Difference between revisions of "Carex laxiflora"
in J. Lamarck et al., Encycl. 3: 392. 1792.
FNA>Volume Importer |
FNA>Volume Importer |
||
| Line 12: | Line 12: | ||
|name=Carex laxiflora var. serrulata | |name=Carex laxiflora var. serrulata | ||
|authority=F. J. Hermann | |authority=F. J. Hermann | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Cyperaceae;Carex;Carex sect. Laxiflorae;Carex laxiflora | |hierarchy=Cyperaceae;Carex;Carex sect. Laxiflorae;Carex laxiflora | ||
| Line 36: | Line 37: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Carex laxiflora | name=Carex laxiflora | ||
| − | |||
|authority=Lamarck in J. Lamarck et al. | |authority=Lamarck in J. Lamarck et al. | ||
|rank=species | |rank=species | ||
| Line 51: | Line 51: | ||
|publication year=1792 | |publication year=1792 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V23/V23_798.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Laxiflorae | |section=Carex sect. Laxiflorae | ||
Revision as of 20:11, 16 December 2019
Culms densely tufted, lateral or central, ascending or lax to decumbent, 39–47 cm × 0.8–2 mm. Leaves: basal sheaths light brown; sheaths 6–22 mm; blades ascending, midrib and 2 lateral veins developed, occasionally slightly corrugated, 19–25 cm × 5–26 mm, blades of overwintering leaves smooth or, rarely, sparsely papillose abaxially. Inflorescences: peduncles of proximal spikes erect, 0–3.4 cm, of lateral spikes 1.4–3.3(–5.3) times as long as spikes they subtend; of terminal spikes 1–2.2 cm. Bracts 7.2–17.5 cm × 2–8 mm, bract blade of distal lateral spikes linear, narrower than spikes, widest bract blade of distalmost lateral spike 0.5–3.4 mm wide. Spikes (3–)4 per culm; lateral spikes 9–33 × 3.2–4 mm; terminal spike linear to clavate, 23–24(–34) × 1.5–3 mm. Pistillate scales 2.5–3 × 1.2–1.5 mm, apex acute or apiculate. Staminate scales 3–3.5 × 1–1.5 mm, oblong-ovate, margins white-hyaline or brownish, apex obtuse or acute. Anthers 2.6–3 mm. Perigynia 3–20 per spike, usually separate, ratio of longer lateral spike length to perigynia number 1.9–3.4, ascending, conspicuously (22–)25–32-veined, (2.6–)3.2–4.1(–4.6) × 1.2–1.6 mm; beak straight, 0.5–1.4 mm. Achenes broadly ellipsoid, 1.8–2.2(–3.4) × 1–1.4 mm. 2n = 40.
Phenology: Fruiting spring–early summer.
Habitat: Dry or moist, deciduous or mixed deciduous-evergreen forests, higher elevations southward
Elevation: 0–1000 m
Distribution
N.S., Ont., Que., Ala., Ark., Conn., Del., Ga., Ill., Ind., Ky., Maine, Md., Mass., Mich., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.
Discussion
The Carex laxiflora complex contains a wide array of phenotypic variation and deserves further research. F. J. Hermann (1938) proposed the name C. laxiflora var. serrulata; however, among the numerous specimens of C. laxiflora we studied, the key characteristic of ciliate-serrulate bract-sheaths varied greatly.
Selected References
None.