Juncus caesariensis

Coville

Memoirs of the Torrey Botanical Club 5: 106. 1894.

IllustratedEndemic
Basionym: Juncus asper Engelmann Trans. Acad. Sci. St. Louis 2: 478. 1868,
Treatment appears in FNA Volume 22.

Herbs, perennial, cespitose, 3–9 dm. Culms erect, 2–4 mm diam., scabrous. Cataphylls 0 or 1–2, straw-colored, apex acuminate. Leaves: basal 1–2, cauline 1–2; auricles 1–7.5 mm, apex rounded, scarious; blade terete, 4–25 cm × 1–1.8 mm, scabrous. Inflorescences panicles of 5–30 heads, 12–15 cm, erect to ascending branches; primary bract erect; heads 2–6-flowered, broadly obovoid, 5–10 mm diam. Flowers: tepals green to reddish-brown, lanceolate; outer tepals 3.3–3.9 mm, apex acuminate; inner tepals 3.9–4.7 mm, acuminate; stamens 6, anthers 1/2 filament length. Capsules exserted, chestnut-brown, 3-locular, ovoid, 4.5–5.3 mm, apex acuminate, valves separating at dehiscence. Seeds fusiform, 2.2–2.6 mm, tailed.; seed body covered with whitish translucent veil.


Phenology: Fruiting mid summer–early fall.
Habitat: Wet springy bogs, swamps, and borders of wet woods
Elevation: 0–100 m

Distribution

V22 482-distribution-map.jpg

N.S., Del., D.C., Md., N.J., N.C., Pa., Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Juncus caesariensis"
persistent +
acuminate +  and rounded +
scarious +
0.1 cm1 mm <br />0.001 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
Ralph E. Brooks* +  and Steven E. Clemants* +
Coville +
Juncus asper +
4 cm40 mm <br />0.04 m <br /> (25 cm250 mm <br />0.25 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
ascending +  and erect +
terete +, involute +  and flat +
chestnut-brown +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.53 cm5.3 mm <br />0.0053 m <br />) +
straw-colored +
N.S. +, Del. +, D.C. +, Md. +, N.J. +, N.C. +, Pa. +  and Va. +
0–100 m +
arranged +  and cluster +
headlike +
Wet springy bogs, swamps, and borders of wet woods +
2-6-flowered +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
obovoid +
pseudoaxillary +  and terminal +
erect +  and ascending +
12 cm120 mm <br />0.12 m <br /> (15 cm150 mm <br />0.15 m <br />) +
0.39 cm3.9 mm <br />0.0039 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
cauline +  and basal +
3 +  and 1 +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
green;brown or purplish black +
persistent +
Fruiting mid summer–early fall. +
parietal +  and axile +
Memoirs of the Torrey Botanical Club +
tailed;fusiform +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
green;brown or purplish black +
persistent +
Illustrated +  and Endemic +
generally longer +
Juncus sect. Septati +
Juncus caesariensis +
Juncus subg. Septati +
species +
green +  and reddish-brown +
lanceolate +
whitish translucent +
herb +  and cespitose +