Jepson eFlora: Taxon page
Vascular Plants of California
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Luzula orestera

Higher Taxonomy
Family: JuncaceaeView DescriptionDichotomous Key
Common Name: RUSH FAMILY
Habit: Annual, perennial herb generally from rhizomes. Stem: round or flat. Leaf: generally basal; sheath margins fused, or overlapping and generally with 2 ear-like extensions at blade junction; blade round, flat, or vestigial, glabrous or margin hairy. Inflorescence: head-like clusters or flowers 1, variously arranged; bracts subtending inflorescence 2, generally leaf-like; bracts subtending inflorescence branches 1--2, reduced; bractlets subtending flowers generally 1--2, generally translucent. Flower: generally bisexual, radial; sepals and petals similar, persistent, scale-like, green to brown or +- purple-black; stamens generally 3 or 6, anthers linear, persistent; pistil 1, ovary superior, chambers generally 1 or 3, placentas 1 and basal or 3 and axile or parietal, stigmas generally > style. Fruit: capsule, loculicidal. Seed: 3--many, generally with white appendages on 1 or both ends.
Genera In Family: 7 genera, 440 species: temperate, arctic, and tropical mountains. Note: Flowers late spring to early fall.
eFlora Treatment Author: Peter F. Zika, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: LuzulaView DescriptionDichotomous Key

Habit: Perennial herb, cespitose or rhizomatous, rhizome ascending or vertical. Stem: cylindric. Leaf: generally basal, cauline few; blades linear, flat or channeled, margins and sheath opening, sparsely to densely long-soft-hairy. Inflorescence: panicles of 1--few flowers per branch, or head-like and cylindric to ovoid in dense to loose clusters; lower bract leaf-like or herbaceous at base, membranous distally, bractlets 1--3, margins generally ciliate. Flower: perianth parts 6, pale brown to +- black-brown; stamens 6; pistil 1, chamber 1, placenta basal. Fruit: capsule, opening with 3 valves. Seed: 3, elliptic to ovoid, ridged on 1 side, occasionally attached to placenta by tuft of hairs, generally with +- white appendage at tip.
Species In Genus: +- 115 species: worldwide. Etymology: (Latin: light; Italian: glow worm) Note: Measure unridged side of seeds; seed length measurement not including appendage.
eFlora Treatment Author: Jan Kirschner
Luzula orestera Sharsm.
Habit: Plant densely cespitose, 7--14 cm. Stem: stout, erect. Leaf: flat, tip obtuse, thickened; basal leaves numerous, 3--5(8) cm, 3--4 mm wide; cauline 1--2, 3--4 cm, 3--4 mm wide. Inflorescence: +- 1--4(6) sessile clusters, generally (0.5)0.8--1.2 cm, heads densely congested, many-flowered; lower bracts 1--3, > inflorescence, leaf-like, +- stiff, +- red, erect-spreading. Flower: perianth parts +- 2.4--2.9 mm, +- equal, lanceolate, acuminate, dark brown, margins pale, distinct; anthers 0.4--0.6 mm, filaments 0.5--0.6 mm. Fruit: < perianth, +- obtuse, dark brown; valves 1.8--2 mm, +- 1.1 mm wide. Seed: 0.8--0.9(1) mm, 0.5--0.6 mm wide; appendage 0.15--0.2 mm. Chromosomes: 2n=20,22.
Ecology: Alpine and subalpine meadows, fell-fields; Elevation: 2700--3600 m. Bioregional Distribution: SNH. Flowering Time: Jul--Aug Note: Possibly in Nevada, Oregon.
Jepson eFlora Author: Jan Kirschner
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Next taxon: Luzula parviflora

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Botanical illustration including Luzula orestera

botanical illustration including Luzula orestera


Citation for this treatment: Jan Kirschner 2012, Luzula orestera, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on August 02, 2021.

Citation for the whole project: Jepson Flora Project (eds.) 2021, Jepson eFlora,, accessed on August 02, 2021.

Luzula orestera
click for enlargement
© 2004 Steve Matson
Luzula orestera
click for enlargement
© 2004 Steve Matson
Luzula orestera
click for enlargement
© 2004 Steve Matson
Luzula orestera
click for enlargement
© 2004 Steve Matson
Luzula orestera
click for enlargement
© 2004 Steve Matson
Luzula orestera
click for enlargement
© 2004 Steve Matson

More photos of Luzula orestera in CalPhotos

Geographic subdivisions for Luzula orestera:
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).


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Data provided by the participants of the  Consortium of California Herbaria.
View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).