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Details for: Luzula orestera |
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Search restricted to Kirschner, J. et al. 2002, Species Plantarum: Flora of the World Part 6-8. Check for other Sources using this name
| Source: |
Kirschner, J. et al. 2002, Species Plantarum: Flora of the World Part 6-8. [IOPI preferred view]
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| Name: |
Luzula orestera Sharsm. |
| Nomencl. ref. |
Aliso vol. 4(1), 125. 1958. |
| Rank: |
Species |
| Status: |
ACCEPTED |
| Taxonomy (this taxon is included in): |
Familia - Juncaceae
Genus - Luzula DC.
Subgenus - Luzula subgen. Luzula DC.
Sectio - Luzula sect. Luzula
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| Description: |
Perennials c. 7–14 cm tall, stout, densely caespitose; rhizome short; stolons absent. Basal leaves numerous, 3–5 (–8) cm long, 3–4 mm wide Cauline leaves 1–2, 3–4 cm long, to 3–4 mm wide; margins sparsely ciliate, densely papillose-serrulate; apex obtuse. Lower bracts
1–3, ±stiff, reddish, leaf-like, 1.0–1.8 (–3.0) cm long, erecto-patent, exceeding inflorescence. Inflorescence a densely congested head of c. 1–4 (–6) sessile indistinct clusters, many-flowered, usually (0.5–) 0.8–1.2 cm in diam. Bracteoles broadly ovate, whitish-scarious,
c. 1.5 mm long. Tepals ±equal, glabrous, lanceolate, acuminate, c. 2.4–2.9 mm long, dark castaneous-brown to blackish-brown; margins distinct, broad, pale brownish-membranous. Stamens 6; anthers 0.4–0.6 mm long; filaments 0.5–0.6 mm long; style 0.2–0.3 mm long; stigmas 0.7–1.0 mm long. Capsule ±ovoid, ±obtuse, shorter than perianth, dark castaneous-brown; capsule segments 1.8–2.0 × c. 1.1 mm; mucro c. 0.1 mm long. Seeds ovoid-ellipsoid, 0.8-0.9 (–1.0) mm long, 0.5–0.6 mm wide; appendage 0.15–0.20 mm long, fibrillate. 2n=20 [4AL+16BL], 22 [2AL+20BL], fide: H.Nordenskiöld, Hereditas 37: 336-337 (1951). |
| Geography: |
Endemic in Sierra Nevada, California. Alpine and subalpine meadows, fell-fields, 2700–3600 m. Map 145., 76. CALIFORNIA: Sierra Nevada, Tuolumne R near Unicorn Ck, c. 2700 m, C.W.Sharsmith 4991 (K); Tuolumne Co., Timberline, C.W.Sharsmith 5803 (UPS); Sierra Nevada, Humphreys Basin, W of Mt Humphreys, c. 3650 m, 10 Aug 1937, C.W.Sharsmith 3084 (K); Mono Co., E of Tioga Pass, Mt Dana,
c. 3100 m, 5 Aug 1943, C.W.Sharsmith 4557 (GH); Mono Co., Spuller Lake, 3350 m, D.D.Keck 06 (UPS); Mono Co., Hall Nat. Area, Slate Ck Basin, E of Mt Conness, 3200 m, G.W.Turesson & C.G.Alm 618 (UPS); Tulare Co., W side of Army Pass, c. 3600 m, J.T.Howell 26026 (UPS). |
| Note in illustration: |
Map: J.Coffey Swab, Fl. North Amer. 22: 261 (2000). |
| Notes: |
Similar to L. sudetica and L. groenlandica but differs in having longer tepals, usually shorter seeds and usually wider leaves. The diploid (agmatoploid) chromosome numbers indicate the distinctiveness of the species. |
| SourceHigherTaxon from IOPI: |
Juncaceae |
| Taxon number in Juncaceae SP treatment
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97. |
| TDWG Distribution Code: |
76: CAL. |
| Type: | T: California, Sierra Nevada, Tuolumne Co., Mt Coness region, Sheep Peak above lowest McCabe lake, C.W.Sharsmith 4085; holo: UC, n.v. |
| Distribution table: |
| Northern America |
Southwestern U.S.A. |
California |
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© 1996-2007 The International Organization
for Plant Information.
This page last updated: Dienstag, 21. August 2007
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