OregonFlora: Juncus planifolius vs. Juncus kelloggii

	Juncus planifolius	Juncus kelloggii
	flat-leaved rush, New Zealand rush	Kellogg's rush
Habit	Plants perennial, rarely annual, 1–50 cm tall, cespitose, branching, base without tubers.	Plants annual, 1–5.5 cm tall, unbranched.
Leaves	flat; grass-like; auricles absent.	capillary; basal.
Inflorescences	1–35 clusters; clusters 3–10-flowered, sometimes bearing leafy bulblets; inflorescence bracts inconspicuous, membranous; shorter than or equaling inflorescence.	1 terminal cluster, with 1–4 flowers per cluster; inflorescence bracts inconspicuous; flowers subtended by 2 bractlets; bractlet tips usually acute (acuminate).
Flowers	tepals 6, 1.8– 3.2 mm, dark brown to black; smooth; stamens 3; filaments 0.8–1.1 mm; anthers 0.4–0.6 mm, yellow; style 0.2–0.3 mm.	tepals (4)6; midveins dark reddish; tips acute to acuminate; stamens (2)3; filaments 0.7–1.3 mm; anthers 0.3–0.5 mm; styles 0.2–0.5 mm.
Capsules	elliptic to ovoid; shorter than or equaling the tepals, brown to dark brown, 1-chambered.	equaling or slightly longer than the tepals, dark red; apex acute to acuminate.
Seeds	0.3–0.45 × 0.2– 0.3 mm, reticulate, apiculate.	approximately 50 per capsule, 0.35–0.55 × 0.25– 0.35 mm, longitudinally striate (obvious at 30×), apiculate.
2n		=34.

	Juncus planifolius	Juncus kelloggii
Distribution	[BONAP county map]	[WildflowerSearch map] [BONAP county map]
Discussion	Muddy or sandy shores, sometimes in shallow water, ditches, cranberry farms, peatlands, damp dune hollows. 0–50 m. Est. CA; HI, South America; Australia, Ireland, New Zealand. Exotic. Juncus planifolius was first collected in Oregon in 1988 and is rapidly spreading. It is native south of the equator.	Creek banks, floodplains in wet prairie, swales, pool margins. 100–1900m. BR, Sisk, WV. CA, NV, WA; north to southern British Columbia. Native.
Source	Flora of Oregon, volume 1, page 283 Peter Zika	Flora of Oregon, volume 1, page 279 Peter Zika
Sibling taxa	J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brevicaudatus, J. breweri, J. bryoides, J. bufonius, J. bulbosus, J. canadensis, J. capillaris, J. capitatus, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. ensifolius x Juncus nevadensis, J. exiguus, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. kelloggii, J. laccatus, J. lescurii, J. longistylis, J. marginatus, J. mertensianus, J. mexicanus, J. nevadensis, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. ranarius, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis	J. acuminatus, J. anthelatus, J. articulatus, J. balticus, J. bolanderi, J. brevicaudatus, J. breweri, J. bryoides, J. bufonius, J. bulbosus, J. canadensis, J. capillaris, J. capitatus, J. compressus, J. confusus, J. conglomeratus, J. covillei, J. diffusissimus, J. drummondii, J. dudleyi, J. effusus, J. ensifolius, J. ensifolius x Juncus nevadensis, J. exiguus, J. falcatus, J. filiformis, J. gerardi, J. hemiendytus, J. hesperius, J. howellii, J. inflexus, J. interior, J. laccatus, J. lescurii, J. longistylis, J. marginatus, J. mertensianus, J. mexicanus, J. nevadensis, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. planifolius, J. ranarius, J. regelii, J. saximontanus, J. supiniformis, J. tenuis, J. tiehmii, J. torreyi, J. triglumis, J. trilocularis, J. uncialis
Synonyms		Juncus brachystylus
Web links	Local floras: CA, OR Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Juncus planifolius

Juncus kelloggii

flat-leaved rush, New Zealand rush

Kellogg's rush

Habit

Plants perennial, rarely annual, 1–50 cm tall, cespitose, branching, base without tubers.

Plants annual, 1–5.5 cm tall, unbranched.

Leaves

flat; grass-like;

auricles absent.

capillary;

basal.

Inflorescences

1–35 clusters; clusters 3–10-flowered, sometimes bearing leafy bulblets;

inflorescence bracts inconspicuous, membranous; shorter than or equaling inflorescence.

1 terminal cluster, with 1–4 flowers per cluster;

inflorescence bracts inconspicuous;

flowers subtended by 2 bractlets;

bractlet tips usually acute (acuminate).

Flowers

tepals 6, 1.8– 3.2 mm, dark brown to black; smooth;

stamens 3;

filaments 0.8–1.1 mm;

anthers 0.4–0.6 mm, yellow;

style 0.2–0.3 mm.

tepals (4)6;

midveins dark reddish;

tips acute to acuminate;

stamens (2)3;

filaments 0.7–1.3 mm;

anthers 0.3–0.5 mm;

styles 0.2–0.5 mm.

Capsules

elliptic to ovoid; shorter than or equaling the tepals, brown to dark brown, 1-chambered.

equaling or slightly longer than the tepals, dark red;

apex acute to acuminate.

Seeds

0.3–0.45 × 0.2– 0.3 mm, reticulate, apiculate.

approximately 50 per capsule, 0.35–0.55 × 0.25– 0.35 mm, longitudinally striate (obvious at 30×), apiculate.

=34.

Juncus planifolius

Juncus kelloggii

Distribution

[BONAP county map]

[WildflowerSearch map]

[BONAP county map]

Discussion

Muddy or sandy shores, sometimes in shallow water, ditches, cranberry farms, peatlands, damp dune hollows. 0–50 m. Est. CA; HI, South America; Australia, Ireland, New Zealand. Exotic.

Juncus planifolius was first collected in Oregon in 1988 and is rapidly spreading. It is native south of the equator.

Creek banks, floodplains in wet prairie, swales, pool margins. 100–1900m. BR, Sisk, WV. CA, NV, WA; north to southern British Columbia. Native.

Source

Flora of Oregon, volume 1, page 283
Peter Zika

Flora of Oregon, volume 1, page 279
Peter Zika

Sibling taxa