Flora of North America species comparison

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Juncus macrophyllus

Juncus greenei

long-leaf rush, rush

Greene's rush, jonc de Greene
Habit Herbs, perennial, tufted, 2–10 dm. Herbs, perennial, tufted, to 7 dm.
Rhizomes

poorly developed.

short, densely branched.
Culms

erect, nearly terete to slightly compressed, never rooting at nodes.

1–30.
Cataphylls

1–2.
Leaves

basal several, cauline 1–3;

auricles rounded, 1–3 mm, apex acutish, membranous;

blade pale green, basal blade striate, channeled, basal 1/2–1 times length of culm;

cauline 8–15 cm × 1–3 mm.

basal, (1–)2–3;

auricles (0.2–)0.4–0.6 (–0.8) mm, scarious, rarely ± leathery;

;

blade dark green, nearly terete, 5–30 cm × 0.4–0.8 mm, margins entire.
Inflorescences

glomerules, 8–25, each with 3–5 flowers, open;

primary bract much shorter than inflorescence.

terminal, 5–50-flowered, usually congested, 1–8 cm;

primary bract usually surpassing inflorescence.
Flowers

tepals greenish with reddish or brown tinge, lanceolate, 5–6 mm, outer series shorter;

stamens 6, filaments 0.5–1 mm, anthers 1.8–2.6 mm;

style 0.5–1 mm.

bracteoles 2;

tepals dark green or darker, lanceolate, 2.5–4.2 mm;

outer and inner series nearly equal, apex acute;

stamens 6, filaments 0.5–0.8 mm, anthers 0.5–0.8 mm;

style 0.2 mm.
Capsules

tan, 3-locular, obovoid, 3–4.5 mm, shorter than perianth.

chestnut brown or dark brown, infrequently lighter, 3-locular, ellipsoid, (2.5–)2.9–3.5(–4) × (1.1–)1.5–1.8 mm, slightly exceeding tepals, apex somewhat truncate.
Seeds

ovoid, 0.6 mm, not tailed.

dark tan, ellipsoid to lunate, 0.48–0.65–(0.7) mm, not tailed.
2n

= ca. 80.

Juncus macrophyllus

Juncus greenei
Phenology Flowering and fruiting summer. Flowering and fruiting summer.
Habitat Wet banks and meadows in chaparral and low mountains Usually dry, well-drained, sandy soil in pine lands, near lake shores, or among sand dunes and often associated with disturbance
Elevation 700–2600 m (2300–8500 ft)
Distribution
from FNA
AZ; CA; NV
[WildflowerSearch map]
[BONAP county map]
from FNA
CT; IA; IL; IN; MA; ME; MI; MN; NH; NJ; NY; OH; PA; RI; VT; WI; NB; NS; ON; PE; QC
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 22. FNA vol. 22.
Parent taxa Juncaceae > Juncus > subg. Graminifolii Juncaceae > Juncus > subg. Poiophylli
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. 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. 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
Synonyms J. canaliculatus, J. longistylis var. scabratus
Name authority Coville: University of California Publications in Botany 1: 65. (1902) Oakes & Tuckerman: American Journal of Science, and Arts 45:37. (1843)
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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