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Details for: Luzula subsessilis |
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2 different source(s) use this name:
- Kirschner, J. et al. 2002, Species Plantarum: Flora of the World Part 6-8.
- USDA Plants Database, generated January 15, 1997
| Source: |
Kirschner, J. et al. 2002, Species Plantarum: Flora of the World Part 6-8. [IOPI preferred view]
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| Name: |
Luzula subsessilis (S.Watson) Buchenau |
| Nomencl. ref. |
Oesterr. Bot. Z. vol. 48, 290. 1898. |
| 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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| Basionym: |
Luzula comosa var. subsessilis S.Watson |
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Synonym(s):
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Juncoides subsessilis (S.Watson) Piper |
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Juncoides comosa var. macranthera (S.Watson) Parish |
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Juncoides comosa var. subsessilis (S.Watson) E.Sheld. |
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Luzula campestris var. macrantha (S.Watson) Fernald & Wiegand |
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Luzula comosa var. macrantha S.Watson |
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Luzula comosa var. subsessilis S.Watson |
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| Description: |
Perennials, c. 20–30 (–40) cm tall, caespitose; rhizome short; stolons ±absent. Basal leaves
c. 7–14 cm long, 3.0–4.5 mm wide. Cauline leaves 1–3, (3.5–) 5–9 (–11) cm long, to c. 4.5 mm wide; margins ciliate, papillose-serrulate; apex obtuse. Lower bract 1.5–7.0 cm long, usually shorter, rarely longer than inflorescence. Inflorescence composed of 1–2 subsessile and
(0–) 1–3 (–6) pedunculate, broadly ovoid to ±cylindric, (3–) 5–9 (–13)-flowered clusters
0.6–1.3 mm long, 0.7–1.0 mm wide; proximal flowers in a cluster, rarely remote; proximal peduncles sometimes remote. Peduncles straight to flexuose, c. 2.5–8.5 cm long, smooth or slightly papillose just below cluster. Bracteoles ovate, scarious to ±purplish, c. 2.0 mm long, ciliate. Tepals ±equal, glabrous, (3.1–) 3.4–4.0 (–5.0) mm long, lanceolate, acuminate to acute, blackish castaneous-brown or castaneous-brown; margins scarious, distinct, broad. Stamens 6; anthers (1.1–) 1.5–2.0 mm long, slightly to many times longer than 0.4–0.6 mm long filaments; style 0.6–1.2 mm long; stigmas 2.0–3.5 mm long. Capsule obovoid, pale brown, subobtuse, shorter than perianth; capsule segments c. 2.6–2.9 × 1.8–2.0 mm. Seeds ovoid-subglobular, 1.2–1.3 mm long, 0.9–1.1 mm wide; appendage 0.2–0.3 (rarely 0.5) mm long, fibrillate; apex umbonulate. 2n=12, fide H.Nordenskiöld, Hereditas 37: 336–337 (1951). |
| Geography: |
Pacific North America, from British Columbia to California. Usually in open drier woodlands, from near the sea level to c. 2600 m. Map 146., 71. BRITISH COLUMBIA: Vancouver Is, Parksville, H.Nordenskiöld 50-23 (UPS). 73. OREGON: Jackson Co., Jacksonville, 1 May 1954, A.N.Stewart 6663 & L.G.Gentner (S). WASHINGTON: Klickitat Co., Bingen, Apr 1907, W.Suksdorf s.n. (L); W Klickitat Co., Columbia R., W.Suksdorf 2100 (GH); Shelton, F.W.Gould 1137 (GH). 76. CALIFORNIA: Plumas Co., May 1877, R.M.Austin (para: GH); Monterey Co., Jamesburg, Tularcitos Ridge, M.A.Nobs 554 (UPS); Santa Clara Co., Stanford, H.Nordenskiöld 50-22 (UPS); Sonoma Co., Santa Rosa Ck, A.A.Heller & H.E.Brown 5156 (GH, P, S); Amador Co., Irishtown, G.Hansen 45 (K). |
| Notes: |
A very variable species. It is possible that some tetraploid plants from California belong to
L. subsessilis, too. The species comprises two morphological extremes linked by a majority of intermediates: large-flowered plants with clusters broadly ovoid, dense, and plants with medium-sized flowers in looser clusters. The two forms sometimes coexist at a locality. The type of L. subsessilis is closer to the large-flowered extreme. Some plants are difficult to distinguish from L. comosa var. laxa; the latter always has narrower seeds. |
| SourceHigherTaxon from IOPI: |
Juncaceae |
| Taxon number in Juncaceae SP treatment
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98. |
| TDWG Distribution Code: |
71: BRC. 73: ORE, WAS. 76: CAL. |
| Type: | T: California, 1866, H.N.Bolander s.n.; lecto: GH, designated here. |
| Distribution table: |
| Northern America |
Northwestern U.S.A. |
Oregon |
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Washington |
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Southwestern U.S.A. |
California |
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Western Canada |
British Columbia |
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| Source: |
USDA Plants Database, generated January 15, 1997
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| Name: |
Luzula subsessilis (S. Wats.) Buch. |
| Rank: |
Species |
| Status: |
SYNONYM |
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Synonym of:
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Luzula congesta (Thuill.) Lej. |
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| Geography: |
US(AK, CA, CO, ID, OR, WA) |
| Reference in Source: |
For reference information check with USDA NRCS Plants Database at http://plants.usda.gov/ |
| SourceStatusDesignation: |
S |
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© 1996-2007 The International Organization
for Plant Information.
This page last updated: Dienstag, 21. August 2007
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