Houston County

Showing 401–450 of 641.

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  Neptunia lutea (Leavenworth) Benth. Native NELU2

  yellow puff · Fabaceae
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  Nymphaea odorata Aiton Native NYOD

  American white waterlily · Nymphaeaceae
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  Nymphaea odorata Aiton ssp. odorata Native NYODO

  American white waterlily · Nymphaeaceae
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  Oenothera heterophylla Spach Native OEHE3

  variableleaf evening primrose · Onagraceae
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  Oenothera heterophylla Spach ssp. heterophylla Native OEHEH

  variableleaf evening primrose · Onagraceae
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  Oenothera laciniata Hill Native OELA

  cutleaf evening primrose · Onagraceae
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  Oenothera linifolia Nutt. Native OELI

  threadleaf evening primrose · Onagraceae
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  Oenothera spachiana Torr. & A. Gray Native OESP

  Spach's evening primrose · Onagraceae
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  Oldenlandia uniflora L. Native OLUN

  clustered mille graines · Rubiaceae
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  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae
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  Ophioglossum engelmannii Prantl Native OPEN

  limestone adderstongue · Ophioglossaceae
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  Oplismenus hirtellus (L.) P. Beauv. Both OPHI

  basketgrass · Poaceae
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  Oplismenus hirtellus (L.) P. Beauv. ssp. setarius (Lam.) Mez ex Ekman Native OPHIS

  basketgrass · Poaceae
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  Orbexilum simplex (Nutt. ex Torr. & A. Gray) Rydb. Native ORSI

  singlestem leather-root · Fabaceae
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  Osmunda cinnamomea L. Native OSCI

  cinnamon fern · Osmundaceae
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  Osmunda regalis L. Native OSRE

  royal fern · Osmundaceae
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  Osmunda regalis L. var. spectabilis (Willd.) A. Gray Native OSRES

  royal fern · Osmundaceae
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  Ostrya virginiana (Mill.) K. Koch Native OSVI

  hophornbeam · Betulaceae
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  Oxalis dillenii Jacq. Native OXDI2

  slender yellow woodsorrel · Oxalidaceae
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  Oxalis priceae Small Native OXPR

  tufted yellow woodsorrel · Oxalidaceae
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  Oxalis priceae Small ssp. texana (Small) Eiten Native OXPRT

  Texas woodsorrel · Oxalidaceae
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  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae
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  Oxypolis filiformis (Walter) Britton Native OXFI

  water cowbane · Apiaceae
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  Oxypolis rigidior (L.) Raf. Native OXRI

  stiff cowbane · Apiaceae
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  Palafoxia hookeriana Torr. & A. Gray Native PAHO

  sand palafox · Asteraceae
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  Palafoxia reverchonii (Bush) Cory Native PARE

  Reverchon's palafox · Asteraceae
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  Panicum anceps Michx. Native PAAN

  beaked panicgrass · Poaceae
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  Panicum brachyanthum Steud. Native PABR2

  prairie panicgrass · Poaceae
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  Panicum verrucosum Muhl. Native PAVE2

  warty panicgrass · Poaceae
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  Paronychia drummondii Torr. & A. Gray Native PADR

  Drummond's nailwort · Caryophyllaceae
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  Paspalum bifidum (Bertol.) Nash Native PABI3

  pitchfork crowngrass · Poaceae
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  Paspalum fluitans (Elliott) Kunth Native PAFL5

  horsetail paspalum · Poaceae
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  Paspalum laeve Michx. Native PALA10

  field paspalum · Poaceae
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  Paspalum notatum Flueggé Both PANO2

  bahiagrass · Poaceae
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  Paspalum plicatulum Michx. Native PAPL3

  brownseed paspalum · Poaceae
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  Paspalum setaceum Michx. Native PASE5

  thin paspalum · Poaceae
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  Paspalum urvillei Steud. Introduced PAUR2

  Vasey's grass · Poaceae
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  Pedicularis canadensis L. Native PECA

  Canadian lousewort · Scrophulariaceae
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  Pedicularis canadensis L. ssp. canadensis Native PECAC3

  Canadian lousewort · Scrophulariaceae
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  Pediomelum digitatum (Nutt. ex Torr. & A. Gray) Isely Native PEDI9

  palmleaf Indian breadroot · Fabaceae
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  Peltandra virginica (L.) Schott Native PEVI

  green arrow arum · Araceae
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  Penstemon laxiflorus Pennell Native PELA10

  nodding beardtongue · Scrophulariaceae
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  Penstemon murrayanus Hook. Native PEMU2

  scarlet beardtongue · Scrophulariaceae
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  Penthorum sedoides L. Native PESE6

  ditch stonecrop · Crassulaceae
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  Phanopyrum gymnocarpon (Elliott) Nash Native PHGY2

  savannah-panicgrass · Poaceae
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  Phemeranthus rugospermus (Holz.) Kiger Native PHRU8

  prairie fameflower · Portulacaceae
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  Phlox pilosa L. Native PHPI

  downy phlox · Polemoniaceae
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  Phlox pilosa L. ssp. pulcherrima Lundell Native PHPIP

  downy phlox · Polemoniaceae
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  Physalis mollis Nutt. Native PHMO9

  field groundcherry · Solanaceae
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  Physalis mollis Nutt. var. mollis Native PHMOM2

  field groundcherry · Solanaceae