AND RELATED SpECIES 585 



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what longer lateral petals are more divergent. The upper petals 

 are less oblique at the top. To this species, I refer the following 



specimens : 



New Mexico: Jorunda del Murto, 185 1, Geo. Thiirber, 2gi ; 



Mangus Spring, 1881, H. H. Kusby, 5 ; 1852, C. Wright, 8^0. 



Texas: Rio Bravo del Norte, 1852, Schott. 



4. Delphinium Penardi Huth, Helios, lo : 27. 1892 



' I have seen no specimens of tliis species and from the descrip- 

 tion one would come to the conclusion that it is simply a form of 

 D. albescens, the canned spur notwithstanding. We have seeds, 

 however, received from M. E. Autran of the Boissier Herbarium, 

 and these are very unlike those of D, albescens. They are large, 

 black, very irregular, and only slightly squamellate ; in fact, they 

 are almost identical with those o{ D. Geyeri. The upper petals are 

 also described and figured as being toothed at the apex, a condi- 

 tion T have never seen in D. albescens. 



5. Delphinium macroseratilis sp. nov. 



Stem slender, about 3 dm. high, finely grayish-pubescent; 

 leaves divided to the base into 3-5 segments, these again 2-3- 

 cleft ; raceme simple, strict, many-flowered ; pedicels erect, about 

 I cm. long; bractlets 2-4 mm. below the calyx, linear; sepals 

 white, the lower ones with a bluish spot, oblong, more than twice 

 as long as the upper petals ; spur about three times as long as the 

 upper petals, tinged with bluish, slightly s-curved ; upper petals 

 very oblique and pointed at the summit ; lateral ones much longer, 

 2-cleft and bearded ; fruit and seeds unknown. 



This is also closely related to D. albescens^ differing in floral 

 characters and the fewer segments of the leaves. Further study 

 of the species is needed, especially as seeds are lacking. 



Texas: Tom Greene Co., 1879, Frank Tweedy. 



6. Delphinium virescens Nutt. Gen. 2: 14. 1818 



r 



There is only a fragmentary specimen in the Torrey Herbarium, 

 but this is enough to show that it is quite distinct from D. Caro- 

 linianuni. Not only is the corolla of a different color, but it is 

 much larger and the spur is strongly hooked at the end. The 

 plant is much stouter than D, Carohnianum, stouter even than any 



