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s Sp. Pl. 2: 1068. 1753 Synonyms: Marginaria polypodioides (Linnaeus) Tidestrom Polypodium polypodioides (Linnaeus) Watt Treatment appears in FNA Volume

tribeRosaceae tribe Gillenieae genusAmelanchier speciesAmelanchier nitens Tidestrom Proc. Biol. Soc. Wash. 36: 182. 1923. Christopher S. Campbell, Michael

spicata Walter Fl. Carol., 222. 1788 Synonyms: Corallorhiza spicata (Walter) Tidestrom Treatment appears in FNA Volume 26. Treatment on page 604. Mentioned on

aromatic shrub possibly from myrizein, to perfume Synonyms: Cerothamnus Tidestrom Gale Duhamel Morella Loureiro Treatment appears in FNA Volume 3. Shrubs

1916. Ivonne Sánchez del Pino, Steven E. Clemants Etymology: For Ivar T. Tidestrom, 1864–1956, Swedish-born American botanist noted for floras of central

chaetocalyx var. chaetocalyx, Euphorbia chaetocalyx var. triligulata (Boissier) Tidestrom Proc. Biol. Soc. Wash. 48: 40. 1935. Victor W. Steinmann, Jeffery J. Morawetz

blazingstar IllustratedEndemic Synonyms: Mentzelia acuminata (Rydberg) Tidestrom Treatment appears in FNA Volume 12. Treatment on page 514. Illustrator:

Claytonia rubra subsp. depressa, Claytonia rubra subsp. rubra (Howell) Tidestrom Contr. U.S. Natl. Herb. 25: 188. 1925. John M. Miller Common names: Erubescent

watsonii (Tidestrom) B. Boivin Dodecatheon pulchellum subsp. pauciflorum (Greene) Hultén Dodecatheon pulchellum subsp. watsonii (Tidestrom) H. J. Thompson

Anleit. Kenntn. Gew. 3: 112. 1804 Synonyms: Athyrium pycnocarpon (Sprengel) Tidestrom Homalosorus pycnocarpos (Sprengel) Pichi-Sermolli Treatment appears in

quaking aspen tremble álamo temblón WeedyIllustrated Synonyms: Populus aurea Tidestrom Populus ×polygonifolia F. G. Bernard Populus tremula subsp. tremuloides (Michaux)

pinetorum (Tidestrom) Payson ex Kearney & Peebles Fl. Pl. Ferns Ariz., 318. 1942. Alan T. Whittemore Endemic Basionym: Aquilegia pinetorum Tidestrom Amer. Midl

Whittemore EndemicIllustrated Synonyms: Aquilegia flavescens var. rubicunda (Tidestrom) S. L. Welsh Aquilegia micrantha var. mancosana Eastwood Treatment appears

Cerophora lanceolata Rafinesque Cerothamnus arborescens (Castiglioni) Tidestrom Cerothamnus ceriferus (Linnaeus) Small Cerothamnus pumilus (Michaux) Small

Contr. Gray Herb. 65: 39. 1922 Synonyms: Cleome jonesii (J. F. Macbride) Tidestrom Treatment appears in FNA Volume 7. Treatment on page 207. Mentioned on

2: 441. 1813 Synonyms: Cleome serrulata subsp. angusta (M. E. Jones) Tidestrom Peritoma inornata Peritoma serrulata var. albiflora Cockerell Peritoma

A. M. Ferguson C. longipes M. E. Jones C. mohavensis (A. M. Ferguson) Tidestrom C. tenuis S. Watson Treatment appears in FNA Volume 12. Treatment on page

sectionMentzelia sect. Bartonia speciesMentzelia integra (M. E. Jones) Tidestrom Contr. U.S. Natl. Herb. 25: 363. 1925. John J. Schenk, Larry Hufford Common

genusEuphorbia subgenusEuphorbia subg. Esula speciesEuphorbia yaquiana Tidestrom Proc. Biol. Soc. Wash. 48: 41. 1935. Ricarda Riina, Dmitry V. Geltman,

