York County

Showing 651–700 of 1,545.

• 
  Hepatica nobilis Schreb. var. obtusa (Pursh) Steyerm. Native HENOO

  roundlobe hepatica · Ranunculaceae
• 
  Heracleum mantegazzianum Sommier & Levier Introduced HEMA17

  giant hogweed · Apiaceae
• 
  Heracleum maximum W. Bartram Native HEMA80

  common cowparsnip · Apiaceae
• 
  Hesperis matronalis L. Introduced HEMA3

  dames rocket · Brassicaceae
• 
  Hieracium aurantiacum L. Introduced HIAU

  orange hawkweed · Asteraceae
• 
  Hieracium caespitosum Dumort. Introduced HICA10

  meadow hawkweed · Asteraceae
• ⚘
  Hieracium canadense Michx. Native HICA3

  Canadian hawkweed · Asteraceae
• ⚘
  Hieracium canadense Michx. var. canadense Native HICAC

  Canadian hawkweed · Asteraceae
• 
  Hieracium paniculatum L. Native HIPA2

  Allegheny hawkweed · Asteraceae
• 
  Hieracium pilosella L. Introduced HIPI

  mouseear hawkweed · Asteraceae
• 
  Hieracium piloselloides Vill. Introduced HIPI2

  tall hawkweed · Asteraceae
• 
  Hieracium scabrum Michx. Native HISC

  rough hawkweed · Asteraceae
• 
  Hieracium venosum L. Native HIVE

  rattlesnakeweed · Asteraceae
• 
  Hierochloe odorata (L.) P. Beauv. Native HIOD

  sweetgrass · Poaceae
• 
  Holcus lanatus L. Introduced HOLA

  common velvetgrass · Poaceae
• 
  Honckenya peploides (L.) Ehrh. Native HOPE

  seaside sandplant · Caryophyllaceae
• 
  Honckenya peploides (L.) Ehrh. ssp. robusta (Fernald) Hultén Native HOPER2

  seaside sandplant · Caryophyllaceae
• 
  Hordeum jubatum L. Native HOJU

  foxtail barley · Poaceae
• 
  Hordeum jubatum L. ssp. jubatum Native HOJUJ

  foxtail barley · Poaceae
• 
  Hordeum murinum L. Introduced HOMU

  mouse barley · Poaceae
• 
  Hordeum murinum L. ssp. leporinum (Link) Arcang. Introduced HOMUL

  hare barley · Poaceae
• 
  Hordeum pusillum Nutt. Native HOPU

  little barley · Poaceae
• 
  Hordeum vulgare L. Introduced HOVU

  common barley · Poaceae
• 
  Hottonia inflata Elliott Native HOIN

  American featherfoil · Primulaceae
• 
  Houstonia caerulea L. Native HOCA4

  azure bluet · Rubiaceae
• 
  Houstonia purpurea L. Native HOPU2

  Venus' pride · Rubiaceae
• 
  Houstonia purpurea L. var. calycosa A. Gray Native HOPUC

  Venus' pride · Rubiaceae
• 
  Hudsonia tomentosa Nutt. Native HUTO

  woolly beachheather · Cistaceae
• 
  Humulus lupulus L. Both HULU

  common hop · Cannabaceae
• 
  Huperzia lucidula (Michx.) Trevis. Native HULU2

  shining clubmoss · Lycopodiaceae
• 
  Hydrangea paniculata Siebold Introduced HYPA

  panicled hydrangea · Hydrangeaceae
• 
  Hydrilla verticillata (L. f.) Royle Introduced HYVE3

  waterthyme · Hydrocharitaceae
• 
  Hydrocotyle americana L. Native HYAM

  American marshpennywort · Apiaceae
• 
  Hylotelephium erythrostictum (Miq.) H. Ohba Introduced HYER3

  garden stonecrop · Crassulaceae
• 
  Hylotelephium telephium (L.) H. Ohba Introduced HYTE10

  witch's moneybags · Crassulaceae
• 
  Hylotelephium telephium (L.) H. Ohba ssp. telephium Introduced HYTET2

  witch's moneybags · Crassulaceae
• 
  Hypericum boreale (Britton) E.P. Bicknell Native HYBO2

  northern St. Johnswort · Clusiaceae
• 
  Hypericum canadense L. Native HYCA7

  lesser Canadian St. Johnswort · Clusiaceae
• 
  Hypericum ellipticum Hook. Native HYEL

  pale St. Johnswort · Clusiaceae
• 
  Hypericum gentianoides (L.) Britton, Sterns & Poggenb. Native HYGE

  orangegrass · Clusiaceae
• 
  Hypericum majus (A. Gray) Britton Native HYMA2

  large St. Johnswort · Clusiaceae
• 
  Hypericum mutilum L. Native HYMU

  dwarf St. Johnswort · Clusiaceae
• 
  Hypericum perforatum L. Introduced HYPE

  common St. Johnswort · Clusiaceae
• 
  Hypericum prolificum L. Native HYPR

  shrubby St. Johnswort · Clusiaceae
• 
  Hypericum punctatum Lam. Native HYPU

  spotted St. Johnswort · Clusiaceae
• 
  Hypoxis hirsuta (L.) Coville Native HYHI2

  common goldstar · Liliaceae
• 
  Ilex laevigata (Pursh) A. Gray Native ILLA

  smooth winterberry · Aquifoliaceae
• 
  Ilex mucronata (L.) Powell, Savolainen & Andrews Native ILMU

  catberry · Aquifoliaceae
• 
  Ilex verticillata (L.) A. Gray Native ILVE

  common winterberry · Aquifoliaceae
• 
  Impatiens capensis Meerb. Native IMCA

  jewelweed · Balsaminaceae