VOL. XI, PP. 39-41 MARCH 13, 1897 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DELPHINIUM VIRIDESCENS AND SAMBUCUS LEW- 

 SPERM A, TWO NEW PLANTS FROM THE 

 NORTHWEST COAST. 



BY JOHN B. LEIBERG. 



In the collections of plants recently made by the United States 

 Department of Agriculture in Oregon and Washington occur a 

 red-berried elder which apparently should be separated from the 

 other known species, and a remarkable larkspur with greenish- 

 purple flowers, differing conspicuously in this respect from any 

 other American member of the genus. Descriptions of these 

 two plants are given herewith. 



Delphinium viridescens sp. nov. 



Stem 1 to 1.5 meters high from fascicled subfusiform roots, smooth below 

 or sometimes minutely puberulent, the upper portion and the inflores 

 cence densely pubescent with spreading yellow hairs from glandular 

 flask-shaped bases ; basal and cauline leaves glabrous, thin in texture, 

 semicircular in outline, 8 to 10 centimeters broad, on petioles 12 to 16 

 centimeters long, deeply 5-parted, the divisions 3 to 5-lobed or cleft ; upper 

 cauline leaves pubescent, pinnately 3-parted, the divisions 3 to 7-cleft or 

 broadly lobed, often stalked, diminishing upwards and becoming linear ; 

 inflorescence a strict narrow raceme about 30 centimeters long, in very 

 robust plants reaching a length of 1 meter ; flowers secund or sometimes 

 subdistichous in the raceme, small for the size of the plant, on pedicels 

 about 10 millimeters in length ; lower sepals ovate-acuminate, about 8 

 millimeters long and 5 millimeters wide, pilose when young, becoming 

 nearly glabrous in age, brown tinged with dull purple ; spur straight, 

 about 1 centimeter long ; laminae of lateral petals deeply cleft, densely 

 pilose, about 5 millimeters long and 4 millimeters wide, dull purple in 

 color, the claws narrow and about 6 millimeters in length ; upper petals 



7 Biou Soc. WASH., VOL. XI, 1897 (39) 



