Family: Grasses [Poaceae] |
Achnatherum |
Aegilops |
Agropyron |
Agrostis |
Aira |
Alopecurus |
Ammophila |
Anemanthele |
Anisantha |
Anthoxanthum |
Apera |
Arrhenatherum |
Avena |
Avenula |
Beckmannia |
Brachiaria |
Brachypodium |
Briza |
Bromopsis |
Bromus |
Calamagrostis |
Catabrosa |
Catapodium |
Cenchrus |
Ceratochloa |
Chasmanthium |
Chimonobambusa |
Chloris |
Cortaderia |
Corynephorus |
Crithopsis |
Cynodon |
Cynosurus |
Dactylis |
Dactyloctenium |
Danthonia |
Deschampsia |
Digitaria |
Echinochloa Echinochloa |
Ehrharta |
Eleusine |
Elymus |
Elytrigia |
Enneapogon |
Eragrostis |
Eremopyrum |
Eriochloa |
Fargesia |
Festuca |
Gastridium |
Gaudinia |
Glyceria |
Hainardia |
Hierochloe |
Holcus |
Hordelymus |
Hordeum |
Koeleria |
Lagurus |
Lamarckia |
Leersia |
Leptochloa |
Leymus |
Lolium |
Melica |
Mibora |
Milium |
Miscanthus |
Molinia |
Nassella |
Nardus |
Oryzopsis |
Panicum |
Parapholis |
Paspalum |
Pennisetum |
Phalaris |
Phleum |
Phragmites |
Phyllostachys |
Piptochaetium |
Pleioblastus |
Poa |
Polypogon |
Pseudosasa |
Psilurus |
Puccinellia |
Rostraria |
Rytidosperma |
Sasa |
Sasaella |
Schedonorus |
Schismus |
Secale |
Semiarundinaria |
Sesleria |
Setaria |
Snowdenia |
Sorghum |
Spartina |
Sporobolus |
Stipa |
Taeniatherum |
Tragus |
Triplachne |
Trisetum |
Triticum |
Urochloa |
Vulpia |
Yushania |
Zea |
Zizania |
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[ALOPECURUS] Foxtails
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Orange Foxtail (Alopecurus aequalis) | Photo: © Dawn Nelson |
Black Grass (Alopecurus myosuroides) | Photo: © Simon Melville |
Marsh Foxtail (Alopecurus geniculatus) | Photo: © RWD |
Meadow Foxtail (Alopecurus pratensis) | Photo: © RWD |
[AMMOPHILA] Grasses
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Marram (Ammophila arenaria) | Photo: © RWD |
[ANTHOXANTHUM] Vernal-Grasses
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Sweet Vernal-Grass (Anthoxanthum odoratum) | Photo: © Paula O'Meara |
[CYNOSURUS] Dog's-Tails
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Crested Dogstail (Cynosurus cristatus) | Photo: © RWD |
[DACTYLIS] Colt's-Foot
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Cock's-Foot (Dactylis glomerata) | Photo: © RWD |
[DANTHONIA] Heath-Grass
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Heath Grass (Danthonia decumbens) | Photo: © Dawn Nelson |
[DESCHAMPSIA] Hair-Grasses
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Wavy Hair-Grass (Deschampsia flexuosa) | Photo: © RWD |
[ECHINOCHLOA] Echinochloa
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Cockspur (Echinochloa crus-galli) | Photo: © Bastiaan Brak |
[ELYTRIGIA] Couch-Grasses
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[Elytrigia] COUCH GRASS HYBRID CHART |
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Elytrigia SPECIES LACKING HYBRIDS | ||
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Sand Couch (Elytrigia juncea) | Photo: © RWD |
[MOLINIA] Purple Moor-Grass
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Purple Moor-Grass (Molinia caerula) | Photo: © RWD |
[SPARTINA] Cord-Grasses
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Common Cord-Grass (Spartina anglica) | Photo: © RWD |
[ZEA] Maize
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Maize (Zea mays) | Photo: © RWD |
[AGROSTIS] Bent
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[Agrostis] BENT HYBRID CHART |
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Creeping Bent (Agrostis stolonifera) [Held aloft] | Photo: © RWD |
[SCHEDONORUS] Fescues
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[Schedonorus] TALL FESCUE HYBRID CHART |
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There are no species lacking hybrids, all three species hybridize with each other. |
[SCHEDONORUS] Tall Fescue
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[BROMUS] Brome
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[Bromus] BROME HYBRID CHART |
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Bromus SPECIES LACKING HYBRIDS | ||||||||||||||||||||||||||||||
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Soft Brome (Bromus hordeaceus) | Photo: © RWD |
Smooth Brome (Bromus racemosus) | Photo: © RWD |
[BROMOPSIS] Hairy-Bromes
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Hairy Brome (Bromopsis ramosa) | Photo: © RWD |
