altissimum, Cirsium andersonii, Cirsium andrewsii, Cirsium arizonicum, Cirsium arvense, Cirsium barnebyi, Cirsium brevifolium, Cirsium brevistylum, Cirsium canescens
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Taxa Cerastium aleuticum, Cerastium alpinum, Cerastium arcticum, Cerastium arvense, Cerastium axillare, Cerastium beeringianum, Cerastium bialynickii, Cerastium
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genusEquisetum subgenusEquisetum subg. Hippochaete Show Lower Taxa Equisetum arvense, Equisetum fluviatile, Equisetum palustre, Equisetum pratense, Equisetum
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Equisetaceae Equisetum scirpoides Equisetum hyemale subsp. affine Equisetum arvense John Myers John Myers John Myers Equisetaceae Equisetaceae Equisetum subg
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15 (11 in the flora). Hauke, R.L. 1966. A systematic study of Equisetum arvense. Nova Hedwigia 13: 81--109. Hauke, R.L. 1979. Equisetum ramosissimum in
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Alsinoideae genusCerastium speciesCerastium arvense Show Lower Taxa Cerastium arvense subsp. arvense, Cerastium arvense subsp. strictum Linnaeus Sp. Pl. 1: 438
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familyEquisetaceae genusEquisetum subgenusEquisetum subg. Hippochaete speciesEquisetum arvense Linnaeus Sp. Pl. 2: 1061. 1753. Richard L. Hauke Common names: Field horsetail common
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tribe Thlaspideae genusThlaspi Show Lower Taxa Thlaspi alliaceum, Thlaspi arvense Linnaeus Sp. Pl. 2: 645. 1753. , Gen. Pl. ed. 5, 292. 1754. Ihsan A. Al-Shehbaz
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LAYOUT:treatment:TUOYAL familyChenopodiaceae genusPolycnemum Show Lower Taxa Polycnemum arvense, Polycnemum majus Linnaeus Sp. Pl. 1: 35. 1753. , Gen. Pl. ed. 5, 22. 1754
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macrochaeton Lolium temulentum var. leptochaeton Lolium temulentum var. arvense Lolium multiflorum var. ramosum (Guss.) Pari. Treatment appears in FNA Volume
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subfam. Alsinoideae genusCerastium speciesCerastium arvense subspeciesCerastium arvense subsp. arvense John K. Morton Treatment appears in FNA Volume 5.
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Synonyms: Cerastium arvense var. bracteatum (Torrey) Hollick & Britton Cerastium arvense var. oblongifolium (Rafinesque) Britton Cerastium arvense subsp. velutinum (Rafinesque)
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Cerastium arvense var. angustifolium Fenzl Cerastium arvense var. fuegianum Hooker f. Cerastium arvense var. latifolium Fenzl Cerastium arvense var. ophiticola Raymond
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mouse-ear chickweed Endemic Synonyms: Cerastium arvense subsp. maximum (Hollick & Britton) Ugborogho Cerastium arvense var. maximum Hollick & Britton Treatment
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J. Musselman and S. C. Haynes (1996) determined that they are either T. arvense or T. longifolium. A DNA sequence from the Montana population was identical
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pansy European field pansy violette des champs Introduced Synonyms: Mnemion arvense (Murray) Nieuwland & Kaczmarek Viola tricolor var. arvensis (Murray) de
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LAYOUT:treatment:TUOYAL familyChenopodiaceae genusPolycnemum speciesPolycnemum arvense Linnaeus Sp. Pl. 1: 35. 1753. Leila M. Shultz Common names: Soft needleleaf
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Synonyms: Anthemis arvensis var. agrestis (Wallroth) de Candolle Chamaemelum arvense Treatment appears in FNA Volume 19. Treatment on page 538. Illustrator:
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John K. Morton Common names: Octoraro Creek chickweed Basionym: Cerastium arvense var. villosissimum Pennell Bartonia 12: 11. 1931 Treatment appears in FNA
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arvensis (Linnaeus) Robson Cirsium arvense var. argenteum (Peyer ex Vest) Fiori Cirsium arvense var. horridum Wimmer & Grabowski Cirsium arvense var. integrifolium Wimmer
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familyBrassicaceae tribeBrassicaceae tribe Thlaspideae genusThlaspi speciesThlaspi arvense Linnaeus Sp. Pl. 2: 646. 1753. Ihsan A. Al-Shehbaz Common names: Fanweed field
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included in C. arvense as a variety or subspecies. However, morphological characters and chromosome number (diploid in the native forms of C. arvense, tetraploid
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Equisetaceae Equisetum scirpoides Equisetum hyemale subsp. affine Equisetum arvense John Myers John Myers John Myers Equisetaceae Equisetaceae Equisetum subg
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Cerastium tomentosum hybridizes readily with the introduced C. arvense subsp. arvense (J. K. Morton 1973). North American reports of Cerastium biebersteinii
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, Wash., W.Va., Wis., Wyo. Equisetum × litorale is a hybrid between E. arvense and E. fluviatile. It should be expected where the parents coexist. This
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documented most frequently parasitizing introduced clovers (mainly Trifolium arvense and T. repens), and collected rarely on Crotalaria (J. W. Thieret 1971)
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other species. The blunt sepals help to distinguish this species from C. arvense subsp. strictum, with which it is most likely to be confused. The epithet
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were named C. regelii var. hirsutum Hultén. An apparent hybrid with C. arvense subsp. strictum also has been collected along the Nisling River in the Yukon
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indicative of its invasiveness. Spontaneous hybrids between C. palustre and C. arvense have been reported from England and other European countries (W. A. Sledge
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