Flora of Philadelphia
Locality: Philadelphia, Pennsylvania

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Families: 176
Genera: 833
Species: 2132
Total Taxa: 2187

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Image source: all images linked voucher images only

Helianthus divaricatus
Woodland Sunflower
Helianthus giganteus
Giant Sunflower
Helianthus grosseserratus
Saw-Tooth Sunflower
Helianthus laetiflorus
Hybrid Sunflower
Helianthus maximiliani
Maximilian Sunflower
Helianthus mollis
Ashy Sunflower
Helianthus petiolaris
Prairie Sunflower
Helianthus strumosus
Pale-Leaf Woodland Sunflower
Helianthus tuberosus
Jerusalem-Artichoke
Heliotropium europaeum
European Heliotrope
Heliotropium supinum
Dwarf Heliotrope
Helonias bullata
Swamp-Pink
Hemerocallis fulva
Orange Day-Lily
Hemizonia pungens
common spikeweed
Hepatica acutiloba
Sharp-Lobe Hepatica
Hepatica americana
Round-Lobe Hepatica
Heracleum lanatum
American Cow-Parsnip
Heracleum maximum
American Cow-Parsnip
Herniaria glabra
Smooth Rupturewort
Herniaria hirsuta
Hairy Rupturewort
Hesperis matronalis
Dame's Rocket
Heteranthera dubia
Grass-Leaf Mud-Plantain
Heteranthera multiflora
Bouquet Mud-Plantain
Heteranthera reniformis
Kidney-Leaf Mud-Plantain
Heuchera sp.
alumroot
Hibiscus moscheutos
Crimson-Eye Rose-Mallow
Hibiscus palustris
Crimson-Eye Rose-Mallow
Hibiscus syriacus
Rose-of-Sharon
Hibiscus trionum
Flower-of-An-Hour
Hieracium aurantiacum
Orange Hawkweed
Hieracium flagellare
Whiplash Hawkweed
Hieracium florentinum
Tall Hawkweed
Hieracium paniculatum
Allegheny Hawkweed
Hieracium pratense
Gronovis Hawkweed
Hieracium scabrum
Rough Hawkweed
Hieracium venosum
Rattlesnake-Weed
Hieracium vulgatum
Common Hawkweed
Holcus lanatus
Common Velvet Grass
Hordeum jubatum
Fox-Tail Barley
Hordeum vulgare
Common Barley
Houstonia caerulea
Quaker-Ladies
Houstonia purpurea
Venus'-Pride
Humulus japonicus
Japanese Hop
Humulus lupulus
Common Hop
Huperzia lucidula
Shining Fir-Moss
Hybanthus concolor
Green-Violet
Hydrangea arborescens
Wild Hydrangea
Hydrangea paniculata
Panicled Hydrangea
Hydrangea quercifolia
Oak-Leaf Hydrangea
Hydrocotyle americana
American Marsh-Pennywort
Hydrocotyle sibthorpioides
Lawn Marsh-Pennywort
Hydrocotyle umbellata
Many-Flower Marsh-Pennywort
Hyoscyamus albus
White Henbane
Hyoscyamus niger
Black Henbane
Hypericum boreale
Northern St. John's-Wort
Hypericum canadense
Lesser Canadian St. John's-Wort
Hypericum ellipticum
Pale St. John's-Wort
Hypericum hypericoides
St. Andrew's-Cross
Hypericum maculatum
Dotted St. John's-Wort
Hypericum mutilum
Dwarf St. John's-Wort
Hypericum perforatum
Common St. John's-Wort
Hypericum punctatum
Spotted St. John's-Wort
Hypericum spathulatum
Shrubby St. John's-Wort
Hypochaeris glabra
Smooth Cat's-Ear
Hypochaeris radicata
Hairy Cat's-Ear
Hypoxis hirsuta
Eastern Yellow Star-Grass
Iberis sempervirens
Evergreen Candytuft
Ilex cornuta
Horned Holly
Ilex glabra
Inkberry
Ilex opaca
American Holly
Ilex verticillata
Common Winterberry
Impatiens balsamina
Garden-Balsam
Impatiens capensis
Spotted Touch-Me-Not
Impatiens pallida
Pale Touch-Me-Not
Inula helenium
Elecampane
Ipomoea batatas
Sweet-Potato
Ipomoea hederacea
Ivy-Leaf Morning-Glory
Ipomoea imperati
Beach Morning-Glory
Ipomoea nil
White-Edge Morning-Glory
Ipomoea pandurata
Man-of-the-Earth
Ipomoea purpurea
Common Morning-Glory