| Date |
Flower |
Family |
Scientific Name |
Photo |
Caption |
| 2003-06-06 | Mountain Lady Slipper | - Orchid Family | Cypripedium montanum |  | Wenaha-Tucannon Wilderness - - - June 6, 2003 |
| 2004-09-19 | Mountain Ash | - Rose Family | Sorbus scopulina |  | Parks Creek, Williamette National Forest - - - August 27, 2002 |
| 2002-07-21 | Monkeyflower, Yellow | - Snapdragon Family | Mimulus gattatus |  | Dunstan Homestead Preserve - - - July 21, 2002 |
| 2012-02-14 | Monkeyflower, Orange Bush | Snapdragon Family | Mimulus aurantiacus |  | Eagle Rock Trail - El Chorro Regional Park, California - - - February 14, 2012 |
| 2002-08-29 | Monkeyflower, Lewis's | - Snapdragon Family | Mimulus lewisii |  | Eagle Cap Wilderness - - - August 29, 2002 |
| 2007-04-23 | Monkeyflower, Kellogg's | - Snapdragon Family | Mimulus kelloggii |  | Viewpoint Mike Trail - - - April 21, 2007 |
| 2003-07-02 | Monkeyflower, Dwarf | - Snapdragon Family | Mimulus nanus |  | Little Blitzen Gorge, Steens Mountain - July 2, 2003 |
| 2002-04-04 | Monkeyflower, Chickweed | - Snapdragon Family | Mimulus alsinoides |  | Columbia River Gorge - April 4, 2002 |
| 2005-03-28 | Mojave Desert Star | - Sunflower Family | Momoptilon bellioides |  | Salton Sea, Colorado Desert - - - March 15, 2005 |
| 2017-06-13 | Mock-orange | Hydrangea | Philadelphus lewisii |  | Salem Audubon Nature Reserve - - - June 13, 2017 |
| 2003-06-08 | Mock Orange | - Hydrangea Family | Philadeiphus lewisii |  | Wenaha-Tucannon Wilderness - - - June 8, 2003 |
| 2002-09-20 | Mint, Coyote | - Mint Family | Monardella odoratissima |  | Little Blitzen Gorge, Steens Mountain - - - September 20, 2002 |
| 2003-04-07 | Miner's-lettuce | - Purslane Family | Montia perfoliata |  | Catherine Creek, Columbia Gorge National Scenic Area - - - April 7, 2003 |
| 2017-06-29 | Milkweed, Showy | Asclepiadacae (Milkweed) | Asclepias speciosa |  | Salem Audubon Nature Reserve - - - June 26, 2017 |
| 2018-09-20 | Milkweed, Orange | Milkweed | Asclepias tuberosa |  | Salem Audubon Nature Reserve - - - September 20, 2018 |
| 2009-12-18 | Milkweed, Leafless | - Milkweed Family | Asclepias subulata |  | Buckskin Mountain State Park - - - - December 18, 2009 |
| 2004-03-19 | Milk-vetch, Wooly-pod | - Pea Family | Astragalus purshi |  | Deschutes River State Recreation Area - - - - March 12, 2004 |
| 2007-06-28 | Milk-vetch, Rogue River | - Pea Family | Astragalus accidens |  | Viewpoint Mike Trail - - - April 26, 2007 |
| 2002-03-19 | Mesquite, Screw-bean | | Prosopis pubescens |  | San Andreas Oasis, California - - - March 19, 2002 |
| 2009-12-14 | Mesquite, Honey | - Pea Family | Prosopis glandulosa |  | Buckskin Mountain State Park, Arizona - - - December 14, 2009 |
