Difference between revisions of "Cyperus pseudothyrsiflorus"
Rhodora 99: 330. 1998.
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|name=Cyperus uniflorus var. pseudothyrsiflorus | |name=Cyperus uniflorus var. pseudothyrsiflorus | ||
|authority=Kükenthal | |authority=Kükenthal | ||
| + | |rank=variety | ||
|publication_title=in H. G. A. Engler, Pflanzenr. | |publication_title=in H. G. A. Engler, Pflanzenr. | ||
|publication_place=101[IV,20]: 521. 1936 | |publication_place=101[IV,20]: 521. 1936 | ||
| Line 36: | Line 37: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Cyperus pseudothyrsiflorus | name=Cyperus pseudothyrsiflorus | ||
| − | |||
|authority=(Kükenthal) J. Rich. Carter & S. D. Jones | |authority=(Kükenthal) J. Rich. Carter & S. D. Jones | ||
|rank=species | |rank=species | ||
| Line 51: | Line 51: | ||
|publication year=1998 | |publication year=1998 | ||
|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_318.xml |
|genus=Cyperus | |genus=Cyperus | ||
|subgenus=Cyperus subg. Cyperus | |subgenus=Cyperus subg. Cyperus | ||
Revision as of 20:07, 16 December 2019
Herbs, perennial, cespitose, rhizomatous. Culms trigonous, base thickened, tuberous, 15–40 cm × 2–2.6 mm, glabrous. Leaves flat to V-shaped, 10–30 cm × (3–)4–5.8 mm. Inflorescences: spike 1, densely oblong to ellipsoid, 10–20 × 10–20 mm; rays 4–12, 10–20 cm bracts 3–6, horizontal to ascending at 30°, V-shaped, 3–15 cm × (3–)4(–5.8) mm; rachilla deciduous, wings persistent, 0.5–0.7 mm wide. Spikelets (5–)10–20(–30), linear to oblong, quadrangular, (2.2–)4–12(–16) × 0.7–1.2 mm, densly packed on rachis with 11–21 spikelets per 5 mm rachis; distal spikelet spreading or ascending; floral scales persistent, 1–5, appressed, laterally whitish to reddish brown, medially green, narrowly oblong to ovate, laterally 3–6-ribbed, 2.4–3.4 × 1.6–2 mm, apex rounded to ± acute, entire, mucronate, mucro 0.1–0.3 mm; sterile terminal scale, involute, only 0.4–0.6 mm wide with mucro 0.2–0.5 mm. Flowers: anthers (0.3–)0.4–0.7 mm; styles 0.4–0.5 mm; stigmas 0.5–0.9 mm. Achenes light brown, sessile to slightly stipitate, ellipsoid to narrowly ellipsoid to narrowly obovoid, 1.4–1.9 × 0.5–0.75 mm, apex slightly apiculate, surfaces puncticulate.
Phenology: Fruiting mid summer–early fall (Jul–Sep).
Habitat: Damp, disturbed soils, croplands
Elevation: 0–1000 m
Discussion
Selected References
None.