Abstract
THE four volumes of which the titles appear above are sufficiently diverse to indicate various general features of this elaborate series. In the first place, sufficient material for the first volume on the Euphorbiaceæ is supplied by the account of the tribe Jatropheæ, while Mr. H. Wolff includes no more than a portion of the subtribe Amminese in the first volume dealing with the Umbelliferæ. The termination Jatropheæ follows the official rules that tribe names shall end in -eæ, and the suffix, -ineæ, indicates that Ammineæ is a subtribe. The Menispermaceæ are amenable to treatment in a single volume, while the inclusion of four families under one cover is due to the circumstance that certain genera, formerly included in Cornaceæ—notably by Dr. Harms in the “Pflanzen-familien”—are now severed from that family and placed in three distinct families. Of these, Garryaceæ and Alangiaceas are both monogeneric, while Nyssaceæ comprises Nyssa, Camptotheca, and Davidia. Garrya has always been a puzzle, and even now Dr. Wangerin expresses himself somewhat dubiously as to the proposed location in the Amentales near Salicaceæ. Alangiaceæ and Nyssaceæ are referred to a relationship with the Combretaceæ in the order Myrtifloræ, the only doubtful point being the exact position of the monotypic genus Davidia. With regard to the Cornaceae, the author has no hesitation in placing them at the very bottom of the Umbelli-floræ, immediately anterior to the Caprifoliaceæ. Dr. Wangerin pays special attention to the various forms of inflorescence in the Cornaceæ, and submits an analytical key to the genera founded upon anatomical characters. The family consists of ten genera, of which Cornus is the largest with fifty species.
Das Pflanzenreich. Regni vegetabilis conspectus.
Edited by A. Engler. (Leipzig: Wilhelm Engelmann, 1910.)
41. Heft. (iv. 56a) Garryace; (iv. 220a) Nyssace; (iv. 220b) Alangiace; (iv. 229) Cornace.
By W. Wangerin. Pp. 18 + 20 + 25 + 110. Price 9.20 marks. (Leipzig: Wilhelm Engelmann, 1910.)
42. Heft. (iv. 147) Euphorbiace-Jatrophe.
By F. Pax. Pp. 148. Price 7.40 marks. (Leipzig: Wilhelm Engelmann, 1910.)
43. Heft. (iv. 228) Umbellifer-Apioide-Bupleurum, Trinia et reliqu Ammine heteroclit.
By H. Wolff. Pp. 214. Price 10.80 marks. (Leipzig: Wilhelm Engelmann, 1910.)
46. Heft. (iv. 94) Menispermace.
By L. Diels. Pp. 345. Price 17.40 marks. (Leipzig: Wilhelm Engelmann, 1910.)
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Das Pflanzenreich Regni vegetabilis conspectus 41 Heft (iv 56a) Garryaceæ; (iv 220a) Nyssaceæ; (iv 220b) Alangiaceæ; (iv 229) Cornace 42 Heft (iv 147) Euphorbiaceæ-Jatropheæ 43 Heft (iv 228) Umbelliferæ-Apioideæ-Bupleurum, Trinia et reliquæ Ammineæ heteroclitæ 46 Heft (iv 94) Menispermace. Nature 87, 276 (1911). https://doi.org/10.1038/087276a0
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DOI: https://doi.org/10.1038/087276a0