font settings and languages

Font Size: Large | Normal | Small
Font Face: Verdana | Geneva | Georgia
Languages:

Lolium temulentum

(Darnel Lolium Temulentum)

Interesting Facts

[ Back to top ]

Common Names

[ Back to top ]

Click on the language to view common names.

Common Names in English:

Bearded Darnel, Bearded Ryegrass, Darnel, Darnel Lolium Temulentum, Darnel Ryegrass, Poison Darnel

Common Names in French:

Ivraie énivrante

Common Names in German:

Taumellolch

Description

[ Back to top ]

Family Poaceae

Annual or perennial herbs, or tall woody bamboos . Flowering stems (culms ) jointed , internodes hollow or solid; branches arising singly from nodes and subtended by a leaf sheath and 2-keeled prophyll, often fascicled in bamboos. Leaves arranged alternately in 2 ranks , differentiated into sheath, blade , and an adaxial erect appendage at sheath/blade junction (ligule) ; leaf sheath surrounding and supporting culm-internode, split to base or infrequently tubular with partially or completely fused margins , modified with reduced blade in bamboos (culm sheaths) ; leaf blades divergent, usually long, narrow and flat, but varying from inrolled and filiform to ovate , veins parallel, sometimes with cross-connecting veinlets (especially in bamboos) ; ligule membranous or a line of hairs . Inflorescence terminal or axillary , an open, contracted , or spikelike panicle, or composed of lax to spikelike racemes arranged along an elongate central axis, or digitate, paired , or occasionally solitary; axillary inflorescences often many, subtended by spatheoles (specialized bladeless leaf sheaths) and gathered into a leafy compound panicle; spikelets often aggregated into complex clusters in bamboos. Spikelets composed of distichous bracts arranged along a slender axis (rachilla) ; typically 2 lowest bracts (glumes ) empty, subtending 1 to many florets ; glumes often poorly differentiated from accompanying bracts in bamboos. Florets composed of 2 opposing bracts enclosing a single small flower, outer bract (lemma) clasping the more delicate, usually 2-keeled inner bract (palea) ; base of floret often with thickened prolongation articulated with rachilla (callus) ; lemma often with apical or dorsal bristle (awn ), glumes also sometimes awned . Flowers bisexual or unisexual ; lodicules (small scales representing perianth) 2, rarely 3 or absent, 3 to many in bamboos, hyaline or fleshy ; stamens 3 rarely 1, 2, 6, or more in some bamboos, hypogynous, filaments capillary , anthers versatile; ovary 1-celled, styles (1 or) 2(rarely 3), free or united at base, topped by feathery stigmas, exserted from sides or apex of floret. Fruit normally a dry indehiscent caryopsis with thin pericarp firmly adherent to seed, pericarp rarely free, fleshy in some bamboos; embryo small or large; hilum punctate to linear .

About 700 genera and 11,000 species: widely distributed in all regions of the world.[1]

Physical Description

Species Lolium temulentum

Annual . Culms tufted , erect or decumbent , slender to moderately robust , 20-120 cm tall, 3-5-noded. Leaf blades flat, thin, 10-25 cm × 4-10 mm, smooth or scabridulous on abaxial surface, margins scabrid , young blades rolled; auricles present or absent; ligule 0.5-2.5 mm, obtuse to truncate . Raceme stiff, straight, 10-30 cm; rachis thick, smooth or scabridulous, spikelets about their own length apart. Spikelets turgid , 0.8-2.5 cm, florets 4-10, rachilla internodes 1-1.5 mm, smooth, glabrous ; glume linear-oblong, rigid , as long as spikelet, often exceeding florets, 5-9-veined, margins narrowly membranous, apex obtuse; lemmas elliptic to ovate , turgid at maturity, 5.2-8.5 mm, apex obtuse; awn usually present, stiff, scabrid; palea ciliolate along keels. Caryopsis very plump, length 2-3 times width , 4-7 mm. Fl. and fr. May-Aug. 2n = 14. [source]

Awnless or weakly awned variants can be distinguished at varietal rank. [source]

Habit: Graminoid

Habitat

Fields of cereals, introduced .[2].

