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blood rush, dwarf rush, Herman's dwarf rush, Hermann's dwarf rush, juncus hemiendytus

rush family

Habit Herbs, annual, cespitose, 0.03–0.36 dm. Herbs, perennial, occasionally annual, usually rhizomatous, orsometimes cespitose.
Culms

to 5.

round or flat.

Leaves

to 1.8 cm, 1/2–1 1/3 height of plant.

mostly basal;

sheath margins fused or overlapping, often with 2 earlike extensions (auricles) at blade junction;

blade flat or round, glabrous or margins hairy.

Inflorescences

solitary flowers.

of headlike clusters or single flowers variously arranged;

bracts subtending inflorescence 1 or more2, mostly leaflike;

bracts subtending inflorescence branches 1–2, reduced;

bracteoles subtending solitary flower 0–2, translucent, reduced.

Flowers

2-merous;

: tepals 4(–6), erect to recurved at maturity, reddish, 1.5–3 × 0.5–1.2 mm;

outer and outer series nearly equal, apex rounded to acute;

stamens 2(–3), filaments 0.5–1.4 mm, anthers 0.3–0.7 mm;

style 0.1–0.4 mm, stigma 2(–3), 0.3–1 mm.

usually bisexual, radially symmetric;

sepals and petals similar, persistent, green to brown or purplish black;

stamens usually 3 or 6;

anthers persistent, linear;

pistils 1;

ovaries superior, locules 1 or 3, placentas 1 and basal or 3 and axile or parietal;

stigmas generally longer than styles.

Fruits

capsules, loculicidal.

Capsules

reddish, 2–- or 3-locular, obovoid to ellipsoid or oblate, 1.9–3.5 × 1–2 mm.

Seeds

ovoid to oblate, 0.3–0.55 mm.

3–many, often with white appendages on 1 or both ends.

Juncus hemiendytus

Juncaceae

Distribution
from USDA
[WildflowerSearch map]
[BONAP county map]
Arctic and temperate regions; tropical mountains
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Genera 9, species ca. 350 (2 genera, 1108 species in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Bracts proximal to inflorescence, 1–2
var. hemiendytus
1. Bracts proximal to inflorescence absent
var. abjectus
1. Leaves glabrous, sheaths open; fruits 1- or 3-chambered; seeds many
Juncus
1. Leaves generally with hairy margins; fruits 1-chambered; seeds 3
Luzula
Source FNA vol. 22, p. 232. FNA vol. 22, p. 211. Authors: Ralph E. Brooks, Steven E. Clemants.
Parent taxa 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. 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. hemiendytus var. abjectus, J. hemiendytus var. hemiendytus
Juncus, Luzula
Synonyms J. brachystylus, J. brachystylus var. uniflorus, J. triformis var. uniflorus
Name authority F. J. Hermann: Leaflets of Western Botany 5: 118. (1948) A. L. Jussieu
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