329. 1909. Leo A. Galloway Endemic Synonyms: Abronia wootonii (Standley) Tidestrom Tripterocalyx carneus var. wootonii (Standley) L. A. Galloway Treatment

U.S. Mex. Bound. 2(1): 118. 1859 Synonyms: Agalinis wrightii (A. Gray) Tidestrom Dasistoma wrightii (A. Gray) Wooton & Standley Treatment appears in FNA

Dipterostemon pauciflorus (Torrey) Rydberg Hookera pauciflora (Torrey) Tidestrom Milla capitata var. pauciflora (Torrey) Baker Treatment appears in FNA

LAYOUT:treatment:TUOYAL familyRanunculaceae genusAquilegia speciesAquilegia scopulorum Tidestrom Amer. Midl. Naturalist 1: 167, plate 11. 1910. Alan T. Whittemore EndemicIllustrated

var. pinetorum (Tidestrom) B. Boivin Arabis holboellii var. pinetorum (Tidestrom) Rollins Boechera holboellii var. pinetorum (Tidestrom) Dorn Treatment

Basionym: Eriogonum eximium Tidestrom Proc. Biol. Soc. Wash. 36: 181. 1923 Synonyms: Eriogonum ovalifolium subsp. eximium (Tidestrom) S. Stokes Treatment appears

1852 Synonyms: Hesperis diffusa (A. Gray) Kuntze Sophia diffusa (A. Gray) Tidestrom Treatment appears in FNA Volume 7. Treatment on page 558. Perennials. Stems

familyCyperaceae genusCladium speciesCladium californicum (S. Watson) O’Neill in I. Tidestrom and T. Kittell, Fl. Ariz. New Mex., 773. 1941. Gordon C. Tucker Illustrated

Potentilla glandulosa subsp. arizonica (Rydberg) D. D. Keck P. macdougalii Tidestrom Treatment appears in FNA Volume 9. Treatment on page 284. Mentioned on

Illustrated Synonyms: Petrophytum caespitosum var. elatius (S. Watson) Tidestrom P. elatius (S. Watson) A. Heller Spiraea caespitosa var. elatior S. Watson

tribe Senecioneae genusPackera speciesPackera malmstenii (S. F. Blake ex Tidestrom) Kartesz in J. T. Kartesz and C. A. Meacham, Synth. N. Amer. Fl., nomencl

Allium cusickii S. Watson Allium douglasii var. tolmiei (Tidestrom) Ownbey Allium idahoense Tidestrom Allium platyphyllum S. Watson Allium pleianthum Allium

speciesSarcocornia utahensis (Tidestrom) A. J. Scott Bot. J. Linn Soc. 75: 369. 1978. Peter W. Ball Illustrated Basionym: Salicornia utahensis Tidestrom Proc. Biol. Soc

sectionMentzelia sect. Bartonia speciesMentzelia springeri (Standley) Tidestrom in I. Tidestrom and M. T. Kittell, Fl. Ariz. New Mex., 288. 1941. John J. Schenk

genusEriogonum subgenusEriogonum subg. Ganysma speciesEriogonum rubricaule Tidestrom Proc. Biol. Soc. Wash. 36: 181. 1923. James L. Reveal Common names: Lahontan

nevadensis (Tidestrom) Windham & Al-Shehbaz Harvard Pap. Bot. 11: 73. 2006. Ihsan A. Al-Shehbaz, Michael D. Windham Basionym: Arabis nevadensis Tidestrom Proc

bayberry myrtle wax-myrtle Endemic Synonyms: Cerothamnus carolinensis (Miller) Tidestrom Myrica cerifera var. augustifolia C. de Candolle Myrica cerifera var. latifolia Aiton

sectionEuphorbia sect. Anisophyllum speciesEuphorbia indivisa (Engelmann) Tidestrom Proc. Biol. Soc. Wash. 48: 40. 1935. Victor W. Steinmann, Jeffery J. Morawetz

buckwheat Endemic Synonyms: Eriogonum dudleyanum S. Stokes Eriogonum kearneyi Tidestrom Eriogonum kearneyi var. monoense (S. Stokes) Reveal Eriogonum kearneyi

multijuga var. parviflora (S. Watson) Munz O. phlebophylla Tidestrom O. watsonii Tidestrom Treatment appears in FNA Volume 10. Herbs annual or biennial