Typically found at an altitude of 0 to 4,653 meters (0 to 15,266 feet).[3]

Biology

[ Back to top ]

Reproduction

Duration: Annual

Taxonomy

[ Back to top ]

Unambiguous Synonyms

  1. Bromus temulentus (L.) Bernh.
  2. Craepalia temulenta (L.) Schrank
  3. Lolium arvense With.
  4. Lolium temulentum var. arvense (With.) Lilja
  5. Lolium temulentum var. leptochaeton A. Braun
  6. Lolium temulentum var. macrochaeton A. Braun

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Place of publication : Sp. pl. 1:83. 1753

Name verified on 08-May-1992 by ARS Systematic Botanists. Last updated: 20-Nov-2007

Similar Species

[ Back to top ]

Members of the genus Lolium

ZipcodeZoo has pages for 132 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:

L. aechicum · L. aegyptiacum · L. agreste · L. album · L. ambiguum · L. annuum · L. appenninum · L. arenarium · L. aristatum · L. arundinaceum (Lolium Arundinaceum) · L. arvense · L. aschersoniana · L. asperum · L. berteronianum · L. boucheanum · L. brasilianum · L. bromoides · L. canadense · L. canariense (Canary Islands Ryegrass) · L. cechicum · L. coelorachis · L. complanatum · L. compositum · L. compressum · L. crassiculme · L. cristatum · L. cuneatum · L. cylindricum · L. decipiens · L. distachyum · L. dorei · L. edwardii · L. elegans · L. elongatum · L. felix · L. festuca · L. festucaceum · L. festucoides · L. flagellare · L. gaudini · L. giganteum (Giant Fescue) · L. glumosum · L. gmelini · L. gracile · L. grandispicum · L. gussonei · L. halleri · L. hubbardii · L. humile · L. husnoti · L. hybrid · L. hybridum (Short-Rotation Ryegrass) · L. 'Hymer' · L. infelix · L. italicum · L. italicum var. muticum · L. jechelianum · L. latum · L. lepturoide · L. lepturoides · L. lesdaini · L. linicola · L. linicolum · L. loliaceum · L. longiglume · L. lowei · L. lucidum · L. macilentum · L. marschallii · L. maximum · L. mazzettianum · L. multiflorum · L. multiflorum italicum · L. multiflorus · L. oechicum · L. osiridis · L. parabolicae · L. parenne · L. perene · L. perenne (Perennial Rye Grass) · L. perennem · L. perenne aristatum · L. perenne cristatum · L. perenne 'Literra' · L. perenne multiflorum (Perennial Rye Grass) · L. perenne rigidum · L. perenne perenne · L. perenne var. brasilianum · L. perenne var. italicum · L. perenne var. perenne · L. perenne x · L. persicum (Persian Rye Grass) · L. phoenice · L. phoenix · L. pratense (Meadow Ryegrass) · L. pratensis · L. remotum · L. remotum schrank · L. repens · L. rigidium

More Info

[ Back to top ]

Further Reading

[ Back to top ]

Notes

[ Back to top ]

Contributors

Data Sources

Accessed through GBIF Data Portal November 15, 2007:

Identifiers

Footnotes

  1. Shou-liang Chen, De-Zhu Li, Guanghua Zhu, Zhenlan Wu, Sheng-lian Lu, Liang Liu, Zheng-ping Wang, Bi-xing Sun, Zheng-de Zhu, Nianhe Xia, Liang-zhi Jia, Zhenhua Guo, Wenli Chen, Xiang Chen, Yang Guangyao, Sylvia M. Phillips, Chris Stapleton, Robert J. Soreng, Susan G. Aiken, Nikolai N. Tzvelev, Paul M. Peterson, Stephen A. Renvoize, Marina V. Olonova & Klaus Ammann "Poaceae". in Flora of China Vol. 22. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. "Lolium temulentum". in Flora of China Vol. 22 Page 243. Missouri Botanical Garden Press. Online at EFloras.org. [back]
  3. Mean = 177.910 meters (583.694 feet), Standard Deviation = 298.050 based on 2,262 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/1/2009