocystis

Revision as of 20:04, 16 December 2019

Plants densely cespitose; rhizomes ascending, reddish brown to purplish brown, 0–3 mm, stout or absent. Culms 20–60 cm, scabrous distally; bases (remnants of old leaves) slightly or not fibrous. Leaf blades green, 1.8–5 mm wide, widest leaves 3+ mm wide, herbaceous, papillose to scabrous abaxially, papillose to scabrous adaxially. Inflorescences usually with both staminate and pistillate spikes, rarely only pistillate; peduncle of staminate spike 0.7–9.7 mm; proximal nonbasal bracts leaflike, usually shorter than inflorescences. Spikes: proximal pistillate spikes 2–3 (basal spike 0); cauline spikes usually clearly separated, with 3–10 perigynia; staminate spikes 3.1–15.5 × 1–2.5 mm. Scales: pistillate scales pale brown to dark reddish brown, often with broad white margins, ovate to lanceolate, 2.5–4.8 × 1.2–2 mm, shorter than to exceeding perigynia, apex obtuse to acuminate or short-awned; staminate scales elliptic to obovate, 3.1–5.2 × 0.7–2.2 mm, apex obtuse to acuminate or short-aristate. Anthers 1.8–3 mm. Perigynia pale green, veinless, globose to obovoid, 2.7–3.8 × 1.2–2.6 mm, as long as wide; beak usually straight, occasionally slightly bent, pale green, 0.5–2.3 mm, weakly ciliate-serrulate, apical teeth 0.1–0.5 mm. Stigmas 3. Achenes pale brown, globose to obovoid, round to obtusely trigonous in cross section, 1.4–2.3 × 1–1.4 mm.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Apical teeth of perigynium beak usually 0.1–0.2(–0.3) mm; pistillate scales usually 1.6 mm wide or less. Carex communis var. communis
1 Apical teeth of perigynium beak usually more than 0.2 mm; pistillate scales usually more than 1.6 mm wide. Carex communis var. amplisquama