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Rhinotropis
Rhinotropis rimulicola, Rhinotropis rusbyi, Rhinotropis subspinosa (S. F. Blake) J. R. Abbott J. Bot. Res. Inst. Texas 5: 134. 2011. J. Richard Abbott

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Loasaceae
Grissom and Hufford, unpubl.). In Loasaceae, Eucnide and Schismocarpus S. F. Blake, a genus restricted to southern Mexico, are the earliest diverging lineages

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Hymenoxys ambigens
Hymenoxys ambigens var. floribunda, Hymenoxys ambigens var. neomexicana (S. F. Blake) Bierner Sida 16: 6. 1994. Mark W. Bierner Common names: Pinaleno Mountains

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Heliomeris
sun, and - merus, part Synonyms: Viguiera sect. Heliomeris (Nuttall) S. F. Blake Treatment appears in FNA Volume 21. Treatment on page 169. Mentioned on

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Limonium carolinianum
Limonium carolinianum var. obtusilobum (S. F. Blake) H. E. Ahles Limonium carolinianum var. trichogonum (S. F. Blake) B. Boivin Limonium nashii Limonium nashii

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Chrysothamnus scopulorum
Synonyms: Haplopappus scopulorum (M. E. Jones) S. F. Blake Haplopappus scopulorum var. hirtellus S. F. Blake Hesperodoria scopulorum Treatment appears in

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Ericameria gilmanii
tribeAsteraceae tribe Astereae genusEricameria speciesEricameria gilmanii (S. F. Blake) G. L. Nesom Phytologia 68: 153. 1990. Lowell E. Urbatsch, Loran C. Anderson

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Chrysothamnus molestus
tribeAsteraceae tribe Astereae genusChrysothamnus speciesChrysothamnus molestus (S. F. Blake) L. C. Anderson Madroño 17: 222. 1964. Lowell E. Urbatsch, Roland P. Roberts

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Micranthemum umbrosum
speciesMicranthemum umbrosum (J. F. Gmelin) S. F. Blake Rhodora 17: 131. 1915. Brian R. Keener Common names: Shade mudflower baby's tears WeedyIllustrated Basionym:

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Heliomeris multiflora
Philadelphia, n. s. 1: 171. 1847. Edward E. Schilling Common names: Showy goldeneye Illustrated Synonyms: Viguiera multiflora (Nuttall) S. F. Blake Treatment

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Isocoma acradenia
10: 126. 1883 (as Bigelovia) Synonyms: Haplopappus acradenius (Greene) S. F. Blake Treatment appears in FNA Volume 20. Treatment on page 440. Herbage usually

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Blennosperma nanum
Blennosperma nanum var. nanum, Blennosperma nanum var. robustum (Hooker) S. F. Blake Proc. Biol. Soc. Wash. 39: 144. 1926. John L. Strother IllustratedEndemic

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Aphanostephus skirrhobasis var. kidderi
skirrhobasis var. kidderi (S. F. Blake) B. L. Turner Phytologia 56: 94. 1984. Guy L. Nesom Basionym: Aphanostephus kidderi S. F. Blake Contr. Gray Herb. 53:

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Coreopsis sect. Pugiopappus
Gray) S. F. Blake Proc. Amer. Acad. Arts 49: 340. 1913. John L. Strother Basionym: Undefined sect. Pugiopappus A. Gray in War Department [U.S.], Pacif

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Phoebanthus
genusPhoebanthus Show Lower Taxa Phoebanthus grandiflorus, Phoebanthus tenuifolius S. F. Blake Proc. Amer. Acad. Arts 51: 520. 1916. Edward E. Schilling Common names:

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Ericameria compacta
68. 1928 Synonyms: Haplopappus bloomeri var. compactus (H. M. Hall) S. F. Blake Haplopappus compactus Treatment appears in FNA Volume 20. Treatment on

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Ericameria brachylepis
California 1: 614. 1876 (as Bigelovia) Synonyms: Haplopappus propinquus S. F. Blake Treatment appears in FNA Volume 20. Treatment on page 55. Mentioned on

