of Epilobium); ovular vascular system exclusively transseptal (R. H. Eyde 1981); ovule archesporium multicellular (H. Tobe and P. H. Raven 1996); and change
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tridentata, Artemisia tripartita (Rydberg) McArthur Amer. J. Bot. 68: 590. 1981. Leila M. Shultz Basionym: Tridentatae Rydberg in N. L. Britton et al., N
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Saueranthus (Linnaeus) Aellen ex K. R. Robertson J. Arnold Arbor. 62: 283. 1981. Sergei L. Mosyakin, Kenneth R. Robertson Basionym: Undefined subg. Acnida Linnaeus
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double ovule vascular supply, uniquely including a central supply (R. H. Eyde 1981), single-celled ovule archesporium (H. Tobe and P. H. Raven 1996), and a
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12–22 orbiculate to spatulate scales. North America, Mexico. H. Robinson (1981) suggested that Hymenopappinae is related to Gaillardiinae and other "core"
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America and an annotated key to the taxa. Phytologia 44: 177–214. Zander, R. H. 1981. Descriptions and illustrations of Barbula, Pseudocrossidium and Bryoerythrophyllum
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Engler and K. Prantl (1887–1915) and by R. K. F. Pilger (1925). A. Cronquist (1981) placed Cochlospermum and Amoreuxia in Bixaceae in the Violales, suggesting
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based on more or less regional studies (H. K. Svenson 1957; T. V. Egorova 1981; I. Kukkonen 1990). A study using limited DNA data from 30 species (E. H
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crassifolium are Malephora crocea (Jacquin) Schwantes (W. R. Ferren Jr. et al. 1981). Disphyma crassifolium has clavate leaves, long, terete peduncles, densely
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Helenieae (epaleate genera), as Bahiinae and Gaillardiinae. H. Robinson (1981) listed 35 subtribes for Heliantheae, including transfers of all of traditional
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with 11 new combinations in Minuartia. Rhodora 82: 495–502. Wofford, B. E. 1981. External seed morphology of Arenaria (Caryophyllaceae) of the southeastern
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Myoporaceae (three or four genera and 125 species, in the sense of A. Cronquist 1981) is warranted based on its close similarity to Leucophylleae. Morphological
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species ca. 160 (53 in the flora). Some genera included by A. Cronquist (1981) in Grossulariaceae are now placed in separate families. Of the genera native
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(Petiveria, Rivina, Trichostigma), and Agdestidaceae (Agdestis). A. Cronquist (1981) wrote that “each of the several segregate families … appears to be a natural
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Botrychium speciesBotrychium paradoxum W. H. Wagner Amer. Fern J. 71: 24. 1981. Warren H. Wagner Jr., Florence S. Wagner Common names: Paradox moonwort
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familyIsoëtaceae genusIsoëtes speciesIsoëtes acadiensis Kott Canad. J. Bot. 59: 2592. 1981. W. Carl Taylor, Neil T. Luebke, Donald M. Britton, R. James Hickey, Daniel
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here in Heterotheca and all species treated here in Pityopsis (J. C. Semple 1981, 1996, literature cited therein). The two annual species of Bradburia are
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holoparasitic members traditionally included in the family (A. Cronquist 1981) and the hemiparasitic genera formerly included in Scrophulariaceae. Although
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the family occur outside of the flora area (H. Akiyama 1990; M. G. Manuel 1981). Other genera of the flora area (for example, Alsia, Forsstroemia) have
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appears to be relatively isolated among epaleate Heliantheae (H. Robinson 1981). B. G. Baldwin et al. (2002) included Lycapsus Philippi in Peritylinae.
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