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Limnocitrus, a New Genus, Also New Species of Wenzelia, Paramignya and Atalantia (Rutaceae-Aurantioideae)
Vol 21, Iss 1, Page 1
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Antherostele, Genus Novum Rubiacearum Urophyllo Affine
Vol 21, Iss 1, Page 25
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A Preliminary Account of the Philippine Species of Urophyllum Wall., Pleiocarpidia K. Sch. and Praravinia Korth. (Rub.)
Vol 21, Iss 1, Page 32
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Studies in the Boraginaceae. XIV. Miscellaneous Species from Asia, Malaysia and America
Vol 21, Iss 1, Page 48
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New phanerogams from Mexico. II
Vol 21, Iss 1, Page 67
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Thirty-Five New Species of American Croton
Vol 21, Iss 1, Page 76
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The Ochnaceous Genus Capusia H. Lecomte (1926) a Synonym of the Celastraceous Siphonodon Griffith (1844)
Vol 21, Iss 1, Page 108
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Notes on Rosa and Prunus
Vol 21, Iss 1, Page 110
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A Note on Jasminum diversifolium var. glabricymosum
Vol 21, Iss 1, Page 113
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Three New Species of Citropsis, Also New Varieties of Atalantia and Fortunella (Rutaceae-Aurantioideae)
Vol 21, Iss 2, Page 115
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Studies in Theaceae. V. The Theaceae of New Guinea
Vol 21, Iss 2, Page 134
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Plantae Papuanae Archboldianae, II
Vol 21, Iss 2, Page 163
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A Monograph of the Genus Symphoricarpos
Vol 21, Iss 2, Page 201
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New phanerogams from Mexico. III
Vol 21, Iss 2, Page 253
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Old field forests of southeastern New England
Vol 21, Iss 2, Page 266
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Two New Species of Rosa from Fukien and Kwangsi
Vol 21, Iss 2, Page 274
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New Species, Varieties and Combinations from the Collections of the Arnold Arboretum
Vol 21, Iss 2, Page 276
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Wood Anatomy and Pollen Morphology of Rhus and Allied Genera
Vol 21, Iss 3, Page 279
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Wood Anatomy and Pollen Morphology of Rhus and Allied Genera
Vol 21, Iss 3, Page 279
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Plantae Papuanae Archboldianae. III
Vol 21, Iss 3, Page 292
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The Oleaceae of New Guinea collected by L.J. Brass
Vol 21, Iss 3, Page 328
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Studies in the Boraginaceae. XV. Notes on some Mexican and Central American species of Cordia
Vol 21, Iss 3, Page 336
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The Floristic Significance of Shrubs Common to North and South American Deserts
Vol 21, Iss 3, Page 356
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Records of Indo-Chinese Plants. II
Vol 21, Iss 3, Page 364
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Notes on some crucifers of Texas, Mexico and South America
Vol 21, Iss 3, Page 392
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Notes on the Dilleniaceae and their Allies: Austrobaileyeae Subfam. Nov.
Vol 21, Iss 3, Page 397
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Two Diseases of Gleditsia caused by a Species of Thyronectria
Vol 21, Iss 3, Page 405
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Professor Alfred Rehder's Retirement
Vol 21, Iss 3, Page 428
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A Monographic Study of the Genus Thyronectria
Vol 21, Iss 4, Page 429
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Studies of the Icacinaceae, I. Preliminary taxonomic notes
Vol 21, Iss 4, Page 461
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New and Critical Euphorbiaceae from Eastern Tropical Asia
Vol 21, Iss 4, Page 490
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Plantae Papuanae Archiboldianae, IV
Vol 21, Iss 4, Page 511
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The Arnold Arboretum During the Fiscal Year Ended June 30, 1940
Vol 21, Iss 4, Page 528
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Index [vol.21]
Vol 21, Iss 4, Page 547