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Acamptopappus sphaerocephalus var. hirtellus
sphaerocephalus varietyAcamptopappus sphaerocephalus var. hirtellus S. F. Blake J. Wash. Acad. Sci. 19: 270. 1929. Guy L. Nesom Endemic Treatment appears

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Armeria maritima subsp. sibirica
Wallroth Armeria labradorica Wallroth Armeria labradorica var. submutica (S. F. Blake) H. F. Lewis Armeria maritima subsp. arctica (Chamisso) Hultén Armeria maritima

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Ageratina altissima var. altissima
rugosum Reichard Eupatorium rugosum var. chlorolepis (B. L. Robinson) S. F. Blake Eupatorium rugosum var. tomentellum Eupatorium urticifolium Treatment

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Eleocharis geniculata
Synonyms: Eleocharis capitata R. Brown Eleocharis caribaea (Rottbøll) S. F. Blake Eleocharis dispar E. J. Hill Treatment appears in FNA Volume 23. Treatment

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Ophioglossum pusillum
Florence S. Wagner Common names: Northern adder's-tongue herbe-sans-couture IllustratedEndemic Synonyms: Ophioglossum vulgatum var. pseudopodum (S.F. Blake)

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Amphiachyris dracunculoides
Genève 7: 265. 1836 Synonyms: Gutierrezia dracunculoides (de Candolle) S. F. Blake Xanthocephalum amoenum var. intermedium Shinners Treatment appears in

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Coreopsis sect. Tuckermannia
Tuckermannia Show Lower Taxa Coreopsis gigantea, Coreopsis maritima (Nuttall) S. F. Blake Proc. Amer. Acad. Arts 49: 340. 1913. John L. Strother Basionym: Undefined

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Tracyina
tribeAsteraceae tribe Astereae genusTracyina Show Lower Taxa Tracyina rostrata S. F. Blake Madroño 4: 74, fig. 1. 1937. John L. Strother Etymology: For Joseph Prince

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Erigeron uncialis
Taxa Erigeron uncialis var. conjugans, Erigeron uncialis var. uncialis S. F. Blake Proc. Biol. Soc. Wash. 47: 173. 1934. Guy L. Nesom Common names: Lone

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Jamesianthus
Chaenactidinae genusJamesianthus Show Lower Taxa Jamesianthus alabamensis S. F. Blake & Sherff Publ. Field Mus. Nat. Hist., Bot. Ser. 22: 399. 1940. John L

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Asemeia grandiflora
Carol., 179. 1788 Synonyms: Asemeia cumulicola (Small) Small A. leiodes (S. F. Blake) Small A. miamiensis (Small) Small P. corallicola Small P. cumulicola Small

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Polygonum achoreum
speciesPolygonum achoreum S. F. Blake Rhodora 19: 232. 1917. Mihai Costea, François J. Tardif, Harold R. Hinds† Common names: Blake’s knotweed renouée coriace

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Ericameria parishii
arborescens subsp. parishii (Greene) Moran Haplopappus parishii (Greene) S. F. Blake Treatment appears in FNA Volume 20. Treatment on page 71. Mentioned on

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Agalinis auriculata
genusAgalinis speciesAgalinis auriculata (Michaux) S. F. Blake Rhodora 20: 71. 1918. Judith M. Canne-Hilliker†, John F. Hays Common names: Earleaf false foxglove

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Agalinis densiflora
genusAgalinis speciesAgalinis densiflora (Bentham) S. F. Blake Rhodora 20: 71. 1918. Judith M. Canne-Hilliker†, John F. Hays Common names: Osage false foxglove Endemic

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Echinacea laevigata
Ecliptinae genusEchinacea speciesEchinacea laevigata (C. L. Boynton & Beadle) S. F. Blake J. Wash. Acad. Sci. 19: 273. 1929. Lowell E. Urbatsch, Kurt M. Neubig

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Hypericum denticulatum
St. John’s wort EndemicIllustrated Synonyms: Hypericum angulosum Michaux ex Willdenow H. denticulatum var. ovalifolium (Britton) S. F. Blake H. laevigatum Lamarck

