LARKSPUR POISOlSriNG OF LIVE STOCK. 15 



or less viscid. The leaves are large and deeply cleft into about 

 five segments, and these segments are more or less deeply incised. 

 The leaf segments are oblong or obovate-cuneate. The blue-violet 

 flowers are in a dense terminal raceme, the pedicels being longer 

 than the spurs. The ovaries are bluish. 



Delphinium harbeyi has a lower limit of altitude of about 8,000 

 feet, growing from that point nearly to the timber line. It grows 

 best in damp valleys and canyons, where it may form dense masses. 

 It is found in the mountains of Colorado, Wyoming, and Utah, and 

 perhaps in the adjoining States to the north and south. It starts 

 growth early in the spring and at the Mount Carbon station attains 

 a height of from 1 to 2 feet by the month of June, forming succu- 

 lent bunches much more prominent than the grass, and doubtless 

 somewhat attractive to grazing animals. The plant grows to a 

 height of from 3 to 7 feet, the blossoms appearing about the 1st of 

 July and the seeds the latter part of the month. The exact time of 

 flowering varies, of course, with the season and the altitude. All 

 vegetation at the Mount Carbon station was from one to two weeks 

 earlier in 1910 than in 1909, and at Kebler Pass, 1,000 feet higher 

 than the station, flowering plants were collected for feeding as late 

 as the middle of August. The seeds are shed very soon after being 

 matured, and the plant begins to dry up, the stems and leaves 

 gradually becoming brown and dry. 



Delphinium cucullatttm A. Nels. 



Delphinium cucullafyumj (PL II, fig. 1) resembles Delphinium har- 

 heyi very closely in its habit and occurrence. The stems are gla- 

 brous and the leaves divided into three to seven segments. The 

 terminal racemes are closely flowered. The sepals are bluish-white, 

 the petals violet, and the ovaries white. The general appearance of 

 the flowers is bluish-gray, this coloration appearing to be constant 

 for the species. Near the Greycliff station the plants blossomed the 

 last of July. 



D. cuGuUatum is found in Montana, Wyoming, Idaho, and as far 

 south as central Utah. 



Delphinium eobustum Rydb. 



DelphiniuTn rohustwm is a perennial occurring in the mountains 

 from Montana to New Mexico and grows in the same general way as 

 Delphinium harbeyi. The stems are puberulent but not viscid. The 

 leaves are divided into five to seven segments, which are long and 

 twice cleft into linear lobes. It has the same general habits as 

 Delphinium harheyi^ but does not confine itself so closely to the 

 canyons and is readily distinguished from harbeyi by the form of 

 the leaves. 



