| Horkelia argyrocoma Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia arrhiza (L.) Druce |
Synonym |
 |
WCSP |
|
| Horkelia arrhiza Druce |
Unresolved |
 |
RJP |
|
| Horkelia baileyi (S.Watson) Rydb. |
Synonym |
 |
RJP |
|
| Horkelia beneolens A.Nelson & J.F.Macbr. |
Synonym |
 |
RJP |
|
| Horkelia bernardina Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia bolanderi A.Gray |
Unresolved |
 |
RJP |
|
| Horkelia bolanderi subsp. clevelandii (Greene) D.D.Keck |
Synonym |
 |
RJP |
|
| Horkelia bolanderi var. marinensis Elmer |
Unresolved |
 |
RJP |
|
| Horkelia bolanderi var. parryi S.Watson |
Unresolved |
 |
RJP |
|
| Horkelia bolanderi subsp. parryi (S.Watson) D.D.Keck |
Synonym |
 |
RJP |
|
| Horkelia brevibracteata Wiggins |
Synonym |
 |
RJP |
|
| Horkelia brownii Rydb. |
Synonym |
 |
RJP |
|
| Horkelia caeruleomontana H.St.John |
Unresolved |
 |
RJP |
|
| Horkelia californica W.H.Brewer & S.Watson |
Unresolved |
 |
RJP |
|
| Horkelia californica Brandegee |
Unresolved |
 |
RJP |
|
| Horkelia californica Cham. & Schltdl. |
Accepted |
 |
RJP |
|
| Horkelia californica subsp. californica |
Synonym |
 |
RJP |
|
| Horkelia californica subsp. dissita (Crum ex Jeps.) Ertter |
Accepted |
 |
RJP |
|
| Horkelia californica var. elata (Greene) Ertter & Reveal |
Accepted |
 |
RJP |
|
| Horkelia californica subsp. frondosa (Greene) Ertter |
Accepted |
 |
RJP |
|
| Horkelia californica var. sericea A.Gray |
Synonym |
 |
RJP |
|
| Horkelia campestris (M.E.Jones) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia capitata Torr. |
Unresolved |
 |
RJP |
|
| Horkelia capitata Regel |
Unresolved |
 |
RJP |
|
| Horkelia capitata Lindl. |
Synonym |
 |
RJP |
|
| Horkelia caruifolia Rydb. ex Howell |
Synonym |
 |
RJP |
|
| Horkelia chaetophora Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia chandleri Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia clevelandii (Greene) Rydb. |
Accepted |
 |
RJP |
|
| Horkelia clevelandii var. brevibracteata (Wiggins) Ertter & Reveal |
Accepted |
 |
RJP |
|
| Horkelia congdonis Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia congesta Newb. |
Unresolved |
 |
RJP |
|
| Horkelia congesta W.H.Brewer & S.Watson |
Unresolved |
 |
RJP |
|
| Horkelia congesta Torr. & A.Gray |
Unresolved |
 |
RJP |
|
| Horkelia congesta Douglas ex Hook. |
Accepted |
 |
RJP |
|
| Horkelia congesta var. congesta |
Synonym |
 |
TRO |
|
| Horkelia cuneata Newb. |
Unresolved |
 |
RJP |
|
| Horkelia cuneata Lindl. |
Unresolved |
 |
RJP |
|
| Horkelia cuneata var. puberula (Greene) Ertter & Reveal |
Unresolved |
 |
RJP |
|
| Horkelia cuneata subsp. sericea (A.Gray) D.D.Keck |
Unresolved |
 |
RJP |
|
| Horkelia cuneata var. sericea (A.Gray) Ertter & Reveal |
Unresolved |
 |
RJP |
|
| Horkelia daucifolia (Greene) Rydb. |
Accepted |
 |
RJP |
|
| Horkelia daucifolia var. caruifolia (Rydb. ex Howell) Ertter & Reveal |
Unresolved |
 |
RJP |
|
| Horkelia daucifolia subsp. daucifolia |
Synonym |
 |
RJP |
|
| Horkelia daucifolia var. indicta (Jeps.) Ertter & Reveal |
Accepted |
 |
RJP |
|
| Horkelia douglasiana Nutt. ex Torr. & A.Gray |
Unresolved |
 |
RJP |
|
| Horkelia douglasiana Nutt. ex Hook. & Arn. |
Unresolved |
 |
RJP |
|
| Horkelia elata (Greene) Rydb. |
Synonym |
 |
RJP |
|
| Horkelia eremica (Coville) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia flavescens Rydb. |
Synonym |
 |
RJP |
|
| Horkelia frondosa (Greene) Rydb. |
Synonym |
 |
RJP |
|
| Horkelia fusca Lindl. |
Accepted |
 |
RJP |
|
| Horkelia fusca var. brownii (Rydb.) Ertter & Reveal |
Accepted |
 |
RJP |
|
| Horkelia fusca subsp. capitata (Lindl.) D.D.Keck |
Accepted |
 |
RJP |
|
| Horkelia fusca var. capitata (Lindl.) M.Peck |
Synonym |
 |
RJP |
|
| Horkelia fusca subsp. filicoides (Crum) D.D.Keck |
Accepted |
 |
RJP |
|
| Horkelia fusca subsp. fusca |
Synonym |
 |
RJP |
|
| Horkelia fusca var. fusca |
Synonym |
 |
TRO |
|
| Horkelia fusca subsp. parviflora (Nutt. ex Hook. & Arn.) D.D.Keck |
Accepted |
 |
RJP |
|
| Horkelia fusca var. parviflora (Nutt. ex Hook. & Arn.) Wawra |
Synonym |
 |
RJP |
|
| Horkelia fusca subsp. pseudocapitata (Rydb. ex Howell) D.D.Keck |
