io8 BOTANICAL GAZETTE. 



with Toivnsendia ; Heleastrum ; Hesperastrum, containing but a sin- 

 gle species, A. Shastcnsis\ Biotia ; Euaster, or Aster proper; D(el- 

 LiNGERiA ; Iaxthe; Orthomeris. The annual and biennial Asters 

 are grouped in the following subgenera, Oxytripolium, Conyzopsis, 

 and Mach.eranthera. Among the true Asters are several forms 

 which become species, as A. Portcri for A. ericoidcs, var. strictus and 

 A. Fringlei, from the northern end of Lake Champlam. 



A new genus of Astcroidcie is proposed under the name of Gund- 

 LACHIA, a West India plant which had been wrongly referred to Soli- 

 dago. Other new Compositae named belong to the genera C/icenactis, 

 Actinokpis, LapJiaiiiia, Flcischmannia, Eupatorium, and Philactis. 



The second part of the paper contains descriptions of some new 

 species of Asclepias. Tluee species from southern-western United 

 States are named by Mr. E. L. Greene, and three from Mexico by 

 Dr. Gray. 



The third part describes a new genus of Gciitiaiiaccce, and names 

 it Geniostemon, Engelm. & Gray. It contains two species, both 

 of them Mexican. 



Part four contains "Miscellanea^ of the North American Flora." 

 Of course there is a new Astragalus, and it bears the name of its 

 discoverer, Mr. E. L. Greene. A species of Sedum fr^m near Salt 

 Lake City bears the name of our good friend, Mr. Thos. Meehan. 

 It was collected by Mr. John Reading, the live plant being communi- 

 cated by Mr. Meehan. In dedicating it Dr. Gray pleasantly remarks, 

 "It is so desirable to connect in this way the name of Mr. Meehan 

 with the botany of the country which he has done so much to illus- 

 trate, that the actual collector will probably join us in wishing it to be 

 commemorated by this pretty little species of Sedum. It will not 

 make much show among Meehan's ''Flowers of the United States Il- 

 lustrated," of which four goodly volumes ha^e already appeared un- 

 der his editorship; but it is to be hoped that it will find a place in the 

 fifth volume. 



A new species of Douglasia is described from Mount Hood, Ore- 

 gon, having been collected by Joseph and T. L. Howell. Gllia de- 

 pressa is decribed by Marcus E. Jones from southern Utah. 



A new genus of Eitphorbiaceoe. from Arkansas and Texas is de- 

 scribed under the name of Reverchonia, in honor of M. Julien Rev- 

 erchon, of Dallas, Texas. "The relationship of this plant to Phyl- 

 lanthii-s is so close, that, were it not for a combination of characters, 

 it might be taken for an ^h^xxdsvl Phyllanthiis." — }. M. C. 



Gazette for January, 1880. — If any readers of the Gazette 

 have duplicate copies of Vol. V, No. i, we would be glad to buy 

 them at the regular rates. 



