Table 1.

Plant species used in image search experiment. Bloom period is for East Lansing, Michigan as reported in [15,20].

plant species
Latin name	common name	bloom period
Anemone canadensis	meadow anemone	early
Angelica atropurpurea	angelica	early
Aquilegia canadensis	columbine	early
Coreopsis lanceolata	sand coreopsis	early
Fragaria virginiana	wild strawberry	early
Geranium maculatum	wild geranium	early
Heracleum maximum	wild cow-parsnip	early
Heuchera americana	alum root	early
Hydrophyllum virginianum	Virginia waterleaf	early
Penstemon hirsutus	hairy beardtongue	early
Sambucus racemosa	red elderberry	early
Senecio obovatus	round leaved ragwort	early
Zizia aurea	golden alexander	early
Allium cernuum	nodding wild onion	middle
Amorpha canescens	leadplant	middle
Apocynum cannabinum	Indian hemp	middle
Asclepias incarnata	swamp milkweed	middle
Asclepias tuberosa	butterfly weed	middle
Ceanothus americanus	New Jersey tea	middle
Cephalanthus occidentalis	buttonbush	middle
Dasiphora fruticosa	shrubby cinquefoil	middle
Desmodium canadense	showy tick trefoil	middle
Oenothera biennis	evening primrose	middle
Ratibida pinnata	yellow coneflower	middle
Rosa setigera	Michigan rose	middle
Scrophularia marilandica	late figwort	middle
Spiraea alba	meadowsweet	middle
Verbena stricta	hoary vervain	middle
Veronicastrum virginicum	Culver's root	middle
Agastache nepetoides	yellow giant hyssop	late
Aster laevis	smooth blue aster	late
Cacalia atriplicifolia	pale Indian plantain	late
Eupatorium perfoliatum	common boneset	late
Helianthus strumosus	paleleaf woodland sunflower	late
Lespedeza hirta	hairy bush-clover	late
Liatris aspera	rough blazing star	late
Lobelia siphilitica	great blue lobelia	late
Monarda punctata	horsemint	late
Silphium perfoliatum	cup plant	late
Solidago riddellii	Riddell's goldenrod	late
Solidago speciosa	showy goldenrod	late
Symphyotrichum novae-angliae	New England aster	late
Vernonia missurica	ironweed	late