Piper — Some Western Species of Lathyrus. 191 



(Wats.) White, but that species has glabrous leaflets and calyx and appears 

 not to reach California. The other specimens were unnamed. 



In the original description of Lathyrus oregonensis White, Bui. Torr. 

 Bot. CI. 21 : 456, 1894, two specimens were cited. The first of these, Cusick's 

 No. 1372 from Union County, Oregon, differs from the type of L. coria- 

 ceus White, namely Watson's No. 297 from the Wasatch Mts., Utah, 

 only in having narrowly lanceolate leaflets. In pubescence and in floral 

 characters the two are indistinguishable. The slight difference in the 

 width of the leaflets is of no significance as evidenced by numerous recent 

 specimens which form a complete connecting series. 



The second specimen cited under the original description of L. oregonen- 

 sis is from Falcon Valley, Washington, collected by Suksdorf April 28, 

 1SS5. On the sheet are three specimens, one with narrowly linear leaflets, 

 the other two with narrow lanceolate or linear-lanceolate leaflets. In all 

 the tendrils are simple and the flowers only 9 mm. long, smaller than those 

 of the Cusick specimen. 



Inasmuch as Cusick's Oregon specimen is cited first and the specific 

 name is derived therefrom, it seems necessary to regard it as the type of 

 L. oregonensis, though the author of the name wrote "type" on both 

 sheets. The Cusick specimen is certainly the same thing as L. coriaceus 

 White. The Suksdorf plant is distinguished by its very narrow leaflets, 

 simple tendrils and smaller flowers, and is to be classed with the Cali- 

 fornia specimens. 



Lathyrus nuttallii lanceolatus, n. comb. 

 L. lanceolatus Howell Fl. N. W. America 158, 1898. 



For the privilege of examining the type specimen collected at Glendale, 

 Oregon, June 6, 1895, Howell No. 1923, I am indebted to Prof. A. It. 

 Sweetser of the University of Oregon. In the original description Howell 

 calls attention to the scattered dark glands on the stem. These glands are 

 however not a specific character as they occur on most of the western 

 species, even on L. maritimus. They may be found on any of the green 

 parts but sometimes very sparingly. Each gland consists of an ellipsoid 

 brown secreting cell borne on a shorter colorless stalk cell. In view of 

 their general occurrence it is strange they have so generally been over- 

 looked. 



Howell's specimen is not exactly matched by any other examined. The 

 outstanding features of the plant are the membranous oblong or oblong- 

 lanceolate acute cuspidate leaflets and the sparse soft pubescence which 

 occurs on the calyx, the upper part of the stem and on the under side of 

 the leaflets; stipules lanceolate, subentire; ventral calyx tooth subulate 

 not "setaceous"; corolla 15 mm. long. 



In appearance the plant is closely matched by another Glendale speci- 

 men collected by M. E. Jones, June 19, 1902, but that is wholly glabrous 

 except the ciliatlon of the calyx on which characters it would naturally 

 be referred to L. pauciflorus. 



