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Wildflower Mount Diablo Dwarf Sack Clover Invasive Scientific Name: Trifolium depauperatum Family: Fabaceae (Legume Family) Blooms: Mar - May Color: Red-Pink Annual herb Introduced Native to Europe Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Kevin Hintsa

brochures about trails, wildlife and plants Brochures and Resources MDIA publishes a library of informative brochures that are available for download (PDF). Categories include Trail, Plant, and Wildlife Guides. Filter by Category Select Category Blooming Now List View or Download Plant or Bloom Guide Common Mammal Tracks of Mount Diablo Brochure View or Download Wildlife Guide Eagle Peak - Back Creek Loop View or Download Trail Guide, or Park Information Mary BowermanTrail Interpretive Guide View or Download Trail Guide, or Park Information Mount Diablo Education Center at Mitchell Canyon Brochure View or Download Trail Guide, or Park Information Native Plant Garden Plant Inventory List View or Download Plant or Bloom Guide Peregrines of the Diablo Region Brochure View or Download Wildlife Guide Rare and Endangered Plant Species List View or Download Plant or Bloom Guide Summit via Back Creek and Mitchell Canyon View or Download Trail Guide, or Park Information Trail Through Time (A Geological Journey) View or Download Trail Guide, or Park Information Your Dog in the Park View or Download Trail Guide, or Park Information Common Ferns of Mitchell Canyon Brochure View or Download Plant or Bloom Guide Common Mammals of Mount Diablo Brochure View or Download Wildlife Guide Fall Trail Loop View or Download Trail Guide, or Park Information Mitchell Canyon Trail Interpretive Guide View or Download Trail Guide, or Park Information Mount Diablo State Park Brochure View or Download Trail Guide, or Park Information Native Plant Garden at Mitchell Canyon Map View or Download Plant or Bloom Guide Plants on the Summit and Fire Interpretive Trail List View or Download Plant or Bloom Guide Rock City Map View or Download Trail Guide, or Park Information Tarantulas: Protect These Gentle Giants Brochure View or Download Wildlife Guide View from Mount Diablo Brochure View or Download Trail Guide, or Park Information

Wildflower Mount Diablo Purple False Gilia Scientific Name: Allophyllum giliodes Family: Polemoniaceae Blooms: Apr - Jun Color: Blue-Purple Annual herb Native, endemic to California Also found as Allophyllum divaricatum. Typically located in Foothill Woodland and Chaparral. Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Steve Beatty Steve Beatty Leaf detail

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Wildflower Mount Diablo Cocklebur Scientific Name: Xanthium strumarium Family: Asteraceae (Sunflower Family Blooms: Jul-Oct Color: Yellow-Orange Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants

Wildflower Mount Diablo Sheep Parsnip Scientific Name: Lomatium macrocarpum Family: Apiaceae (Parsley-Carrot Family) Blooms: Apr Color: Yellow-Orange Perennial herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Kevin Hintsa

