McAtee — Muhlenberg on Plants in D. C. Region, 1809. 71 



lected here, namely: Thaspium trifoliatum, Phlox glaherrima, Scutellaria 

 integrifolia, Vaccinium virgaturn, Hieracium marianmn, Laciniaria spicata 

 and Blephariglottis psycodes. In addition to these a plant, No. 46, named 

 only to the genus Rhamnus, brings sharply to mind the fact that while it 

 seems within the bounds of possibility to collect here any of the 5 species of 

 Rhatnnus treated in the "Illustrated Flora," there are no preserved speci- 

 mens of any of them.^ 



The other five species of the Muhlenberg list have known ranges coming 

 close enough to our territory to be ranked as possibilities for re-collection, 

 especially in the light of several remarkable extensions of range that have 

 recently been made (e. g. Aletris aurea, Senecio crawfordii). These possible 

 rediscoveries are: Ranunculus reptans, Berula erecta, Gelsemiuni semper- 

 virens (perhaps escaped from cultivation), Viola palmata and Elephan- 

 topus tomentosus. 



Only one of all these plants (namely Liatris spicata) is in Ward's list of 

 146 'lost' species: that list as noted above, has been reduced by newly 

 published records to 110. If we add the present 11, or better 12 (including 

 the Rhamnus) we find there are still 122 previously recorded species which 

 Washington botanists have the pleasure of searching for, the search to be 

 crowned in many cases, it is hoped, by the great satisfaction of rediscovery. 



iln this connection the writer feels impelled to state that his notes record the collection 

 of Rhamnus in fruit, along Piney Branch, D. C, Aug. 28, 1904. Unfortunately he was not 

 pressing plants at that time, but specimens were brought into our laboratory for indentifica- 

 tion, and with fruit in hand, it hardly seems that an error in recognizing this genus could 

 have been made. 



