Difference between revisions of "Rhynchospora nivea"
Linnaea 37: 527. 1872.
FNA>Volume Importer |
imported>Volume Importer |
||
| (3 intermediate revisions by 2 users not shown) | |||
| Line 6: | Line 6: | ||
|place=37: 527. 1872 | |place=37: 527. 1872 | ||
|year=1872 | |year=1872 | ||
| + | }} | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
}} | }} | ||
|basionyms= | |basionyms= | ||
| Line 11: | Line 18: | ||
|name=Dichromena diphylla | |name=Dichromena diphylla | ||
|authority=Torrey | |authority=Torrey | ||
| + | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Dichromena nivea | |name=Dichromena nivea | ||
|authority=(Boeckeler) Britton | |authority=(Boeckeler) Britton | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Cyperaceae;Rhynchospora;Rhynchospora nivea | |hierarchy=Cyperaceae;Rhynchospora;Rhynchospora nivea | ||
| Line 38: | Line 47: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Rhynchospora nivea | name=Rhynchospora nivea | ||
| − | |||
|authority=Boeckeler | |authority=Boeckeler | ||
|rank=species | |rank=species | ||
| Line 52: | Line 60: | ||
|publication title=Linnaea | |publication title=Linnaea | ||
|publication year=1872 | |publication year=1872 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_372.xml |
|genus=Rhynchospora | |genus=Rhynchospora | ||
|species=Rhynchospora nivea | |species=Rhynchospora nivea | ||
Latest revision as of 20:40, 5 November 2020
Illustrator:
Copyright:
Plants perennial, cespitose, 10–40 cm, wiry; rhizomes absent. Culms erect to spreading-ascending, leafybased, trigonous or compressed, ribbed. Leaves exceeded by scape; blades narrowly linear to filiform, 0.2–2 mm wide, apex tapering, trigonous. Inflorescences terminal, solitary, headlike, dense, white, leafyinvolucrate, hemispheric to globose, 0.5–1.5 cm wide; involucral bracts (0–)1–4, ascending to recurved, green, (0.7–)2–5(–6) cm × 0.2–2 mm. Spikelets white, ovoid, 5–7 mm; fertile scales several, boat-shaped, 2.5–3.5 mm, keel curved, not sharp. Flowers: perianth absent. Fruits 0.8–1 mm; body yellow to near black, broadly pyriform-obovoid, tumidly lenticular, 0.5–0.8 × 0.5–0.8 mm, margin narrow, flowing into tubercle; surfaces transversely sharply wavyrugose, ridges bordered by rows of fine, linear, vertical lattices; tubercle depressedtriangular, lunate-based, shortbeaked 0.2(–0.3) mm, gray-crustaceous.
Phenology: Fruiting spring–fall.
Habitat: Low, open, moist to wet, basic substrates of fens, meadows, seeps, and shores, limestone districts
Elevation: 0–500 m
Discussion
Rhynchospora nivea, of the “Dichromena” of North America, is the smallest fruited and most slender and has the fewest and shortest involucral bracts (in some plants the bract is entirely absent). Involucral bracts of R. nivea are almost entirely green.
Selected References
None.