Vol. XXVI, pp. 115-120 May 21, 1913 



PROCEEDINGS 



OF 111 E 



BIOLOGICAL SOCIETY OF WASHINGTON 



FIVE NEW PLANTS FROM NEW MEXICO. 



BY PAUL C. STANDLEY. 

 [Published by permission of the Secretary of the Smithsonian Institution. 1 



During the summer of 1912 only a few plants were collected 

 in New Mexico, at least so far as is known to the writer. Prof. 

 T. D. A. Cockerell has forwarded a small collection from the 

 region about Santa Fe, in which there is an apparently unde- 

 scribed species of Nuttallia. Mr. E. O. Wooton gathered a few 

 specimens in the San Andreas Mountains in Dona Ana County, 

 two of which, a Chrysothamnus and an Amelanchier, seem to be 

 new. More careful examination of the southwestern specimens 

 of Amsonia in the U. S. National Herbarium, at the suggestion 

 of Dr. P. A. Rydberg, reveals two new species of this group, 

 both of which occur in New Mexico, besides extending to 

 adjacent States. Descriptions of these five species are published 

 herewith. 



Nuttallia springeri Standley sp. nov. 



Stems slender, with numerous divaricate branches, white, scabrous- 

 puberulent, glabrate in age; cauline leaves (basal ones not seen) small, 

 ■jo to 35 mm. long, sessile, bright green, scabrous-hirtellous, linear, the 

 uppermost entire, the lower remotely dentate or laciniate-dentate, the 

 teeth or lobes divaricate; Mowers numerous, solitary at the ends of the 

 branches, or rarely axillary, naked or subtended by 1 or 2 leaf-like bracts; 

 hypanthium about 6 mm. Long, the calyx lobes of about the same length, 

 linear-triangular, long-attenuate, spreading or reHexed, scabrous-hirtel- 

 lous; petals 12 to 15 mm. long, spatulate, obtuse, bright yellow, narrowed 

 into a long claw, accompanied by usually 5 petal-like staminodia; stamens 

 numerous, the filaments slender; capsules cylindric, 8 to 10 mm. long, 

 scabrous; seeds flattened, 1.75 mm. in diameter or less, narrowly winged 

 or only margined, pale brownish. 



Type in the U. S. National Herbarium, No. 661,103, collected on the 



J^i— Proc. Bioj>. Soc. Wash., Vol. XXVI, 1913. (115) 



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