64 abstracts: botany 



of the genus Annona with descriptions of new and imperfectly known 

 species/' which will form part 1 of the Contributions from the United 

 States National Herbarium volume 18. Both papers are preliminary to 

 an account of the economic custard-apples and their allies, to be pub- 

 lished by the United States Department of Agriculture. 



W. E. S. 



BOTANY. — Descriptions of new plants, preliminary to a report upon the 

 flora of New Mexico. E. O, Wooton and Paul C. Standley, 

 Contributions from the U. S. National Herbarium 16, 109-196. 

 pi. 48-50. 1913. 



For some time the authors of this paper have been engaged in the prep- 

 aration of a Flora of New Mexico. This work, which has now been com- 

 pleted, will, it is expected, be published in the near future. The only 

 general descriptive manual covering any portion of the arid south- 

 western United States heretofore available has been Coulter's Botany of 

 Western Texas (Contr. U. S. Nat. Herb., vol. 2), a work which unfortu- 

 nately is now out of print. 



Little attention having been given by taxonomists to the flora of 

 New Mexcio in recent years, it was to be expected that many unde- 

 scribed species would be discovered during the progress of the investi- 

 gation just mentioned. These are described in the present paper, partly 

 to reduce the bulk of the complete Flora and partly to prevent confu- 

 sion on the part of those who wish to use it. Altogether 198 species are 

 described as new. The largest number in a single family (50) is found in 

 the Carduaceae, the group which has the largest number of representa- 

 tives in the state. In this family a new genus, Herrickia, is named, 

 based upon a plant of northern New Mexico, related to Aster and 

 Xylorrhiza. Among the other plants described may be mentioned two 

 new Yuccas, an Agave from the Organ Mountains, two oaks, six species 

 of Padus, a Robinia (the second species of this genus kno\\ai from the 

 western United States), eight species of Gaura, five of Penstemon, eight 

 of Erigeron, and four thistles. In addition to the new species described, 



65 new names or new "combinations" are published. 



P. C. S. 



