OF ARTS AND SCIENCES : JUNE 11, 1867. 399 



in S. E. California, Dr. G. H. Horn, 1863. — This belongs to the sub- 

 division which comprises A. macrodon (of which the fruit is still un- 

 known) and A. Douglasii. It is remarkable for the capitate flowers, 

 rather few ovules, and very pointed, ovate-acuminate, crowded pods, 

 which are barely two thirds of an inch in length. 



Lathyrus SULPhureus, W. II. Brewer (L. ochroleucus ? Torr. in 

 Bot. Whippl., p. 21, non Hook.): eaulibus acute angulatis ; foliolis 

 8-12 oblongis vel ovato- seu oblongo-lanceolatis subcoriaceis rigidis 

 (lin. 6-18 longis) reticularis ; stipulis semisaggitatis sensim acumin- 

 atis vel acutissimis ; pedunculis folium ada?quantibus plurifloris ; flori- 

 bus brevibus (semipollicaribus) ; calycis dentibus valde inrequalibus ; 

 corolla sulphurea obtusissima, vexillo alas carinamque latam semi- 

 rotundatam tantum a^quantibus. — In woods, &c, along the foot-hills of 

 the Sierra Nevada, from several collectors. Variously confused with 

 L. ochroleucus, venosus, &c. Apparently the color of the flowers alone 

 has caused it to be referred to the former, and these are not " yellowish 

 white," but truly " sulphur-yellow." The limb of the keel is almost as 

 wide as long. 



Cassia Covesii : pube brevi sericea subnitente undique incana ; 

 caule 1-2-pedali e radice perenni ; stipulis setaceis ; foliolis 2-3- 

 jugis ellipticis basi insequalibus mucrone cuspidatis, glandula cum 

 stipite tomentoso setacea inter omnia paria ; racemis corymbosis pluri- 

 floris ; legumine pollicari brevi-oblongo fere recto turhido canescente 

 pedicello paullo longiore seminibus horizontalibus farcto, valvis sub- 

 marginatis. — Camp Grant, and south of Prescott, Arizona, Dr. Elliott 

 Coues (to whom the species is dedicated) and Dr. Edward Palmer. 

 " Root used by the Indians as a cathartic. Elowers bright orange- 

 yellow." In aspect, foliage, and flowers very like C. Lindheimeriana, 

 except that there are never more than 3 pairs of leaflets ; and the 

 legume is very different, resembling that of C. bauhinioides and C. 

 Bcemeriana, but more turgid ; the oval seeds apparently horizontal. 



Potentilla (Comarum) depauperata, Engelm. MSS. : pilosula, 

 erecta ; foliis pinnatisectis ; foliolis lineari-lanceolatis, panicula pluri- 

 flora; sepalis purpurascentibus e basi lata attenuato-subulatis acces- 

 soria angusto-subulata bis excedentibus ; petalis parvis linearibus atro- 

 purpureis ; staminibus 5 ; carpellis 2 in receptaculo longe villoso. 

 — Williams Mountain, Western New Mexico, A. L. Anderson. " A 

 remarkable species, connecting, as it does, Ivesia with the section 

 Comarum." G. Engelmann. 