[ANISANTHA] Barren-Bromes
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Barren Brome (Anisantha sterilis) | Photo: © RWD |
[CERATOCHLOA] American Bromes
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[ALOPECURUS] Foxtails
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[Alopecurus] FOXTAIL HYBRID CHART |
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Alopecurus SPECIES LACKING HYBRIDS | ||||||
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[POA] Meadow-grasses
Dandelions [as well as Brambles (Rubus), Hawkweeds (Hieracium), Hawthorns (Cratageous), Rowans & Whitebeams (Sorbus), Meadow-grasses (Poa) and |
[Poa] MEADOWGRASS HYBRID CHART |
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Poa SPECIES LACKING HYBRIDS | ||||||||||||||||||||||||||
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[GLYCERIA] Sweet-grasses
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[Glyceria] SWEET-GRASS HYBRID CHART |
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Glyceria SPECIES LACKING HYBRIDS | ||
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Reed Sweet-Grass (Glyceria maxima) | Photo: © RWD |
[PUCCINELLIA] Saltmarsh-grasses
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[Puccinellia] SALTMARSH-GRASS HYBRID CHART |
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Puccinellia SPECIES LACKING HYBRIDS | ||||
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Borrer's Saltmarsh-Grass (Puccinellia fasciculata) | Photo: © Paula O'Meara |
Common Saltmarsh-Grass (Puccinellia maritima) | Photo: © RWD |
[LOLIUM] Ryegrasses
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[Lolium] RYEGRASS HYBRID CHART |
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In addition to the above hybrids, there are two inter-Genus hybrids with the Festuca Genus, or Perennial Tufted Grasses (which are closely related to the Ryegrasses). The two hybrids are: Festuca rubra × Lolium perenne (X Festulolium frederici) Festuca arundinacea × Lolium multiflorum But only the second still has any native occurrence in the UK, the first not having been seen since the 1960's (and then only in Cornwall). |
Lolium SPECIES LACKING HYBRIDS | ||||
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[SESLERIA] Blue Moor-Grass
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Blue Moor-Grass (Sesleria caerulea) | Photo: © RWD |
[LAGURUS] Hair's-Tail
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Hare's-Tail Grass (Lagurus ovatus) | Photo: © RWD |
[POLYPOGON] Beard-Grasses
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Annual Beard-Grass (Polypogon monspeliensis) | Photo: © Bastiaan Brak |
Water Bent (Polypogon viridis) | Photo: (CC by 2.0) Geoff Toone |
[FESTUCA] Fescues
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[Festuca] FESCUE HYBRID CHART |
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The genus Fescue also has forms two inter-genus hybrids with the Vulpia genus which are not listed here: Festuca rubra × Vulpia bromoides and Festuca rubra × Vulpia myuros. Vulpia is sometimes considered a subset of Festuca as a result.
Moreover, Festuca forms one cross-genus hybrid with Lolium (Ryegrasses), the result of which is called X Festulolium frederici (Festuca rubra × Lolium perenne). Oh what a tangled life taxonomists inhabit. |
Festuca SPECIES LACKING HYBRIDS | ||||||||||||||||||||||||||||||||||||||||||
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[HORDEUM] Grasses
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Two-Row Barley (Hordeum distichon) | Photo: © RWD |
[TRITICUM] Grasses
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Bread Wheat (Triticum aestivum) | Photo: © RWD |
[LEYMUS] Leymus
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Lyme Grass (Leymus arenarius) | Photo: © RWD |
[BRIZA] Quaking-Grasses
The differences between the three Quaking-grasses in the UK:
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Greater Quaking-Grass (Briza maxima) | Photo: © RWD |
Quaking-Grass (Briza media) | Photo: © RWD |
[PARAPHOLIS] Hard-Grasses
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Hard Grass (Parapholis strigosa) | Photo: © RWD |
[KOELERIA] Hair-Grasses
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Crested Hair-Grass (Koeleria macrantha) | Photo: © RWD |
Family: Grasses [Poaceae] |