Published in Journal of The Straits Branch of The Royal Asiatic Society, in 1912, in volume 62, pages 24-25

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Published in Madroño, in 1941, in volume 6, issue 1, pages 29-30

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Published in Madroño, in 1973, in volume 22, issue 2, pages 71-73

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Published in Madroño, in 1977, in volume 24, issue 2, pages 78-83

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Published in Annals of the Missouri Botanical Garden, in 1928, in volume 15, pages 91-108

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Published in Annals of the Missouri Botanical Garden, in 1929, in volume 16, pages 393-398

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Published in Annals of the Missouri Botanical Garden, in 1932, in volume 19, pages 497-498

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Published in Annals of the Missouri Botanical Garden, in 1965, in volume 52, pages 387-398

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Published in Madroño, in 2013, in volume 60, pages 325-329

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Published in Madroño, in 1942, in volume 6, issue 5, pages 145-151

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Published in Madroño, in 1960, in volume 15, issue 7, pages 193-197

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Published in Annals of the Missouri Botanical Garden, in 1938, in volume 25, pages 225-297

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Published in American Fern Journal, in 1960, in volume 50, pages 55-62

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Published in Madroño, in 1943, in volume 7, issue 3, pages 65-67

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Published in Botanical Gazette, in 1916, in volume 61, issue 6, pages 538

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Published in Contributions from the University of Michigan Herbarium, in 1973, in volume 11, issue 1, pages 1-24

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Published in Madroño, in 1969, in volume 20, issue 4, pages 214-219

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Published in Rhodora, in 1934, in volume 36, pages 407-8

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Published in Journal of The Arnold Arboretum, in 1977, in volume 58, issue 2, pages 190-192

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Published in Pacific Science, in 1953, in volume 7, issue 4, pages 504-512

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Published in Annals of the Missouri Botanical Garden, in 1930, in volume 17, pages 213-476

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Published in Madroño, in 1938, in volume 4, issue 6, pages 197-198

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Published in Pacific Science, in 1957, in volume 11, issue 3, pages 265-274

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Published in Botanical Gazette, in 1916, in volume 61, issue 6, pages 453-476

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Published in Botanical Gazette, in 1918, in volume 66, issue 2, pages 143-161

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Published in Madroño, in 1938, in volume 4, issue 6, pages 196

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Published in Biol Bull, in 1918, in volume 35, pages 199-206

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Published in Biol Bull, in 1947, in volume 93, pages 250-258

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Published in Jour Washington Acad Sci, in 1944, in volume 34, pages 132-133

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Published in Proceedings of The American Philosophical Society, in 1919, in volume 58, issue 220, pages 382-385

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Published in Madroño, in 1943, in volume 7, issue 1, pages 31

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Published in Madroño, in 2001, in volume 48, issue 2, pages 112-115

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Published in The Great Basin Naturalist, in 1999, in volume 59, issue 4, pages 301-314

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Published in Pacific Science, in 1966, in volume 20, issue 4, pages 435-444

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Published in Madroño, in 1998, in volume 45, issue 2, pages 146-161

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Published in Jour Washington Acad Sci, in 1941, in volume 31, pages 509-515

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Published in Proceedings of The United States National Museum, in 1958, in volume 108, pages 137-179

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Published in Torreya, in 1945, in volume 45, issue 2, pages 57-64

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Published in Psyche, in 1915, in volume 22, pages 54-59

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Published in Nautilis, in 1922, in volume 35, pages 123-129

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Published in Gardens' bulletin, Singapore, in 1977, in volume 30, pages 85-95

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Published in Breviora, in 1959, in volume 101, pages 1-12

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Published in Nautilis, in 1925, in volume 38, pages 90-92

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Published in Botanical Gazette, in 1919, in volume 67, issue 6, pages 483-500

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Published in Bulletin of The Museum of Comparative Zoology, in 1962, in volume 127, pages 479-498

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Published in Annali Mus Civ Stor Nat Giacomo Doria, in 1973, in volume 79, pages 126-171

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Published in Phytoneuron, in 2015, in volume 2015-19, pages 1-8

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Published in Bull. ent. Res, in 1922, in volume 12, pages 431-455

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Published in Rhodora, in 1968, in volume 70, issue 782, pages 274-277

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Published in Victorian Naturalist, in 1905, in volume 22, pages 3-8

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