32 Holm Additions to the Flora of Washington. 



ing, and I have therefore added as a synonym C. intermedia Horn. This 

 name is used by Professor Lange,* since Linnaeus undoubtedly included 

 Link's sylvatica under his hirsuta, until Hornemann separated them, naming 

 the last of these ' intermedia.' f They are very different from each other, 

 and we add the following characters as supplemental to those already 

 given in the Synoptical Flora (1. c.) : 

 Cardamine hirsuta L. (C. intermedia Horn). 



Basal leaves very numerous and persisting for a long time, large and 

 forming a dense rosette; they are most often smooth; the terminal 

 leaflet is larger than the lateral ones, orbicular or reniform. Flowering 

 stems, several, simple or with a few branches, ascending from a decum 

 bent base. The uppermost pods surmount the flowering part of the 

 raceme. 



This species is said to be "abundant about Washington, D. C.," which 

 is evidently a mistake. It might have been confounded with C. sylvatica 

 Link. 

 Cardamine parviflora L. 



The basal leaves are few in number and early fading ; the plant is 

 strictly annual ; otherwise the description in the Synoptical Flora (1. c. ) 

 corresponds very well to this species. 

 Cardamine silvatica Link. 



This species is not mentioned in the Synoptical Flora. The basal leaves 

 are few, early fading; those of the stem numerous, with large and broad 

 divisions, the margin dentate. The pods are borne on more or less hori 

 zontal pedicels, and the uppermost ones are hardly surpassing the flower 

 ing part of the raceme. The plant is most often biennial in the vicinity 

 of Washington, but occurs also as a perennial in Europe. 

 63. Dentaria heterophylla Nutt. 



The Zoological Park. The author. 

 *63a. Dentaria cardiophylla Robinson. 



Described in the Synoptical Flora (1. c., p. 155). 



Collected in Rock Creek by George R. Vasey. 

 72. Camelina sativa (L.) Crantz. 



Near Rosslyn, Va. T. H. Kearney, Jr. 

 *77a. Lepidium Draba. 



Lincoln Park. A. G. Maesius. 

 80. Helianthemum Canadense Michx. 



Sand hills near Terra Cotta. The author. 

 82. Viola lanceolata L. 



Bladensburg. M. B. Waite. 

 90. Viola striata Ait. 



Near Glen Echo, along the Canal road. G. H. Hicks. On the Virginia 

 shore of the Potomac, two miles above Aqueduct Bridge. The author. 



*Lange, Joh. Haandbog i den Danske Flora. Kjobenhavn, 1586-'88, 

 page 629. 

 t Hornemann, I. W. Oekonomisk Plantelsere, 1821-'39, page 714. 



