Difference between revisions of "Carex sect. Leucoglochin"
Fl. Belg., 146. 1827.
FNA>Volume Importer |
imported>Volume Importer |
||
| (3 intermediate revisions by 2 users not shown) | |||
| Line 11: | Line 11: | ||
|name=Carex sect. Orthocerates | |name=Carex sect. Orthocerates | ||
|authority=Koch | |authority=Koch | ||
| + | |rank=section | ||
}} | }} | ||
|hierarchy=Cyperaceae;Carex;Carex sect. Leucoglochin | |hierarchy=Cyperaceae;Carex;Carex sect. Leucoglochin | ||
| Line 59: | Line 60: | ||
|publication year=1827 | |publication year=1827 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_996.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Leucoglochin | |section=Carex sect. Leucoglochin | ||
Latest revision as of 21:44, 5 November 2020
Plants cespitose or not, short to long rhizomatous. Culms pale brown at base. Leaves: basal sheaths not fibrous; sheath fronts membranous; blades V-shaped in cross section when young, glabrous. Inflorescence 1 spike per culm; bracts absent; spike androgynous. Proximal pistillate scales soon deciduous, less than 10 mm, shorter than perigynium, apex obtuse or subacute. Perigynia at first erect, becoming deflexed, obscurely veined, very obliquely substipitate, lance-subulate to narrowly elongate-oblong, almost round in cross section, base tapered and spongy, apex tapering gradually to beak, glabrous; beak less than 2 mm, orifice truncate. Stigmas 3. Achenes narrowly oblong or narrowly oblong-lanceoloid, trigonous with sides concave proximally, much smaller than bodies of perigynia; style persistent.
Distribution
Widespread in arctic, boreal, and alpine regions of North America and Eurasia, w and s South America, c Asia.
Discussion
Species 5 or 6 (2 in the flora).
Members of Carex sect. Leucoglochin are further characterized by pistillate scales that fall very early.
Selected References
None.
Lower Taxa
Key
| 1 | Perigynia 3.4–4.7 mm (excluding rachilla); rachilla exserted 0.5–2.8 mm from orifice of beak, exceeding style, style not exserted; pistillate scales (except the proximal) 2.4–3 mm; proximal leaves blade-bearing. | Carex microglochin |
| 1 | Perigynia (5–)5.9–7.8 mm; rachilla vestigial, style exserted; pistillate scales 3.7–5.9 mm; proximal leaves bladeless. | Carex pauciflora |