No. 1, May, 1921] TAXONOMY OF VASCULAR PLANTS 109 



739. Salmon, C. E. Ranunculus Lingua. Jour. Botany 58: 275. 1920. — The occurrence 

 of R. Lingua var. glabratus Wallr. is recorded in Great Britain. — K. M. Wiegand. 



740. Sargent, C. S. Notes on North American trees VII. Jour. Arnold Arboretum 2: 

 112-121. 1920. — This article deals with Prunus and Aesculus and the following new com- 

 bination and new varieties and one new hyrbid are proposed : Prunus americana var. fiori- 

 dana, P. mexicana var. reticulata (Sarg. ), P. mexicana var. polyandra (Sarg.), P. mexicana 

 var. fultonensis (Sarg.), P. virginiana var. demissa f. pachijrrhachis (Koehne), P. virginiana 

 var. melanocarpa (A. Nels.), P. virens var. rufula (Wooton & Standi.), Aesculus octandravar. 

 virginica, A. georgiana var. lanceolata, X A. mississippiensis. (See also Bot. Absts. 1, Entries 

 812, 1127, 1128; 3, Entry 1837; 4, Entry 1766; 7, Entry 2232.)— Alfred Rchder. 



741. Schneider, Camillo. Notes on American willows X. Jour. Arnold Arboretum 2: 

 65-90. 1920. — The present article deals with the sections Fulvae and Roseae each contain- 

 ing 3 species, with 2 species of doubtful affinity and a species of the section Glaucae omitted 

 from the treatment of that section. As in the preceding articles the synonymy, nomencla- 

 ture, distribution and relationship of the species and varieties are discussed at length 

 and the following new combinations proposed: Salix Bebbiana var. perrostrata (Rydb.), S. 

 Geyeriana var. argentea (Bebb), and S. Scouleriana var. Austinae (Bebb). (See also Bot. 

 Absts. 1, Entries 801, 813; 3, Entries 1838, 1839; 4, Entries 1769, 1770; 7, Entries 1490, 

 2238, 2239.)— Alfred Rehder. 



742. Standley, Paul C. A new species of Campnosperma from Panama. Jour. Arnold 

 Arboretum 2: 111-112. 1920. — Campnosperma panamensis is described as a new species of a 

 genus known before in America only from a single Brazilian species. — Alfred Rehder. 



743. Standley, Paul C. Six new species of plants from Mexico. Proc. Biol. Soc. Wash- 

 ington [D. C] 33: 65-68. 1920. — Four plants belonging to the family Polygonaceae one to 

 the Aristolochiaceae and one to the Hydrangeaceae are described from Mexico as new species. 

 They are: Aristolochia nialacophylla, Podopterus cordifolius, Ruprechtia occidentalis, Cocco- 

 loba acapulcensis, C. chiapensis, and Fcndlerella lasiopetala. — J. C. Oilman. 



744. Standley, Paul C. Trees and shrubs of Mexico (Gleicheniaceae-Betulaceae). 

 Contrib. U. S. Nation. Herb. 23 : 1-169. 1920. — This paper forms the first part of a volume 

 intended to provide a keyed synopsis of the woody plants of Mexico, and an account of their 

 local names and uses. After a short introduction describing the general features of Mexican 

 botany, the plan of the work is discussed, and a short history of the early botanical explora- 

 tion of Mexico up to the time of Humboldt is given. This is followed by a key to the fami- 

 lies. Under the families keys are given to the genera and species, and under each species a 

 brief description is generally given. The chief synonymy is included under each species, with 

 an account of the range and the local names and uses. The ferns have been treated by W. R. 

 Maxon, the grasses by A. S. Hitchcock, and the Amaryllidaceae by W. Trelease. The 

 larger genera included in this part of the work are the following: Agave, with 170 species; 

 Piper, with 59; Pinus, with 26; and Chamaedorea, with 25. The following new species and 

 new names occur: Inodes mexicana (Mart.) Standi., /. japa (C. Wr.) Standi., Yucca jaliscensis 

 Trel., Agave panamana Trel., A. stringens Trel., A. subtilis Trel., A. pedrosana Trel., A. 

 Gutierreziana Trel., A, palmaris Trel., A. rhodacantha Trel., A. pes-mulae Trel., A. paciflca 

 Trel., A. pseudotequilana Trel., A. Sullivani Trel., A. yaquiana Trel., A. rasconensis Trel., 

 A. guadalajarana Trel., A. felina Trel., A. subzonata Trel., A. mapisaga Trel., A. Bourgaei 

 Trel., A.mirabilis Trel., A. abrupta Trel., A. Wercklei Weber, A. flexispina Trel., A. Eduardi 

 Trel., A. pedunculifera Trel., A. potrerana Trel., A. inopinabilis Trel., A. convallis Trel., A. 

 dissimulans Trel., A. angustiarum Trel., A. victoriae-reginae f. Nickelsi (Roland-Gosselin) 

 Trel., A. Mulfordiana Trel., A. Schottii var. atricha Trel., A. angustissima var. Ortgiesiana 

 (Baker) Trel.— 5. F. Blake. 



745. Stephenson, T., and T. A. Stephenson. A new marsh Orchis. Jour. Botany 58: 

 165-170. 3 fig. 1920. — Orc/iis purpwreHa is described as new, consisting of two forms desig- 



