Difference between revisions of "Carex retroflexa"
Sp. Pl. 4(1): 235. 1805.
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+ | |special_status={{Treatment/ID/Special_status | ||
+ | |code=F | ||
+ | |label=Illustrated | ||
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− | |source xml=https:// | + | |source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V23/V23_487.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Phaestoglochin | |section=Carex sect. Phaestoglochin |
Revision as of 22:34, 27 May 2020
Plants without conspicuous rhizomes. Culms 10–75 cm, 1.3–1.8 mm wide basally, 0.5–0.8 mm wide distally. Leaves: sheaths tight, green, fronts hyaline; ligules less than 2 mm, wider than long; widest leaf blades 1.4–3 mm wide. Inflorescences with 3–9 spikes, 1–4 cm × 5–9 mm; proximal internodes 1–3 times as long as proximal spikes; proximal bracts to 6 cm; spikes with 3–10 spreading perigynia. Pistillate scales hyaline with green midvein, ovate, 2–3 × 1.4–1.6 mm, 3/4 length to equaling perigynia, apex acute to acuminate. Anthers 1.5–2.3 mm. Perigynia green to pale yellow, faces weakly veined, 2.5–3.2 × 1.2–1.8 mm, base of body spongy, thickened and longitudinally striate adaxially, spongy region 0.8–1.5 mm, margins entire, serrulate distally; beak 0.7–1 mm, apical teeth 0.1–0.3 mm. Stigmas straight or slightly twisted, 0.05 mm wide. Achenes ovate-circular, 1.3–1.6 × 1.3–1.5 mm. 2n = 40.
Phenology: Fruiting spring.
Habitat: Thickets and openings in dry deciduous forests
Elevation: 10–500 m
Distribution
![V23 487-distribution-map.jpg](/w/images/e/e5/V23_487-distribution-map.jpg)
Ont., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Mass., Mich., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Va., W.Va.
Discussion
Records of Carex retroflexa and C. texensis are not always clearly distinguished, consequently some reports of C. retroflexa may refer to C. texensis.
Selected References
None.