Diedropetala subsectionDelphinium subsect. Exaltata speciesDelphinium sapellonis Tidestrom Bot. Gaz. 34: 453. 1902. Michael J. Warnock Common names: Sapello Canyon

Watson O. deltoides var. decumbens (S. Watson) Munz O. simplex (Small) Tidestrom Treatment appears in FNA Volume 10. Herbs annual, strigillose, especially

larkspur Clary's larkspur Mohave larkspur Synonyms: Delphinium amabile Tidestrom Delphinium amabile subsp. apachense Treatment appears in FNA Volume 3.

subsectionDelphinium subsect. Wislizenana speciesDelphinium stachydeum (A. Gray) Tidestrom Proc. Biol. Soc. Wash. 27: 61. 1914. Michael J. Warnock Common names: Umatilla

lampasana (Buckley) Wooton & Standley O. camporum (Wooton & Standley) Tidestrom O. greggii A. Gray O. greggii var. lampasana (Buckley) Munz O. interior (Small)

albicaulis var. xanthosperma H. Léveillé O. ctenophylla (Wooton & Standley) Tidestrom O. sinuata var. bicolor H. Léveillé Treatment appears in FNA Volume 10

subsectionOenothera subsect. Salpingia speciesOenothera toumeyi (Small) Tidestrom Proc. Biol. Soc. Wash. 48: 41. 1935. Warren L. Wagner Basionym: Galpinsia

Acad. Arts 23: 261. 1888 Synonyms: Cheirinia occidentalis (S. Watson) Tidestrom Treatment appears in FNA Volume 7. Treatment on page 543. Mentioned on

Eupatorieae genusLiatris speciesLiatris lancifolia (Greene) Kittell in I. Tidestrom and T. Kittell, Fl. Ariz. New Mex., 370. 1941. Guy L. Nesom Common names:

Shinners Galpinsia filifolia (Eastwood) A. Heller O. filifolia (Eastwood) Tidestrom O. hartwegii var. filifolia (Eastwood) Munz Treatment appears in FNA Volume

laeta var. altocaulis (Hultén) B. Boivin Stellaria laxmannii (Rydberg) Tidestrom Stellaria longifolia var. laeta (Richardson) S. Watson Stellaria longipes

IllustratedEndemic Synonyms: Eriogonum sphaerocephalum var. sericoleucum (Greene ex Tidestrom) S. Stokes Treatment appears in FNA Volume 5. Treatment on page 364. Mentioned

triloba (Nuttall) Spach L. watsonii Small Oenothera hamata (Wooton & Standley) Tidestrom O. rhizocarpa Sprengel O. roemeriana Scheele O. triloba var. parviflora S

amplexicaulis Wooton & Standley Oenothera amplexicaulis (Wooton & Standley) Tidestrom O. laciniata subsp. pubescens (Willdenow ex Sprengel) Munz Var. o. var

species Potentilla oblanceolata Rydberg, repeated in subsequent floras (I. Tidestrom and T. Kittell 1941; W. C. Martin and C. R. Hutchins 1980). No specimens

var. wrightii (A. Gray) Moldenke Oenothera australis (Wooton & Standley) Tidestrom O. brachycarpa var. wrightii (A. Gray) H. Léveillé O. cespitosa subsp.

inclusion of the genus in the Utah flora without reference to a collection (I. Tidestrom 1925). Didiplis is not confirmed as a past or present member of that flora

these plants, including D. elatum var. occidentale S. Watson, D. abietorum Tidestrom, and D. scopulorum subsp. occidentale (S. Watson) Abrams. Delphinium barbeyi

Contr. U.S. Natl. Herb. 20: 379. 1920. Craig C. Freeman Common names: Tidestrom’s beardtongue Endemic Synonyms: Penstemon leptanthus Pennell Treatment

Wooton (1865--1945) and Paul C. Standley (1884--1963). In 1925, Ivar Tidestrom (1864--1956) published his flora of Utah and Nevada. Most of these works