268 TAXONOMY VASC. PLANTS [Bot. Absts., Vol. IV, 



1772. St. John, Harold. Phanerotaenia, a new genus of Umbelliferae. Rhodora 21: 

 181-183. 1919. — In a study of the genus Polytaenia the writer found such fundamental differ- 

 ences in the structure of the fruits of P. Nuttallii DC. and its variety texana C. & R. as to 

 warrant their separation into two distinct genera. He, therefore, proposes the new generic 

 name Phanerotaenia for the variety which now becomes Phanerotaenia texana (C. & R.) n. 

 comb. The differences between this plant and the genera with which it might be confused are 

 given, also the description and the geographical distribution in United States. — James P. 

 Poole. 



1773. Standley, Paul 0. A neglected Solidago name. Rhodora 21:69-70. 1919. — 

 Author takes up Solidago suaveolens Schoepf, for S. odora Ait. Citation of the literature 

 giving the earlier name. — James P. Poole. 



1774. Taylor, Norman. Britton and Rose's Cactaceae. [Rev. of: Britton, N. L., and 

 J. N. Rose. The Cactaceae. Descriptions and illustrations of plants of the Cactus family. 

 Vol. 1. pp. 1-286. Plates 1-S6, fig. 1-808. Carnegie Inst. Washington, Publ. No. 248. 

 June 21, 1919.] Torreya 19: 200-203. 1919.— This book is the most thorough treatment of the 

 systematic botany of the cactus family that has yet appeared. The first volume discusses 

 Opuntia and its segregates, and Pereskia. Opuntia proper contains 254 species, as contrasted 

 with 162 in Schumann's Gesamtbeschreibung der Kakteen (1903). The volume embodies the 

 results of recent exploration by the authors and many others in the Western Hemisphere. 

 In addition to the descriptions and notes on distribution and relationship, complete synonymy 

 is given, together with a wealth of illustrative photographs and drawings. Many prevalent 

 errors as to distribution and specific limits are corrected. Three great cactus-regions are 

 distinguished: (1) Southwestern United States and adjacent Mexico; (2) Mexico and Cen- 

 tral America; (3) Argentine, including Paraguay, Uruguay and Chile. Only 56 species of 

 Opuntia, mostly endemic, are found in the intervening regions. The work is incomparably 

 the best on the subject that has yet appeared. — J. C. Nelson. 



1775. Urban, I. Sertum antillanum V, VI. [An account of Antillean plants.] Rep. Sp. 

 Nov. IS: 156-171, 305-323. 1918. — In continuation of his studies on the West Indian flora the 

 author has published the following new species and combinations of flowering plants: Stelis 

 Desportesii, Piper Oviedoi, Ficus Plumerii (F. citrifolia Lam., not Mill.), Gyrotaenia crassi- 

 folia (Urera crassifolia Vfedd.), Urera dorningensis, U. ovatifolia, Pilea cyclophora, P. parie- 

 taria (L.) Bl. var. hispaniolensis, P. Minguelii, P. caulescens (Dorstenia caulescens L.), P. 

 Tippenhaueri, Phenax urticifolius (Procris urticaefolia Poir.), Leptogonum Buchii, Aller- 

 nanthera peploides (Illecebrum peploides H. & B.), Pisonia brevipetiolata (P. discolor Spreng. 

 var. brevipetiolata Heimerl.), Clematis barahonensis, Nectandra oligoneura, Bombax Tus- 

 sacii, Eleutherinc bulbosa (Sisyrinchium bulbosum Mill.), Spiranthes quinquelobata (Oplirys 

 quinquelobata Poir.), Telramicra canaliculata (Limodorum canaliculatum Aubl.), Oncidium 

 maculatum (Epidendrum maculatum Aubl.), Dendrophylax varius (Orchis varia J. F. Gmel), 

 Talauma dodecapetala (Anona dodecapetala Lam.), Inga edulis Mart. var. grenadensis, 

 Mimosa tobagensis, Cassia Gundlachii, C. arduinervis, C. pinetorum (Chamaccrista pinetorum 

 Britton), C. pinetorum var. Picardae, C. selleana, C. exunguis, C. brachycarpa, C. martini- 

 ccnsis, Cacsalpinia Rosei, Dalbergia Berterii (Ecaslaphyllum Bcrterii DC), Machaerium 

 tobagense, Canavalia Ekmani, Rhynchosia pyramidalis (Dolichos pyramidalis Lam.), R. Swartzii 

 (Dolichos Swartzii Vail), Hyptis americana (Nepeta americana Aubl.), Blechum pyramida- 

 tum (Barleria pyramidata Lam.), and Ceratosanthes palmala (Trichosanthes palmata L.). — 

 J. M. Greenman. 



1776. Urban, I. Uber zwei Euphorbiaceen-Gattungen. [On two Euphorbiaceous genera.] 

 Ber. Deut. Bot. Ges. 36:501-507. PI. 16. 1919. — Cubincola is described and illustrated as 

 a new genus of the Euphorbiaceae and is based on specimens collected in Cuba by Charles 

 Wright in 1861. The author also presents a brief discussion of the genus Leucocroton Griseb. 

 — J. M. Greenman. 