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Heliomeris longifolia
29: 92. 1899 Synonyms: Viguiera longifolia (B. L. Robinson & Greenman) S. F. Blake Treatment appears in FNA Volume 21. Treatment on page 171. Mentioned on

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Pyrrocoma clementis
Tranquil goldenweed Endemic Synonyms: Haplopappus clementis (Rydberg) S. F. Blake Treatment appears in FNA Volume 20. Treatment on page 416. Mentioned on

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Symphyotrichum concolor var. devestitum
speciesSymphyotrichum concolor varietySymphyotrichum concolor var. devestitum (S. F. Blake) Semple Sida 21: 762. 2004. Luc Brouillet, John C. Semple, Geraldine A

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Chimaphila umbellata subsp. umbellata
occidentalis Rydberg Chimaphila umbellata subsp. acuta (S. F. Blake) Hultén Chimaphila umbellata var. acuta (Rydberg) S. F. Blake Chimaphila umbellata subsp. cisatlantica (Rydberg)

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Hebecarpa barbeyana
plate 13, figs. 15–18. 1893 Synonyms: P. longa S. F. Blake P. racemosa S. F. Blake P. reducta S. F. Blake Treatment appears in FNA Volume 10. Herbs, sometimes

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Polygonum fowleri subsp. fowleri
R. Hinds† Common names: Fowler’s knotweed renouée de Fowler IllustratedEndemic Synonyms: Polygonum allocarpum S. F. Blake Treatment appears in FNA Volume

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Baccharis thesioides
Bogler Common names: Arizona baccharis Synonyms: Baccharis alamosana S. F. Blake Treatment appears in FNA Volume 20. Treatment on page 34. Mentioned on

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Rudbeckia fulgida var. deamii
varietyRudbeckia fulgida var. deamii (S. F. Blake) Perdue Rhodora 59: 297. 1958. Lowell E. Urbatsch, Patricia B. Cox Common names: Deam’s coneflower Endemic Basionym:

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Hazardia brickellioides
tribeAsteraceae tribe Astereae genusHazardia speciesHazardia brickellioides (S. F. Blake) W. D. Clark Madroño 26: 125. 1979. W. Dennis Clark Common names: Brickellbush

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Agalinis tenuifolia
leucanthera (Rafinesque) Pennell A. tenuifolia var. macrophylla (Bentham) S. F. Blake A. tenuifolia var. parviflora (Nuttall) Pennell A. tenuifolia var. polyphylla (Small)

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Hebecarpa obscura
obscura Bentham Pl. Hartw., 58. 1840 Synonyms: P. orthotricha S. F. Blake P. piliophora S. F. Blake Treatment appears in FNA Volume 10. Herbs or subshrubs, (0

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Herrickia glauca
glaucus (Nuttall) Torrey & A. Gray Aster glaucodes S. F. Blake Eurybia glauca (Nuttall) G. L. Nesom Treatment appears in FNA Volume 20. Treatment on page

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Stephanomeria pauciflora
1827 Synonyms: Stephanomeria cinerea (S. F. Blake) S. F. Blake Stephanomeria lygodesmoides M. E. Jones ex L. F. Henderson Stephanomeria pauciflora var

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Hebecarpa rectipilis
LAYOUT:treatment:TUOYAL familyPolygalaceae genusHebecarpa speciesHebecarpa rectipilis (S. F. Blake) J. R. Abbott J. Bot. Res. Inst. Texas 5: 134. 2011. J. Richard Abbott

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Moneses uniflora
reticulata (Nuttall) Calder & Roy L. Taylor Moneses uniflora var. reticulata (Nuttall) S. F. Blake Treatment appears in FNA Volume 8. Treatment on page 384. Illustrator:

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Dieteria asteroides var. asteroides
Morgan Synonyms: Aster canescens var. tephrodes Aster tephrodes (A. Gray) S. F. Blake Machaeranthera tephrodes (A. Gray) Greene Treatment appears in FNA Volume

