Harris County

Showing 801–850 of 1,387.

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  Oenothera lindheimeri (Engelm. & A. Gray) W.L. Wagner & Hoch Native OELI2

  Lindheimer's beeblossom · 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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  Oenothera speciosa Nutt. Native OESP2

  pinkladies · Onagraceae
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  Oenothera villosa Thunb. Native OEVI

  hairy evening primrose · Onagraceae
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  Oenothera villosa Thunb. ssp. villosa Native OEVIV

  hairy evening primrose · Onagraceae
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  Oldenlandia boscii (DC.) Chapm. Native OLBO

  Bosc's mille graines · Rubiaceae
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  Oldenlandia uniflora L. Native OLUN

  clustered mille graines · Rubiaceae
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  Oligoneuron nitidum (Torr. & A. Gray) Small Native OLNI

  shiny goldenrod · Asteraceae
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  Oligoneuron rigidum (L.) Small Native OLRI

  stiff goldenrod · Asteraceae
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  Onoclea sensibilis L. Native ONSE

  sensitive fern · Dryopteridaceae
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  Onosmodium bejariense DC. ex A. DC. Native ONBE

  soft-hair marbleseed · Boraginaceae
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  Onosmodium bejariense DC. ex A. DC. var. bejariense Native ONBEB

  soft-hair marbleseed · Boraginaceae
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  Ophioglossum crotalophoroides Walter Native OPCR

  bulbous adderstongue · Ophioglossaceae
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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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  Opuntia humifusa (Raf.) Raf. Native OPHU

  devil's-tongue · Cactaceae
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  Orbexilum pedunculatum (Mill.) Rydb. Native ORPE

  Sampson's snakeroot · Fabaceae
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  Orbexilum pedunculatum (Mill.) Rydb. var. pedunculatum Native ORPEP2

  Sampson's snakeroot · Fabaceae
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  Orbexilum simplex (Nutt. ex Torr. & A. Gray) Rydb. Native ORSI

  singlestem leather-root · Fabaceae
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  Oryza sativa L. Introduced ORSA

  rice · Poaceae
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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 albicans Kunth Native OXAL

  radishroot woodsorrel · Oxalidaceae
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  Oxalis albicans Kunth ssp. albicans Native OXALA

  radishroot woodsorrel · Oxalidaceae
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  Oxalis debilis Kunth Introduced OXDE3

  pink woodsorrel · Oxalidaceae
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  Oxalis debilis Kunth var. corymbosa (DC.) Lourteig Introduced OXDEC

  pink 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 rubra A. St.-Hil. Introduced OXRU

  windowbox woodsorrel · Oxalidaceae
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  Oxalis violacea L. Native OXVI

  violet woodsorrel · Oxalidaceae
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  Packera glabella (Poir.) C. Jeffrey Native PAGL17

  butterweed · Asteraceae
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  Packera tampicana (DC.) C. Jeffrey Native PATA5

  Great Plains ragwort · Asteraceae
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  Paederia foetida L. Introduced PAFO3

  stinkvine · Rubiaceae
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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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  Palafoxia rosea (Bush) Cory Native PARO

  rosy palafox · Asteraceae
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  Palafoxia rosea (Bush) Cory var. rosea Native PAROR

  rosy palafox · Asteraceae
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  Panicum amarum Elliott Native PAAM2

  bitter panicgrass · Poaceae
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  Panicum anceps Michx. Native PAAN

  beaked panicgrass · Poaceae
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  Panicum bergii Arechav. Introduced PABE4

  Berg's panicgrass · Poaceae
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  Panicum brachyanthum Steud. Native PABR2

  prairie panicgrass · Poaceae
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  Panicum dichotomiflorum Michx. Native PADI

  fall panicgrass · Poaceae
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  Panicum dichotomiflorum Michx. var. dichotomiflorum Native PADID

  fall panicgrass · Poaceae
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  Panicum hallii Vasey Native PAHA

  Hall's panicgrass · Poaceae
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  Panicum hemitomon Schult. Native PAHE2

  maidencane · Poaceae
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  Panicum rigidulum Bosc ex Nees Native PARI4

  redtop panicgrass · Poaceae
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  Panicum rigidulum Bosc ex Nees var. combsii (Scribn. & C.R. Ball) Lelong Native PARIC

  Combs' panicgrass · Poaceae