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capitate rush, dwarf rush, leafy-bract dwarf rush

long-style rush

Habit Herbs, annual, cespitose, 0.3–1 dm. Herbs, perennial, 2–6 dm.
Rhizomes

long creeping.

Culms

to 20.

slightly compressed.

Leaves

basal;

auricles absent;

blade 0.5–2.5 cm × 0.5 mm.

basal 2–5, cauline 1–3;

auricles 1–2.5 mm, apex truncate to obtuse;

blade flat, 1–3 dm × 1.5–3 mm, the cauline shorter.

Inflorescences

glomerules 1–2, each with 2–10(–14) flowers;

bracts subtending inflorescence 1(–2), foliose, clearly surpassing inflorescence.

glomerules 1–4(–8), each with 3–12 flowers, open or aggregate, 2–6(–10) cm;

primary bract shorter than inflorescence.

Flowers

tepals 6, tan to brownish, subulate, lanceolate-ovate, 3.5–4.5(–5) mm, 2 times length of inner tepals, margins scarious;

inner series delicate, shorter, apex acute;

stamens 3, filaments 1 mm, anthers 0.5 mm;

style 0.4–0.7 mm.

tepals brown with green midstripe, lanceolate, 5–6 mm, margins scarious, sometimes papillose;

outer series slightly shorter;

stamens 6, filaments 0.5–1 mm, anthers 1.2–2 mm;

style 0.6 mm.

Capsules

tan to reddish brown, 3-locular, globose to obovoid, 1.2–1.7 mm, shorter than tepals.

tan, 3-locular, obovoid, 3–5 mm, shorter than perianth.

Seeds

ellipsoid-ovoid, 0.3–0.4 mm.

ovoid, 0.4–0.6 mm, not tailed.

2n

= 18.

= 40.

Juncus capitatus

Juncus longistylis

Phenology Flowering and fruiting spring. Flowering and fruiting summer.
Habitat Moist to wet areas, usually in sandy, often disturbed soil such as roadsides or along trails Moist ground in mountain meadows
Elevation below 1000 m (below 3300 ft) 1000–3300 m (3300–10800 ft)
Distribution
from FNA
CA; LA; OK; TX; native; Africa (north); Europe; Asia (Near East) [Introduced in North America]
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; CO; ID; MI; MN; MT; ND; NE; NM; NV; OR; SD; UT; WA; WY; AB; BC; MB; NF; ON; QC; SK
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 22. FNA vol. 22.
Parent taxa Juncaceae > Juncus > subg. Graminifolii Juncaceae > Juncus > subg. Graminifolii
Sibling taxa
J. acuminatus, J. acutiflorus, J. acutus, J. alpinoarticulatus, J. anthelatus, J. arcticus, J. articulatus, J. biglumis, J. bolanderi, J. brachycarpus, J. brachycephalus, J. brachyphyllus, J. brevicaudatus, J. bryoides, J. bufonius, J. bulbosus, J. caesariensis, J. canadensis, J. capillaris, J. castaneus, J. chlorocephalus, J. compressus, J. confusus, J. cooperi, J. coriaceus, J. covillei, J. debilis, J. dichotomus, J. diffusissimus, J. drummondii, J. dubius, J. dudleyi, J. effusus, J. elliottii, J. ensifolius, J. falcatus, J. filiformis, J. filipendulus, J. georgianus, J. gerardii, J. greenei, J. gymnocarpus, J. hallii, J. hemiendytus, J. howellii, J. inflexus, J. interior, J. kelloggii, J. leiospermus, J. lesueurii, J. longistylis, J. luciensis, J. macrandrus, J. macrophyllus, J. marginatus, J. maritimus, J. megacephalus, J. mertensianus, J. militaris, J. nevadensis, J. nodatus, J. nodosus, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. pervetus, J. phaeocephalus, J. polycephalus, J. regelii, J. repens, J. roemerianus, J. scirpoides, J. secundus, J. squarrosus, J. stygius, J. subcaudatus, J. subtilis, J. supiniformis, J. tenuis, J. texanus, J. textilis, J. tiehmii, J. torreyi, J. trifidus, J. triformis, J. triglumis, J. trigonocarpus, J. uncialis, J. validus, J. vaseyi, J. xiphioides
J. acuminatus, J. acutiflorus, J. acutus, J. alpinoarticulatus, J. anthelatus, J. arcticus, J. articulatus, J. biglumis, J. bolanderi, J. brachycarpus, J. brachycephalus, J. brachyphyllus, J. brevicaudatus, J. bryoides, J. bufonius, J. bulbosus, J. caesariensis, J. canadensis, J. capillaris, J. capitatus, J. castaneus, J. chlorocephalus, J. compressus, J. confusus, J. cooperi, J. coriaceus, J. covillei, J. debilis, J. dichotomus, J. diffusissimus, J. drummondii, J. dubius, J. dudleyi, J. effusus, J. elliottii, J. ensifolius, J. falcatus, J. filiformis, J. filipendulus, J. georgianus, J. gerardii, J. greenei, J. gymnocarpus, J. hallii, J. hemiendytus, J. howellii, J. inflexus, J. interior, J. kelloggii, J. leiospermus, J. lesueurii, J. luciensis, J. macrandrus, J. macrophyllus, J. marginatus, J. maritimus, J. megacephalus, J. mertensianus, J. militaris, J. nevadensis, J. nodatus, J. nodosus, J. occidentalis, J. orthophyllus, J. oxymeris, J. parryi, J. patens, J. pelocarpus, J. pervetus, J. phaeocephalus, J. polycephalus, J. regelii, J. repens, J. roemerianus, J. scirpoides, J. secundus, J. squarrosus, J. stygius, J. subcaudatus, J. subtilis, J. supiniformis, J. tenuis, J. texanus, J. textilis, J. tiehmii, J. torreyi, J. trifidus, J. triformis, J. triglumis, J. trigonocarpus, J. uncialis, J. validus, J. vaseyi, J. xiphioides
Name authority Weigel: Observ. Bot. 28. (1772) Torrey: in W. H. Emory, Report on the United States and Mexican Boundary Survey, ... 2(1): 223. (1859)
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