Mount Diablo Dragonflies and Damselflies A Preliminary Survey by Douglas Vaughan Berkeley, California May 2003 - May 2004 I conducted a preliminary survey of adult dragonflies and damselflies (Odonata) at Mount Diablo State Park between May 2003 and May 2004. During this period, I made 12 visits to the Park, surveying each of four different sites two to six times. I made no visits during April, September, or the period between mid-June and mid-July—nor during the winter months. Two tables summarize my findings. Several points underscore the preliminary nature of this survey: Unsurveyed sites, including Frog Pond on the south side of the mountain and Mitchell Canyon, might yield additional species. Pine Pond, the largest water feature in the Park and site of the greatest observed diversity, is surrounded by dense stands of emergent vegetation; a more aggressive survey that penetrated this vegetation and reached the main body of the pond might produce additional species there. During mid-season many dragonflies patrol meadows well away from water; I was unable to identify many of these insects. Great spreadwing, damselfly, Sulphur Springs Pond | Michael Marchiano Nonetheless, 25 of the 38 species currently known from Contra Costa County were found in the Park, including two observed only by others. I captured and examined in hand at least one individual of each of the 23 species I observed, except California Darner (Rhionaeschna [=Aeshna ] californica ), Common Whitetail (Plathemis lydia ), and Black Saddlebags (Tramea lacerata ), which were confidently identified in flight. Several additional species known from Contra Costa County seem likely to be present in the Park, especially Pacific and Black-fronted Forktails (Ischnura cervula and I. denticollis ), Aztec Dancer (Argia nahuana ), Exclamation Damsel (Zoniagrion exclamationis ), Western Pondhawk (Erythemis collocata ), Widow Skimmer (Libellula luctosa ), and Blue Dasher (Pachydiplax longipennis ). Indeed, I briefly observed a probable male Widow Skimmer in Donner Canyon but was not able to identify it with certainty. In addition, several species not yet found in Contra Costa County might be expected in the Park. Prominent examples include California and Emma’s Dancers (Argia agrioides and A. emma ), Twelve-spotted Skimmer (Libellula pulchella ), Wandering Glider (Pantala flavescens ), and Western Meadowhawk (Sympetrum occidentale ). The attached tables offer two presentations of the survey results. The annotated checklist indicates the dates on which the four sites were visited and the species found at each. The abundances indicated in the notes for each species should be taken as speculative. Species indicated as “uncommon,” in particular, might well be more common at other sites (or, say, within the perimeter of Pine Pond) or during periods I did not visit the Park. The second table provides a rough indication of seasonal distributions , though no conclusions should be drawn for species observed only once or twice. Note also that this table merges observations from March through mid-May 2004 with those of mid-May through October 2003. The dots in the four upper rows of the table indicate the approximate dates of visits to the four surveyed sites. In conclusion, Mt. Diablo supports a significant diversity of dragonfly and damselfly species, especially in light of the relatively few ponds and perennial streams within the Park. Particularly notable were the large numbers of patrolling darners (mostly Blue-eyed Darners) over the meadows well away from water during much of the spring and summer, and the striking abundance of Black Spreadwings during the first half of the season. Table I: Mount Diablo Odonata Annotated List Table II: Mount Diablo Odonata Seasonal Distribution * See Annotated List Source: Biologist/nature photographer David Liebman of Norfolk Below is a list of additional websites for information about dragonflies and damselflies: Virginia's Natural Heritage Program at http://www.vararespecies.org/ USGS Dragonflies and Damselflies of the United States: https://www.usgs.gov/science-explorer-results?es=dragonflies+and+damselflies Worldwide Dragonfly Association at https://worlddragonfly.org/ Digital Dragonflies at https://agrilife.org/dragonfly/ Odonata Information Network at http://www.dragonflies.org/ Catching and Preserving Dragonflies FAQ: http://dragonflywebsite.com/articles/collecting/morse2.html Dragonfly Biodiversity: https://www.pugetsound.edu/academics/academic-resources/slater- museum/biodiversityresources/dragonflies/

Wildflower Mount Diablo Sickleleaf Onion Scientific Name: Allium falcifolium Family: Alliaceae (Onion Family) Blooms: Apr - Jun Color: White Perennial herb (bulb) Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Kevin Hintsa

Wildflower Mount Diablo Robust Verbena, Western Vervain Scientific Name: Verbena lasiostachys Family: Verbenaceae Blooms: Apr - Jul Color: Blue-Purple Perennial herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Mike Woodring

Wildflower Mount Diablo Bird's Eye Gilia Scientific Name: Gilia tricolor ssp. tricolor Family: Polemoniaceae (Phlox Familiy) Blooms: Mar - May Color: Blue-Purple Annual herb Native, endemic to California Each pale blue flower is centered in dark purple, with a yellow throat and complemented by blue pollen. You'll find drifts of bird's eye gilia at Deer Flat or along the Waterfall Trail. Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Mike Woodring

Wildflower Mount Diablo Western Wallflower Scientific Name: Erysimum capitatum var. capitatum Family: Brassicaceae (Mustard Family) Blooms: Mar - May Color: Yellow-Orange Perennial herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Jayah Faye Paley

Wildflower Mount Diablo Fitch's Tarweed Scientific Name: Centromadia fitchii Family: Asteraceae (Sunflower Family) Blooms: Jun - Oct Color: Yellow-Orange Annual herb Native Jump to Blooming Now Blue / Purple Red / Pink White Yellow / Orange Invasive Plants Daniel Fitzgerald Daniel Fitzgerald Daniel Fitzgerald Daniel Fitzgerald