Wooton: THE LARKSPURS OF NEw MExIco ST 
7. DELPHINIUM ROBUSTUM Rydb, Bull. Torrey 
Club 28: 276. 1901 
Type locality : ‘‘ Wahatoya Creek, below the Spanish Peaks,”’ 
Colorado. 
I have not seen authentic material of this species, but Dr. 
Rydberg cites a specimen collected at Raton in 1846 by Abert. 
We have, in our herbarium, two sheets of a specimen collected 
in Chicorico Cafion near Raton, New Mexico, by Professor Cock- 
erell, Aug. 25, 1900, which I am at present unable to place. I 
took it to be D. robustum Rydb., but Dr. Rydberg feels sure that 
this determination is incorrect, and is inclined to believe that my 
proposed D. novo-mexicanum is his D. robustum. There is but one 
argument (in the present state of our knowledge) in support of 
my opinion that they are probably separate species, and that is 
the rather large distance between their distribution areas and lack 
of specimens of the species from intermediate points where it 
might be expected; one or two such places having been visited 
by capable botanists who obtained other species of the genus but 
not this one (if it be one). 
Being unacquainted with Professor Cockerell’s plant in the field 
I hesitate to name it as new, though Dr. Rydberg thinks it such. 
I believe that a specimen collected by Mr. C. C. Marsh, Sept. 2, 
1883, in “*Chusa”’ (Chusca?) Valley, New Mexico (U. S. Nat. 
Herb., sheet ”o. 2034), and two others from Sierra Grande, New 
Mexico, collected by Mr. Arthur H. Howell, Aug. 15, 1903, 
nos, 218 and 228 (U. S. Nat. Herb., sheets uo. 495,103 and 
495,113) are the same as Professor Cockerell’s plant. 
8. Delphinium novo-mexicanum sp. nov. 
Plant perennial, with strict stems 1-2 m. high, glabrous up to 
the inflorescence, bluish along one side and slightly glaucous ; 
leaves circular in outline, 8-15 cm. in diameter, palmately parted 
into 5-7 narrowly cuneate segments and these again cleft and 
parted into a number of lanceolate, divergent, acuminate lobes, 
evenly and finely appressed-pubescent throughout, dark green 
above, much lighter below; petioles of the lower leaves 10-15 
cm. long, slightly winged at the base; inflorescence elongated, 
2-5 dm. long, at first strict and flowers crowded, later becoming 
paniculate, the pedicels elongating a little in fruit, peduncles, pedi- 
