Juncus capillaris

F. J. Hermann

Leaflets of Western Botany 5: 116. 1948.

Common names: Hair-stemmed dwarf rush
Endemic
Treatment appears in FNA Volume 22.

Herbs, annual, cespitose, 0.09–0.6 dm. Culms to 20. Leaves to 2.2 cm. Inflorescences headlike clusters, each with 1–2 flowers; bracts subtending inflorescence 2–4, ovate, inconspicuous, 0.8–1.5 mm, membranous, apex acute. Flowers: tepals 4–6, chestnut-brown to black, 1.8–2.8 × 0.8–1.5 mm; inner series usually slightly longer than outer, apex acuminate to attenuate; stamens 2–3, filaments 0.6–1.1 mm, anthers 0.3–0.4 mm; style 0.1–0.3 mm, stigma 0.4–0.6 mm. Capsules tan or apex reddish, 2– or 3-locular, globose to obovoid, 1.2–2 × 1.1–1.5 mm, usually shorter than tepals. Seeds ellipsoid-ovoid, 0.5–0.8 mm. n = 18.


Phenology: Flowering spring–mid summer.
Habitat: Moist, bare flats, short turf, and mossy areas in meadows, stream banks, and seepage areas on outcrops (usually granite)
Elevation: 1200–3200 m

Discussion

Juncus capillaris occurs in California in the Sierra Nevada and in Oregon in the Steens Mountains.

Selected References

None.

Lower Taxa

None.
... more about "Juncus capillaris"
persistent +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
1.2mm;2mm +
globose +  and obovoid +
1.1mm;1.5mm +
Ralph E. Brooks* +  and Steven E. Clemants* +
F. J. Hermann +
channeled;terete;flat +
inconspicuous +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
membranous +
Hair-stemmed dwarf rush +
flattened +  and round +
Calif. +  and Oreg. +
1200–3200 m +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
arranged +  and cluster +
headlike +
Moist, bare flats, short turf, and mossy areas in meadows, stream banks, and seepage areas on outcrops (usually granite) +
pseudoaxillary +  and terminal +
usually slightly longer +
cauline +  and basal +
3 +  and 1 +
green;brown or purplish black +
persistent +
Flowering spring–mid summer. +
parietal +  and axile +
Leaflets of Western Botany +
ellipsoid-ovoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
green;brown or purplish black +
persistent +
2 +  and 3 +
generally longer +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (?) +  and 0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +
Juncus sect. Graminifolii +
Juncus capillaris +
Juncus subg. Graminifolii +
species +
chestnut-brown +  and black +
1.8mm;2.8mm +
0.8mm;1.5mm +
herb +  and cespitose +