Accepted |
 |
RJP |
|
| Horkelia fusca var. pseudocapitata (Rydb. ex Howell) Kartesz |
Synonym |
 |
RJP |
|
| Horkelia fusca var. tenella S.Watson |
Unresolved |
 |
RJP |
|
| Horkelia fusca subsp. tenella (S.Watson) D.D.Keck |
Accepted |
 |
RJP |
|
| Horkelia fusca var. tenuiloba Torr. |
Unresolved |
 |
RJP |
|
| Horkelia glandulosa Eastw. |
Synonym |
 |
RJP |
|
| Horkelia gordonii Hook. |
Synonym |
 |
RJP |
|
| Horkelia gordonii var. megalopetala Rydb. |
Synonym |
 |
RJP |
|
| Horkelia grandis Hook. & Arn. |
Synonym |
 |
RJP |
|
| Horkelia hendersonii Howell |
Unresolved |
 |
RJP |
|
| Horkelia hirsuta Lindl. |
Unresolved |
 |
RJP |
|
| Horkelia hispidula Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia howellii (Greene) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia integrifolia Alph.Wood ex Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia kelloggii Greene |
Unresolved |
 |
RJP |
|
| Horkelia kingii (S.Watson) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia laxiflora (Drew) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia lycopodioides (A.Gray) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia marinensis (Elmer) Crum ex D.D.Keck |
Unresolved |
 |
RJP |
|
| Horkelia marinensis (Elmer) Crum |
Accepted |
 |
TRO |
|
| Horkelia micheneri (Greene) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia mollis Eastw. |
Unresolved |
 |
RJP |
|
| Horkelia muirii (A.Gray) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia multifoliolata Torr. |
Synonym |
 |
RJP |
|
| Horkelia mutabilis Brandegee |
Unresolved |
 |
RJP |
|
| Horkelia myriophylla Greene |
Unresolved |
 |
RJP |
|
| Horkelia parryi (S.Watson) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia parryi Greene |
Unresolved |
 |
RJP |
|
| Horkelia parviflora Nutt. ex Hook. & Arn. |
Unresolved |
 |
RJP |
|
| Horkelia pickeringii (Torr. ex A.Gray) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia pilosa Nutt. ex Torr. & A.Gray |
Unresolved |
 |
RJP |
|
| Horkelia pinetorum (Coville) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia platycalyx Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia platypetala Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia pseudocapitata Rydb. ex Howell |
Unresolved |
 |
RJP |
|
| Horkelia puberula (Greene) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia pulchra Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia purpurascens S.Watson |
Synonym |
 |
RJP |
|
| Horkelia purpurascens subsp. congdonis (Rydb.) Abrams |
Synonym |
 |
RJP |
|
| Horkelia pygmaea (A.Gray) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia rydbergii Elmer |
Accepted |
 |
RJP |
|
| Horkelia sabulosa (M.E.Jones) L.O.Williams |
Unresolved |
 |
RJP |
|
| Horkelia saxosa (Lemmon & S.A.Lemmon ex Greene) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia scandularis Rydb. |
Synonym |
 |
RJP |
|
| Horkelia sericata S.Watson |
Accepted |
 |
RJP |
|
| Horkelia sericea (A.Gray) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia sericoleuca Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia shockleyi (S.Watson) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia tenella (S.Watson) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia tenuiloba (Torr.) A.Gray |
Unresolved |
 |
RJP |
|
| Horkelia tenuisecta Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia tilingii Regel |
Unresolved |
 |
RJP |
|
| Horkelia tridentata Torr. |
Accepted |
 |
RJP |
|
| Horkelia tridentata var. flavescens (Rydb.) Ertter & Reveal |
Accepted |
 |
RJP |
|
| Horkelia tridentata subsp. tridentata |
Synonym |
 |
RJP |
|
| Horkelia truncata Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia tularensis (J.T.Howell) Munz |
Unresolved |
 |
RJP |
|
| Horkelia tweedyi (Rydb.) A.Nelson & J.F.Macbr. |
Unresolved |
 |
RJP |
|
| Horkelia unguiculata (A.Gray) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia utahensis (S.Watson) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia webberi (A.Gray) Rydb. |
Unresolved |
 |
RJP |
|
| Horkelia wilderae Parish |
Unresolved |
 |
RJP |
|
| Horkelia yadonii Ertter |
Accepted |
 |
RJP |
|