(Scrophulariaceae). Madroño 33: 63–70. Newsom, V. M. 1929. A revision of the genus Collinsia (Scrophulariaceae). Bot. Gaz. 87: 260–301. Tunbridge, N. D., C. Sears, and
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Argentina. Goodman, G. J. 1934. A revision of the North American species of the genus Chorizanthe. Ann. Missouri Bot. Gard. 21: 1–102. Reveal, J. L. and
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Asteraceae). Amer. J. Bot. 81: 1139–1148. Stuessy, T. F. 1976. A systematic review of the subtribe Lagasceinae (Compositae, Heliantheae). Amer. J. Bot. 63: 1289–1294
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North America: A revision. Sida 15: 323–342. Wen, J. and T. F. Stuessy. 1993. The phylogeny and biogeography of Nyssa (Cornaceae). Syst. Bot. 18: 68–79. Nyssa
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Ctenidium molluscum, Ctenidium schofieldii (Schimper) Mitten J. Linn. Soc., Bot. 12: 509. 1869. Richard H. Zander Etymology: Greek ktenos, comb, and -idium
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Taxa Isopterygium tenerifolium, Isopterygium tenerum Mitten J. Linn. Soc., Bot. 12: 21, 497. 1869. Robert R. Ireland Jr. Etymology: Greek isos, equal, and
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Lower Taxa Pterocaulon pycnostachyum, Pterocaulon virgatum Elliott Sketch Bot. S. Carolina 2: 323. 1823. Guy L. Nesom Etymology: Greek pteron, wing, and
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Pityopsis (Compositae–Astereae). Canad. J. Bot. 58: 164–171. Semple, J. C. and F. D. Bowers. 1985. A revision of the goldenaster genus Pityopsis Nuttall
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(Scrophulariaceae-Rhinanthoideae). Opera Bot. 102: 5–99. Uribe-Convers, S. and D. C. Tank. 2016. Phylogenetic revision of the genus Bartsia (Orobanchaceae):
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Nelson, New Man. Bot. Rocky Mt., 255. 1909. Reidar Elven, David F. Murray, Barbara Ertter Basionym: Niveae Rydberg Bull. Torrey Bot. Club 23: 301. 1896
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and nuclear sequences. Amer. J. Bot. 98: 896–908. Rodrigues, A. G. et al. 2013. Morphometric analysis and taxonomic revision of the North American holoparasitic
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Smith, E. B. 1989. A biosystematic study and revision of the genus Coreocarpus (Compositae). Syst. Bot. 14: 448–472. Coreocarpus arizonicus "broader"
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Bruggen, H. W. E. van. 1973. Revision of the genus Aponogeton (Aponogetonaceae): VI. The species of Africa. Bull. Jard. Bot. Natl. Belg. 43: 1--2, 193--233
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North America, 3 in e Asia Species 5 (2 in the flora). Flous, F. 1937. Révision du genre Pseudotsuga. Bull. Soc. Hist. Nat. Toulouse 71: 33--164. Little
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classification of the grasses (Poaceae). Ann. Missouri Bot. Gard. 88:373-457 Yates, H.O. 1966. Revision of grasses traditionally referred to Uniola, II. Chasmanthium
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odorata. Bull. Torrey Bot. Club 87:95-98 Pizzolato, T.D. 1984. Vascular system of the fertile floret of Anthoxanthum odoratum L. Bot. Gaz. 145:358-371 Schouten
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Vol. 4, pp. 220–232. Kazmi, S. M. A. 1964. Revision der Gattung Carduus (Compositae). Teil II. Mitt. Bot. Staatssaml. München 5: 279–550. Carduus acanthoides
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character (D. J. Rogers 1951). Rogers, D. J. 1951. A revision of Stillingia in the New World. Ann. Missouri Bot. Gard. 38: 207–259. Stillingia aquatica, Stillingia
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genusIndusiella Show Lower Taxa Indusiella thianschanica Brotherus & Müller Hal. Bot. Centralbl. 75: 322. 1898 ,. Patricia M. Eckel Etymology: Latin indusium,
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Cardamineae genusPlanodes Show Lower Taxa Planodes virginicum Greene Leafl. Bot. Observ. Crit. 2: 220. 1912. Ihsan A. Al-Shehbaz Etymology: Greek planis,
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