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Details for: Luzula acuminata |
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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 acuminata Raf. |
| Nomencl. ref. |
Raf., Autik. Bot. vol. 193. 1840. |
| Rank: |
Species |
| Status: |
ACCEPTED |
| Taxonomy (this taxon is included in): |
Familia - Juncaceae
Genus - Luzula DC.
Subgenus - Luzula subgen. Pterodes (Griseb.) Buchenau
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| Included taxa:
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Luzula acuminata Raf. subsp. acuminata |
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Luzula acuminata subsp. carolinae (S.Watson) Z.Kaplan |
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Synonym(s):
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Luzula pilosa var. americana Schult. & Schult.f. |
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| Description: |
Perennial, 6–47 cm tall, glabrous; stolons to 6 cm long. Stem with numerous basal and 2–4 cauline flat leaves; basal leaves 6–39 cm × 2–11 mm; cauline leaves 2.5–11.5 cm × 2–5 mm, sparsely pubescent to subglabrous at margins, without a mucronate projection on callose tip. Inflorescence terminal, simple to compound; secondary/primary pedicels ratio 0–1.3; primary pedicels 5–22, loosely ascending, spreading or nodding; flowers borne singly on primary or secondary pedicels. Basal bract to 3.5 cm long, shorter than inflorescence. Bracteoles 0.7–2.1 mm long. Tepals equal, 2.7–3.6 mm long, broadly lanceolate, acuminate, entire, pale brown to stramineous with hyaline margins. Stamens 6; anthers 0.8–1.5 mm long, longer than filaments; anther/filament ratio 1.3–3.5; style 0.7–1.5 mm long; stigmas 1.4–2.6 mm long, ±persistent. Capsule ovoid, acute, equalling to slightly exceeding tepals, light brown to stramineous. Seeds subglobose to ellipsoid, 1.1–1.5 × 1.0–1.2 mm, with apical appendages 0.4–1.7(–2.1) mm long; seed/appendage ratio 0.8–2.8. 2n=48 [CL], fide H.Nordenskiöld, Hereditas 37: 345 (1951). |
| Description Table: |
Inflorescence simple to poorly compound; secondary/primary
pedicels ratio 0–0.3; usually only one secondary pedicel on
any one primary pedicel
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111a. subsp. acuminata
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Inflorescence compound; secondary/primary pedicels
ratio 0.3–1.3; mostly two or more secondary pedicels on some
of the primary pedicels
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111b. subsp. carolinae
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| Geography: |
SE Canada, E U.S.A. The species is subdivided into two taxa characterized by inflorescence differences. Becauyse of the allopatric distribution in most of their ranges, the variants are treated at subspecies level. |
| Note in illustration: |
Maps: E.Hultén & M.Fries, Atlas N. Eur. Vasc. Pl. 1: map 163 (1986); J.Coffey Swab, Fl. North Amer. 22: 256 (2000). |
| SourceHigherTaxon from IOPI: |
Juncaceae |
| Taxon number in Juncaceae SP treatment
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111. |
| Type: | T: ‘Boreal America’, original material not extant, probably destroyed. Open woods and thickets, Orono, Maine, May 14, 1902, M.L.Fernald [Pl. Exs. Gray.] 85; neo: GH, fide J.Kirschner & Z.Kaplan, Taxon 50: 1111 (2000); isoneo: GH, K, PH, PRC, US, W. |
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© 1996-2007 The International Organization
for Plant Information.
This page last updated: Dienstag, 21. August 2007
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