Juncus macrandrus

Coville in L. Abrams and R. S. Ferris

in L. Abrams and R. S. Ferris,Illustrated Flora of the Pacific States 1: 367, fig. 900. 1923.

Endemic
Treatment appears in FNA Volume 22.

Herbs, perennial, rhizomatous, 2.6–6.5 dm. Rhizomes 1.5–3.5 mm diam. Culms erect, 1.5–3 mm diam. Cataphylls 2, chestnut-brown, apex acute. Leaves: basal 2, cauline 1–2, light green; auricles absent; blade 2.5–20.5 cm × 2–3 mm. Inflorescences panicles of 10–50 heads, 4–10 cm, ascending to erect branches; primary bract erect; heads 3–22-flowered, obovoid to hemispheric, 5–11 mm diam. Flowers: tepals dark-brown to purplish brown, lanceolate, 3–4 mm, nearly equal; outer tepals acuminate, mucro subulate; inner tepals acuminate or cuspidate, mucro subulate; stamens 6, anthers 2.5–3 times filament length. Capsules included, chestnut-brown, 1-locular, oblong, 2.3–3.2 xx–xx mm (including beak), apex acuminate proximal to beak, beak slightly exserted. Seeds obovoid, 0.5–0.6 mm, not tailed.


Phenology: Fruiting summer.
Habitat: Wet places, montane conifer forests
Elevation: 1700–2900 m

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Juncus macrandrus"
persistent +
separating +
acuminate +  and acute +
Ralph E. Brooks* +  and Steven E. Clemants* +
Coville in L. Abrams and R. S. Ferris +
Juncus sect. Ensifolii +
2.5 cm25 mm <br />0.025 m <br /> (20.5 cm205 mm <br />0.205 m <br />) +
ensiform +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
chestnut-brown +
chestnut-brown +
1.5mm;3mm +
flattened +
1700–2900 m +
arranged +  and cluster +
headlike +
Wet places, montane conifer forests +
3-22-flowered +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
obovoid +  and hemispheric +
pseudoaxillary +  and terminal +
ascending +  and erect +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
cuspidate +  and acuminate +
cauline +  and basal +
3 +  and 1 +
subulate +
green;brown or purplish black +
persistent +
Fruiting summer. +
parietal +  and axile +
in L. Abrams and R. S. Ferris,Illustrated Flora of the Pacific States +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
not tailed;obovoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
green;brown or purplish black +
persistent +
generally longer +
Juncus macrandrus +
Juncus subg. Ensifolii +
species +
dark-brown +  and purplish brown +
lanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +