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Criteria:   found in Siskiyou County  •   is native  •  group by lifeform
3506  records include photos for these plants # number of sources
Scientific Name Common Name Lifeform #
  Lifeform: Annual680 plants
  Lifeform: Biennial2 plants
  Lifeform: Perennial2288 plants
  Lifeform: Fern79 plants
Adiantum aleuticum Five finger fern Fern 9
Adiantum capillus-veneris Venus hair Fern 14
Adiantum shastense Shasta adiantum Fern  
Aspidotis densa Lace fern Fern 1
Asplenium septentrionale Northern spleenwort Fern (rhizomatous)  
Asplenium trichomanes spleenwort Fern (rhizomatous) 3
Asplenium trichomanes ssp. trichomanes spleenwort Fern (rhizomatous)  
Athyrium distentifolium Fern  
Athyrium distentifolium var. americanum American alpine lady fern Fern  
Athyrium filix-femina Common ladyfern Fern 19
Athyrium filix-femina ssp. cyclosorum Subarctic ladyfern Fern  
Athyrium filix-femina var. cyclosorum Western lady fern Fern 1
Azolla mexicana Mexican mosquito fern Fern  
Azolla microphylla Mexican mosquito fern Fern  
Botrychium crenulatum Scalloped moonwort Fern (rhizomatous)  
Botrychium minganense Mingan moonwort Fern (rhizomatous)  
Botrychium montanum Western goblin Fern (rhizomatous)  
Botrychium multifidum Common grapefern Fern  
Botrychium pinnatum Northwestern moonwort Fern (rhizomatous)  
Botrychium pumicola Crater lake grapefern Fern  
Botrychium simplex Little grape fern Fern  
Botrychium simplex var. compositum Little grapefern Fern  
Botrychium simplex var. simplex Least moonwort Fern  
Botrychium virginianum Rattlesnake fern Fern  
Botrypus virginianus Rattlesnake fern Fern  
Cheilanthes gracillima Lace lip fern Fern 1
Cheilanthes intertexta Coastal lipfern Fern  
Cryptogramma acrostichoides American parsley fern Fern  
Cryptogramma cascadensis Cascade parsely fern Fern  
Cystopteris fragilis Brittle fern Fern 1
Dryopteris arguta Wood fern Fern 7
Dryopteris expansa Spreading wood fern Fern 4
Equisetum arvense Common horsetail Fern 6
Equisetum hyemale Scouringrush horsetail Fern 31
Equisetum hyemale ssp. affine Giant scouring rush Fern 7
Equisetum hyemale var. affine Scouringrush horsetail Fern 4
Equisetum laevigatum Smooth scouring rush Fern 2
Equisetum telmateia Giant horsetail Fern 3
Equisetum telmateia ssp. braunii Giant horsetail Fern 1
Equisetum telmateia var. braunii Giant horsetail Fern 1
Isoetes bolanderi Bolander's quillwort Fern  
Isoetes bolanderi var. pygmaea Bolander's quillwort Fern  
Isoetes echinospora Spiny spored quillwort Fern  
Isoetes howellii Quillwort Fern  
Isoetes nuttallii Nuttall's quillwort Fern  
Isoetes occidentalis Western quillwort Fern  
Isoetes tenella Spiny spore quillwort Fern  
Marsilea vestita Hairy waterclover Fern 6
Marsilea vestita ssp. vestita Hairy pepperwort Fern 5
Myriopteris gracillima Lace lip fern Fern 1
Myriopteris intertexta Coastal lip fern Fern  
Ophioglossum pusillum Northern adder's tongue Fern (rhizomatous)  
Pellaea brachyptera Sierra cliff brake Fern  
Pellaea breweri Brewer's cliff brake Fern  
Pellaea mucronata Bird's foot fern Fern 2
Pentagramma triangularis Gold back fern Fern 3
Pentagramma triangularis ssp. triangularis Gold back fern Fern  
Polypodium californicum California polypody Fern 12
Polypodium calirhiza Licorice fern Fern 3
Polypodium glycyrrhiza Licorice fern Fern 8
Polypodium hesperium Western polypody Fern  
Polystichum californicum California sword fern Fern  
Polystichum imbricans Narrow leaved sword fern Fern 1
Polystichum imbricans ssp. curtum Cliff sword fern Fern  
Polystichum imbricans ssp. imbricans Rock sword fern Fern  
Polystichum kruckebergii Kruckeberg's sword fern Fern (rhizomatous)  
Polystichum lemmonii Lemmon's sword fern Fern 1
Polystichum lonchitis Holly fern Fern (rhizomatous)  
Polystichum munitum Western sword fern Fern 43
Polystichum scopulinum Mountain holly fern Fern  
Pteridium aquilinum Western brackenfern Fern 5
Pteridium aquilinum var. pubescens Western bracken fern Fern  
Selaginella densa Lesser spikemoss Fern (mosslike)  
Selaginella densa var. scopulorum Rocky mountain spike moss Fern (mosslike)  
Selaginella wallacei Wallace's spike moss Fern (mosslike)  
Thelypteris nevadensis Sierra marsh fern Fern  
Woodsia oregana Cliff fern Fern  
Woodsia scopulina Cliff fern Fern  
Woodwardia fimbriata Western chain fern Fern 31
  Lifeform: Shrub365 plants
  Lifeform: Tree74 plants
  Lifeform: Vine2 plants
 
Pink background indicates a plant is non-native.
! indicates a plant is potentially invasive.
NB: found in Siskiyou County is intended to indicate only plants found growing in the wild. However, the evidence is not always clear, and may occasionally include plants found in cultivation. To verify the wild presence of any particular plant in the list above, please click through to Calflora and look closely at the observations in this county.