Flora of North America species comparison

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Juncus textilis

Juncus

basket rush, mat or basket rush

jonc, rush
Habit Herbs, perennial, 10–20 dm. Herbs, perennial or rarely annual, rhizomatous or cespitose.
Rhizomes

long- creeping.

Culms

erect, 2–5 mm diam.

round or flattened in cross section.
Cataphylls

several.

often present at culm base.
Leaves

blade absent.

sheaths open;

blade flat, channeled, ensiform or terete, sometimes septate, margins involute.
Inflorescences

lateral, many flowered, loose;

primary bract barely exceeding to many times longer than inflorescence.

terminal or pseudoaxillary, monochasia or dichasia, usually with monochasial branches, cymes or 1–many heads in racemes or panicles;

bracteoles 2 or absent.
Flowers

variously pedicellate;

bracteoles membranous;

tepals greenish to pale brown, lanceolate, 3.5–5 mm;

inner series loosely subtending capsule at maturity, usually slightly shorter, margins scarious to clear, acutish;

stamens 6, filaments 0.3–0.9 mm, anthers 1–2.5 mm;

style 1–1.5 mm.

tepals (4–)6 in 2 whorls;

stamens (2–)3–6.
Capsules

dark brown, 3-locular, oblate to narrowly ovoid, 3–4 mm, nearly equal to perianth.

1-locular or 3-locular, septicidal.
Seeds

dark amber, oblate to ellipsoid, 0.5–0.8 mm.

many, ellipsoid to ovoid, sometimes tailed.

Juncus textilis

Juncus
Phenology Flowering and fruiting summer.
Habitat Moist or wet exposed areas
Elevation 100–1800 m (300–5900 ft)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from USDA
Worldwide except Antarctica
[BONAP county map]
Discussion

Species ca. 300 (95 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Flowers borne singly; bracteoles present (except J. pelocarpus, J. subtilis).
→ 2
1. Flowers in heads; bracteoles absent.
→ 4
2. Inflorescences appearing lateral, inflorescence bract terete, erect, appearing to be continuation of culm; basal leaves bladeless, cauline leaves absent
subg. Genuini
2. Inflorescences appearing terminal, inflorescence bract erect or ascending, flat, involute or terete; basal leaves (at least some) usually with blade, cauline leaves present or absent.
→ 3
3. Leaves terete, septate; capsules beaked
subg. Septati
3. Leaves flat, involute or terete, not septate; capsule rarely beaked
subg. Poiophylli
4. Leaves flat or ensiform.
→ 5
4. Leaves terete or compressed.
→ 6
5. Leaves ensiform, imperfectly septate
subg. Ensifolii
5. Leaves flat, not septate
subg. Graminifolii
6. Capsules large; seeds large, long tailed; leaves not noticeably septate
subg. Alpini
6. Capsules smaller; seeds not tailed or if tailed not long; leaves septate or not.
→ 7
7. Leaves not septate; plants halophytic
subg. Juncus
7. Leaves septate; plants usually of fresh water habitats
subg. Septati
Source FNA vol. 22. FNA vol. 22. Authors: Ralph E. Brooks*, Steven E. Clemants*.
Parent taxa Juncaceae > Juncus > subg. Genuini Juncaceae
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. 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. 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. tiehmii, J. torreyi, J. trifidus, J. triformis, J. triglumis, J. trigonocarpus, J. uncialis, J. validus, J. vaseyi, J. xiphioides
Subordinate taxa
J. subg. Alpini, J. subg. Ensifolii, J. subg. Genuini, J. subg. Graminifolii, J. subg. Juncus, J. subg. Poiophylli, J. subg. Septati
Synonyms J. lesueurii var. elatus
Name authority Buchenau: Abhandlungen herausgegeben vom naturwissenschaftlichen Vereine zu Bremen 17: 336. (1903) Linnaeus: Sp. Pl. 1: 325. 1753; Gen. Pl. ed. 5; 152, (1754)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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