Juncus triformis

Engelmann

2:492. 1868.

Common names: Long-styled dwarf rush
IllustratedEndemicConservation concern
Synonyms: Juncus megaspermus F. J. Hermann Juncus triformis var. stylosus Engelmann
Treatment appears in FNA Volume 22.

Herbs, annual, cespitose, 0.5–1.5 dm. Culms 2–80, capillary, 0.1–4 mm diam. Leaves 1/5–1/3 height of plant. Inflorescences headlike clusters, each with 1–7 flowers, bracts subtending inflorescence 2–10, ovate to broadly lanceolate, inconspicuous, 0.7–2.4 mm, membranous, apex acute. Flowers: tepals reddish with green central band, linear to lanceolate, 1.9–4.5 × 0.5–1.1 mm; inner series slightly longer than outer, apex acuminate to attenuate; stamens 3, filaments 0.4–1.1 mm, anthers 1–2.2 mm; style persistent, 1–3.2 mm, stigma 0.5–2.5 mm. Capsules reddish, 3-locular, ovoid to ellipsoid or oblate, 1.6–2.5 × 1.1–1.8 mm, usually 1/2 length of tepals. Seeds nearly globose to ellipsoid, 0.3–0.7 mm. n = 18.


Phenology: Flowering and fruiting spring–mid summer.
Habitat: Shallow soil of seepage areas on granite outcrops, such as along stream banks, ditches, around springs
Elevation: 0–2500 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Juncus triformis"
Ralph E. Brooks* +  and Steven E. Clemants* +
Engelmann +
Long-styled dwarf rush +
0–2500 m +
Shallow soil of seepage areas on granite outcrops, such as along stream banks, ditches, around springs +
Flowering and fruiting spring–mid summer. +
Abhandlungen herausgegeben vom naturwissenschaftlichen Vereine zu Bremen +
Illustrated +, Endemic +  and Conservation concern +
Juncus megaspermus +  and Juncus triformis var. stylosus +
Juncus triformis +
Juncus subg. Graminifolii +
species +