Machaeranthera bigelovii --- Bigelow's tansyaster
Machaeranthera bigelovii var. bigelovii --- Bigelow's tansyaster
Machaeranthera canescens --- hoary tansyaster
Machaeranthera canescens ssp. canescens --- hoary tansyaster
Machaeranthera canescens ssp. canescens var. canescens --- hoary tansyaster
Machaeranthera canescens ssp. glabra --- hoary tansyaster
Machaeranthera canescens ssp. glabra var. glabra --- hoary tansyaster
Machaeranthera coloradoensis --- Colorado tansyaster
Machaeranthera coloradoensis var. coloradoensis --- Colorado tansyaster
Machaeranthera grindelioides --- rayless tansyaster
Machaeranthera grindelioides var. grindelioides --- rayless tansyaster
Machaeranthera pinnatifida --- lacy tansyaster
Machaeranthera pinnatifida ssp. pinnatifida --- lacy tansyaster
Machaeranthera pinnatifida ssp. pinnatifida var. glaberrima --- lacy tansyaster
Machaeranthera pinnatifida ssp. pinnatifida var. pinnatifida --- lacy tansyaster
Machaeranthera tanacetifolia --- tanseyleaf tansyaster
Madia glomerata --- mountain tarweed
Mahonia repens --- creeping barberry
Maianthemum canadense --- Canada mayflower
Maianthemum racemosum --- feathery false lily of the vally
Maianthemum racemosum ssp. amplexicaule --- feathery false lily of the vally
Maianthemum stellatum --- starry false lily of the vally
Malacothrix sonchoides --- sowthistle desertdandelion
Malacothrix torreyi --- Torrey's desertdandelion
Malcolmia africana --- African mustard
Malus coronaria --- sweet crabapple
Malus coronaria var. coronaria --- sweet crabapple
Malus pumila --- paradise apple
Malva crispa --- curly mallow
Malva moschata --- musk mallow
Malva neglecta --- common mallow
Malva parviflora --- cheeseweed mallow
Malva rotundifolia --- low mallow
Malva sylvestris --- high mallow
Marah oreganus --- coastal manroot
Marrubium vulgare --- horehound
Marsilea oligospora --- Pacific waterclover
Marsilea vestita --- hairy waterclover
Marsilea vestita ssp. vestita --- hairy waterclover
Matricaria discoidea --- disc mayweed
Medicago lupulina --- black medick
Medicago polymorpha --- burclover
Medicago sativa --- alfalfa
Medicago sativa ssp. falcata --- yellow alfalfa
Medicago sativa ssp. sativa --- alfalfa
Melica bulbosa --- oniongrass
Melica smithii --- Smith's melicgrass
Melica spectabilis --- purple oniongrass
Melica subulata --- Alaska oniongrass
Melica subulata var. pammelii --- Pammel's oniongrass
Melica subulata var. subulata --- Alaska oniongrass
Melilotus officinalis --- yellow sweetclover
Mentha arvensis --- wild mint
Mentha spicata --- spearmint
Mentzelia albicaulis --- whitestem blazingstar
Mentzelia decapetala --- tenpetal blazingstar
Mentzelia dispersa --- bushy blazingstar
Mentzelia dispersa var. compacta --- Nevada blazingstar
Mentzelia dispersa var. dispersa --- bushy blazingstar
Mentzelia dispersa var. latifolia --- bushy blazingstar
Mentzelia laevicaulis --- smoothstem blazingstar
Mentzelia laevicaulis var. laevicaulis --- smoothstem blazingstar
Mentzelia montana --- variegated-bract blazingstar
Mentzelia multiflora --- Adonis blazingstar
Mentzelia multiflora var. multiflora --- Adonis blazingstar
Mentzelia nuda --- bractless blazingstar
Mentzelia nuda var. stricta --- bractless blazingstar
Mentzelia oligosperma --- chickenthief
Mentzelia pumila --- dwarf mentzelia
Mentzelia pumila var. pumila --- dwarf mentzelia
Mentzelia rusbyi --- Rusby's blazingstar
Mentzelia sinuata --- leechleaf blazingstar
Mentzelia speciosa --- jeweled blazingstar
Menyanthes trifoliata --- buckbean
Menziesia ferruginea --- rusty menziesia
Mertensia alpina --- alpine bluebells
Mertensia arizonica --- aspen bluebells
Mertensia brevistyla --- shortstyle bluebells
Mertensia ciliata --- tall fringed bluebells
Mertensia ciliata var. ciliata --- tall fringed bluebells
