Juncus chlorocephalus

Engelmann

2:485. 1868.

Endemic
Treatment appears in FNA Volume 22.

Herbs, perennial, cespitose, 2–4.5 dm. Culms erect, terete, 1–3 mm diam., smooth. Cataphylls 1, straw-colored or maroon, apex acute. Leaves: basal 1–2, cauline 2–3; auricles 2–3.5 mm, apex rounded, scarious; blade terete, 2–16 cm × 1–2 mm. Inflorescences single heads (rarely cluster of 2–3 heads), 0.5–2 cm; primary bract erect; heads 15–25-flowered, spheric, 11–14 mm diam. Flowers: tepals light green to light pink or white, lanceolate, 3.1–4.2 mm, apex obtuse; stamens 6, anthers 2–3 times filament length. Capsules included, straw-colored, 1-locular, broadly obovoid to ovoid, 2.2–2.5 mm, apex obtuse, valves separating at dehiscence, fertile throughout or only proximal to middle. Seeds oblong, 0.5 mm, not tailed; body clear yellowbrown.


Phenology: Fruiting mid summer–fall.
Habitat: Sandbars, meadows, damp soil in rock outcrops, and talus
Elevation: 1400–3000 m

Discussion

Selected References

None.

Lower Taxa

None.

"-3timesfilamentlength" is not declared as a valid unit of measurement for this property.

... more about "Juncus chlorocephalus"
persistent +
obtuse +, rounded +  and acute +
scarious +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Ralph E. Brooks* +  and Steven E. Clemants* +
Engelmann +
2 cm20 mm <br />0.02 m <br /> (16 cm160 mm <br />0.16 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
clear yellowbrown +
ascending +  and erect +
terete +, involute +  and flat +
straw-colored +
broadly obovoid;ovoid +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
maroon +  and straw-colored +
Calif. +  and Nev. +
1400–3000 m +
arranged +  and cluster +
headlike +
Sandbars, meadows, damp soil in rock outcrops, and talus +
15-25-flowered +
1.1 cm11 mm <br />0.011 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
spheric +
pseudoaxillary +  and terminal +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
cauline +  and basal +
3 +  and 1 +
green;brown or purplish black +
persistent +
Fruiting mid summer–fall. +
parietal +  and axile +
Abhandlungen herausgegeben vom naturwissenschaftlichen Vereine zu Bremen +
not tailed;oblong +
0.5 cm5 mm <br />0.005 m <br /> (?) +
green;brown or purplish black +
persistent +
generally longer +
Juncus sect. Septati +
Juncus chlorocephalus +
Juncus subg. Septati +
species +
light green +  and light pink or white +
lanceolate +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
only proximal;middle +
herb +  and cespitose +