IM PITTONIA. 



18. L. Neo-Mexicanus. Mucli branched from the base, the 



slender and somewhat rigid branches ascending, 6 or 8 inches 

 long : canescent with a minute somewhat silky tomentuni : 

 leaves short-petioled; leaflets 5 or 6, cuneate-oblong, obtuse : 

 peduncles slender, twice the length of the leaves, 1-flowered, 

 -with or without a small 1-foliolate bract : calyx-teeth subulate, 

 shorter than the oblong-campanulate tube : corolla 4 lines 

 long, yellow : pod slender, 1 inch long, pubescent, curved 

 upwards; seeds numerous, smooth, truncate at the ends and 

 broader than long. 



A most distinct species, known to me only by a single but 

 perfect specimen which I must have collected near Silver 

 Citv, New Mexico, in the snrinrr of 1877. 



19. L. Mearnsii, Britt. in lierb. Hosackia Mearnsii, 

 Britt. Trans. N. Y. Acad. viii. 65 (1889). This is another 

 excellent species of the southwestern frontier, related to L. 

 Xeo-Mexicanus, but a more erect plant, silvery- white with 

 a dense appressed pubescence, the leaves and flowers twice 

 as large as in the above, the broad leaflets very obtuse or 

 even truncate. 



20. L. ARGYP.aius. Hosackia argyrcea, Greene, Bull. Calif. 

 Acad. i. 184 (1885). Slender and diffuse, the leaflets acute ; 

 otherwise much like the last. From San Bernardino (Parish) 

 southward to near the middle of the Lower Calif ornian 

 peninsula. 



21. L. Cedrosensis. Hosackia flexuosa, Greene, Bull. 

 Calif. Acad. i. 82 (1885) ; Pittonia. i. 202. Known only from 

 Cedros Island, where it has been collected by Dr. Veatch, 

 Lieut. Pond, and the present writer ; particularly well marked 

 by its" rigid zigzag branches with short internodes. The L. 

 jlexuosus, Lam., precludes the retention of the specific name 

 given under Hosackia. 



22. L. GuADALUPENsis. Hosackia grandijiora, Greene, 

 Bull. Calif. Acad. i. 222, not of Benth. Branches stout, erect, 