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Eucephalus ledophyllus var. covillei
covillei Greene Pittonia 3: 162. 1897 Synonyms: Aster covillei (Greene) S. F. Blake ex M. Peck Aster ledophyllus var. covillei (Greene) Cronquist Treatment

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Heterotheca jonesii
speciesHeterotheca jonesii (S. F. Blake) S. L. Welsh & N. D. Atwood Great Basin Naturalist 35: 336. 1976. John C. Semple Common names: Jones’s goldenaster EndemicConservation

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Encelia farinosa
Brittlebush incienso Illustrated Synonyms: Encelia farinosa var. phenicodonta S. F. Blake) I. M. Johnston Treatment appears in FNA Volume 21. Treatment on page

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Chimaphila umbellata
domingensis (S. F. Blake) Dorr in Hispaniola, subsp. mexicana (de Candolle) Hultén in Mexico, and subsp. umbellata in Eurasia. S. F. Blake (1917), in discussing

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Symphyotrichum ciliatum
Synonyms: Aster angustus (Lindley) Torrey & A. Gray Aster brachyactis S. F. Blake Brachyactis angusta (Lindley) Britton Brachyactis ciliata subsp. angusta (Lindley)

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Krigia biflora
tribeAsteraceae tribe Cichorieae genusKrigia speciesKrigia biflora (Walter) S. F. Blake Rhodora 17: 135. 1915. Kenton L. Chambers, Robert J. O’Kennon Common names:

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Seymeria cassioides
familyOrobanchaceae genusSeymeria speciesSeymeria cassioides (J. F. Gmelin) S. F. Blake Rhodora 17: 134. 1915. Christopher P. Randle Common names: Yaupon

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Microseris douglasii subsp. tenella
Gray) Schultz-Bipontinus Microseris tenella var. aphantocarpha (A. Gray) S. F. Blake Treatment appears in FNA Volume 19. Treatment on page 344. Mentioned on

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Smilax glauca
sarsaparilla sawbrier Endemic Synonyms: Smilax glauca var. leurophylla S. F. Blake Smilax spinulosa Treatment appears in FNA Volume 26. Treatment on page

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Encelia virginensis
Clark Endemic Synonyms: Encelia frutescens var. virginensis (A. Nelson) S. F. Blake Treatment appears in FNA Volume 21. Treatment on page 121. Mentioned on

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Machaeranthera tagetina
Hartman Common names: Mesa tansyaster Synonyms: Aster tagetinus (Greene) S. F. Blake Machaeranthera humilis (A. Gray) Standley Machaeranthera tanacetifolia

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Antennaria soliceps
tribeAsteraceae tribe Gnaphalieae genusAntennaria speciesAntennaria soliceps S. F. Blake Proc. Biol. Soc. Wash. 51: 7. 1938. Randall J. Bayer Common names: Charleston

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Hazardia cana
Amer. Acad. Arts 11: 75. 1876 Synonyms: Haplopappus canus (A. Gray) S. F. Blake Treatment appears in FNA Volume 20. Treatment on page 449. Mentioned on

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Grindelia oölepis
tribeAsteraceae tribe Astereae genusGrindelia speciesGrindelia oölepis S. F. Blake Proc. Biol. Soc. Wash. 41: 139. 1928. John L. Strother, Mark A. Wetter

3 KB (233 words) - 21:07, 5 November 2020
Encelia resinifera
Clark Endemic Basionym: Encelia frutescens var. resinosa M. E. Jones ex S. F. Blake Proc. Amer. Acad. Arts 49: 364. 1913, Synonyms: Encelia resinifera subsp

3 KB (216 words) - 21:11, 5 November 2020
Tithonia rotundifolia
subtribe Helianthinae genusTithonia speciesTithonia rotundifolia (Miller) S. F. Blake Contr. Gray Herb. 52: 41. 1917. John C. La Duke Introduced Basionym: Tagetes

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Helianthus anomalus
Heliantheae) subtribe Helianthinae genusHelianthus speciesHelianthus anomalus S. F. Blake J. Wash. Acad. Sci. 21: 333. 1931. Edward E. Schilling Common names: Anomalous

