Flora of North America species comparison

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Juncus macrophyllus

Juncus falcatus

long-leaf rush, rush

falcate rush, sickle-leaf rush
Habit Herbs, perennial, tufted, 2–10 dm. Herbs, perennial, rhizomatous, 0.5–3 dm.
Rhizomes

poorly developed.

Culms

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

erect, slightly compressed.
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 2–4, cauline 1–3;

auricles absent or rudimentary;

blade flat, 4–15 cm × 1.5–3 mm.
Inflorescences

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

primary bract much shorter than inflorescence.

glomerules, (1–)2–5, each with 2–15 flowers, open or aggregate;

primary bract usually exceeding 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.

tepals brown, ovate-lanceolate, 4.5–6 mm, margins scarious, minutely papillate;

inner series slightly shorter.
Capsules

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

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

ovoid, 0.6 mm, not tailed.

ovoid to pyriform, 0.7 mm, not tailed.

Juncus macrophyllus

Juncus falcatus
Phenology Flowering and fruiting summer.
Habitat Wet banks and meadows in chaparral and low mountains
Elevation 700–2600 m (2300–8500 ft)
Distribution
from FNA
AZ; CA; NV
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; CA; OR; WA; BC; Pacific Islands
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Filaments much shorter than anthers
var. falcatus
1. Filaments ca. as long as anthers
var. sitchensis
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. 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. 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
Subordinate taxa
J. falcatus var. falcatus, J. falcatus var. sitchensis
Synonyms J. canaliculatus, J. longistylis var. scabratus
Name authority Coville: University of California Publications in Botany 1: 65. (1902) E. Meyer: Syn. Luzul. 34. (1823)
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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