Mertensia humilis --- Rocky Mountain bluebells
Mertensia lanceolata --- prairie bluebells
Mertensia lanceolata var. coriacea --- prairie bluebells
Mertensia lanceolata var. lanceolata --- prairie bluebells
Mertensia lanceolata var. secundorum --- prairie bluebells
Mertensia oblongifolia --- oblongleaf bluebells
Microseris nutans --- nodding microceris
Mimulus breviflorus --- shortflower monkeyflower
Mimulus breweri --- Brewer's monkeyflower
Mimulus floribundus --- manyflowered monkeyflower
Mimulus glabratus --- roundleaf monkeyflower
Mimulus glabratus var. jamesii --- James' monkeyflower
Mimulus guttatus --- seep monkeyflower
Mimulus lewisii --- purple monkeyflower
Mimulus moschatus --- muskflower
Mimulus moschatus var. moschatus --- muskflower
Mimulus nanus --- dwarf purple monkeyflower
Mimulus nanus ssp. nanus --- dwarf purple monkeyflower
Mimulus rubellus --- little redstem monkeyflower
Mimulus suksdorfii --- Suksdorf's monkeyflower
Mimulus tilingii --- Tiling's monkeyflower
Mimulus tilingii var. tilingii --- Tiling's monkeyflower
Minuartia austromontana --- Columbian stitchwort
Minuartia dawsonensis --- rock stitchwort
Minuartia elegans --- elegant stitchwort
Minuartia macrantha --- House's stitchwort
Minuartia nuttallii --- Nuttall's sandwort
Minuartia nuttallii ssp. nuttallii --- Nuttall's sandwort
Minuartia obtusiloba --- twinflower sandwort
Minuartia rubella --- beautiful sandwort
Mirabilis hirsuta --- hairy four o'clock
Mirabilis linearis --- narrowleaf four o'clock
Mirabilis nyctaginea --- heartleaf four o'clock
Mitella pentandra --- fivestamen miterwort
Mitella stauropetala --- smallflower miterwort
Mitella stauropetala var. stenopetala --- drywoods miterwort
Moehringia --- sandwort
Moehringia lateriflora --- bluntleaf sandwort
Mollugo verticillata --- green carpetweed
Monarda fistulosa --- wild bergamot
Monarda fistulosa ssp. fistulosa --- wild bergamot
Monarda fistulosa ssp. fistulosa var. menthifolia --- wild bergamot
Monarda pectinata --- pony beebalm
Monardella glauca --- pale monardella
Moneses uniflora --- single delight
Monolepis nuttalliana --- Nuttall's povertyweed
Monolepis pusilla --- small povertyweed
Monotropa hypopithys --- pinesap
Monroa squarrosa --- false buffalograss
Montia chamissoi --- water minerslettuce
Montia linearis --- narrowleaf minerslettuce
Morus alba --- white mulberry
Muhlenbergia andina --- foxtail muhly
Muhlenbergia asperifolia --- scratchgrass
Muhlenbergia cuspidata --- plains muhly
Muhlenbergia filiculmis --- slimstem muhly
Muhlenbergia filiformis --- pullup muhly
Muhlenbergia glomerata --- spiked muhly
Muhlenbergia mexicana --- Mexican muhly
Muhlenbergia minutissima --- annual muhly
Muhlenbergia montana --- mountain muhly
Muhlenbergia pungens --- sandhill muhly
Muhlenbergia racemosa --- marsh muhly
Muhlenbergia richardsonis --- mat muhly
Muhlenbergia torreyi --- ring muhly
Musineon divaricatum --- leafy wildparsley
Musineon divaricatum var. divaricatum --- leafy wildparsley
Musineon divaricatum var. hookeri --- Hooker's wildparsley
Musineon tenuifolium --- slender wildparsley
Musineon vaginatum --- sheathed wildparsley
Myosotis arvensis --- field forget-me-not
Myosotis asiatica --- Asian forget-me-not
Myosotis laxa --- bay forget-me-not
Myosotis scorpioides --- true forget-me-not
Myosotis stricta --- strict forget-me-not
Myosotis sylvatica --- woodland forget-me-not
Myosotis verna --- spring forget-me-not
Myosurus apetalus --- bristly mousetail
Myosurus apetalus var. borealis --- bristly mousetail
Myosurus apetalus var. montanus --- bristly mousetail
Myosurus minimus --- tiny mousetail
Myriophyllum quitense --- Andean watermilfoil
Myriophyllum sibiricum --- shortspike watermilfoil
Myriophyllum verticillatum --- whorl-leaf watermilfoil

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