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Geraea viscida
Heliantheae) subtribe Ecliptinae genusGeraea speciesGeraea viscida (A. Gray) S. F. Blake Proc. Amer. Acad. Arts 49: 357. 1913. Curtis Clark Common names: Sticky

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Eucephalus glaucescens
1(2): 200. 1884 (as engelmanni) Synonyms: Aster glaucescens (A. Gray) S. F. Blake Aster glaucophyllus (Piper) Frye & Rigg Aster serrulatus (Greene) Frye

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Eucephalus gormanii
1916. Geraldine A. Allen Common names: Gorman’s aster Endemic Synonyms: Aster gormanii (Piper) S. F. Blake Treatment appears in FNA Volume 20. Treatment

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Helenium arizonicum
Heliantheae) subtribe Gaillardiinae genusHelenium speciesHelenium arizonicum S. F. Blake J. Wash. Acad. Sci. 27: 388. 1937. Mark W. Bierner Common names: Arizona

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Eucephalus vialis
Wayside aster EndemicConservation concern Synonyms: Aster vialis (Bradshaw) S. F. Blake Treatment appears in FNA Volume 20. Treatment on page 42. Mentioned on

3 KB (209 words) - 21:04, 5 November 2020
Rudbeckia glaucescens
names: Waxy coneflower Endemic Synonyms: Rudbeckia californica var. glauca S. F. Blake Treatment appears in FNA Volume 21. Treatment on page 48. Mentioned on

3 KB (255 words) - 21:15, 5 November 2020
Enceliopsis covillei
subtribe Ecliptinae genusEnceliopsis speciesEnceliopsis covillei (A. Nelson) S. F. Blake J. Wash. Acad. Sci. 21: 334. 1931. Curtis Clark Common names: Panamint

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Encelia actoni
1905. Curtis Clark Synonyms: Encelia frutescens var. actoni (Elmer) S. F. Blake Encelia virginensis subsp. actoni (Elmer) D. D. Keck Treatment appears

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Borrichia ×cubana
subtribe Ecliptinae genusBorrichia speciesBorrichia ×cubana Britton & S. F. Blake Mem. Torrey Bot. Club 16: 116. 1920. John C. Semple Treatment appears

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Geraea canescens
old Illustrated Synonyms: Geraea canescens var. paniculata (A. Gray) S. F. Blake Treatment appears in FNA Volume 21. Treatment on page 122. Mentioned on

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Symphyotrichum ericoides var. pansum
pansus S. F. Blake Rhodora 30: 227. 1928 Synonyms: Aster ericoides subsp. pansus (S. F. Blake) A. G. Jones Aster ericoides var. pansus (S. F. Blake) B. Boivin

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Herrickia glauca var. pulchra
wasatchensis var. pulcher (S. F. Blake) S. L. Welsh Eurybia pulchra (S. F. Blake) G. L. Nesom Eurybia glauca var. pulchra (S. F. Blake) Brouillet Treatment appears

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Gundlachia triantha
trianthus S. F. Blake J. Wash. Acad. Sci. 28: 485. 1938 Synonyms: Ericameria triantha (S. F. Blake) Shinners Xylothamia triantha (S. F. Blake) G. L. Nesom

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Dioscorea villosa
glabrifolia (Bartlett) W. Stone Dioscorea villosa var. glabrifolia (Bartlett) S. F. Blake Dioscorea villosa subsp. glauca (Muhlenberg ex Bartlett) R. Knuth Dioscorea

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Ericameria nauseosa var. psilocarpa
nauseosus var. psilocarpus S. F. Blake J. Wash. Acad. Sci. 27: 376. 1937 Synonyms: Chrysothamnus nauseosus subsp. psilocarpus (S. F. Blake) L. C. Anderson Treatment

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Liatris ohlingerae
Basionym: Lacinaria ohlingerae S. F. Blake Bull. Torrey Bot. Club 50: 203, plate 9. 1923 Synonyms: Ammopursus ohlingerae (S. F. Blake) Small Treatment appears

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Malacothrix floccifera
genusMalacothrix speciesMalacothrix floccifera (de Candolle) S. F. Blake Contr. U.S. Natl. Herb. 22: 656. 1924. W. S. Davis Common names: Woolly desertdandelion Endemic

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Erigeron peregrinus var. thompsonii
thompsonii (S. F. Blake ex J. W. Thompson) Cronquist Brittonia 6: 144. 1947. Guy L. Nesom EndemicConservation concern Basionym: Erigeron thompsonii S. F. Blake

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Erigeron uncialis var. conjugans
genusErigeron speciesErigeron uncialis varietyErigeron uncialis var. conjugans S. F. Blake Proc. Biol. Soc. Wash. 47: 174. 1934. Guy L. Nesom IllustratedEndemicConservation

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Xanthisma viscidum
Standley Contr. U.S. Natl. Herb. 16: 180. 1913 Synonyms: Haplopappus havardii Waterfall Haplopappus viscidus (Wooton & Standley) S. F. Blake Machaeranthera

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Bidens bidentoides
bidentoides Nuttall Trans. Amer. Philos. Soc., n. s. 7: 361. 1841 Synonyms: Bidens bidentoides var. mariana (S. F. Blake) Sherff Bidens mariana Treatment appears

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Corethrogyne filaginifolia
Corethrogyne californica de Candolle Corethrogyne californica var. lyonii S. F. Blake Corethrogyne californica var. obovata (Bentham) Kuntze Corethrogyne filaginifolia

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Ambrosia psilostachya
poux vivace Synonyms: Ambrosia psilostachya var. californica (Rydberg) S. F. Blake Ambrosia psilostachya var. coronopifolia (Torrey & A. Gray) Farwell Ambrosia

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Galinsoga quadriradiata
caracasana (de Candolle) Schultz-Bipontinus Galinsoga ciliata (Rafinesque) S. F. Blake Treatment appears in FNA Volume 21. Treatment on page 182. Mentioned on

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Helenium virginicum
Heliantheae) subtribe Gaillardiinae genusHelenium speciesHelenium virginicum S. F. Blake Claytonia 3: 13. 1936. Mark W. Bierner Common names: Virginia sneezeweed

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Cochlearia tridactylites
Ihsan A. Al-Shehbaz, Marcus Koch Endemic Synonyms: Cochlearia cyclocarpa S. F. Blake Treatment appears in FNA Volume 7. Treatment on page 516. Mentioned on

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Bidens polylepis
Heliantheae) subtribe Coreopsidinae genusBidens speciesBidens polylepis S. F. Blake Proc. Biol. Soc. Wash. 35: 78. 1922. John L. Strother, Ronald R. Weedon

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Polygala crenata
names: Scalloped milkwort Basionym: Polygala polygama Walter forma obovata S. F. Blake Rhodora 17: 201. 1915 Treatment appears in FNA Volume 10. Herbs short-lived

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Limonium californicum
Prodr. 12: 643. 1848 Synonyms: Limonium californicum var. mexicanum (S. F. Blake) Munz Limonium commune var. californicum (Boissier) Greene Limonium mexicanum

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Hymenoxys subintegra
names: Arizona rubberweed Endemic Synonyms: Actinea subintegra (Cockerell) S. F. Blake Treatment appears in FNA Volume 21. Treatment on page 441. Mentioned on

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Heterotheca fulcrata var. fulcrata
resinolens var. ciliata Chrysopsis viscida subsp. ciliata (A. Nelson) S. F. Blake Treatment appears in FNA Volume 20. Treatment on page 243. Mentioned on

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Smallanthus uvedalia
densipilis S. F. Blake Polymnia uvedalia var. floridana S. F. Blake Treatment appears in FNA Volume 21. Treatment on page 34. Illustrator: Bee F. Gunn Copyright:

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Cirsium eatonii var. clokeyi
genusCirsium speciesCirsium eatonii varietyCirsium eatonii var. clokeyi (S. F. Blake) D. J. Keil Sida 21: 212. 2004. David J. Keil Common names: Clokey or

3 KB (240 words) - 20:48, 5 November 2020