OF ARTS AND SCIENCES. 309 



years ago. We have it in Coulter's collectiou (no. 557 of the " Cali- 

 fornian " collection, doubtless North Mexican) ; from Magdalena, 

 Sonora, no. 1028 of Thurber's collection, and on the Yaqui River, 

 from Palmer ; also from Lower California, collected by Xantus ; but 

 not from any station within the United States. 



DiCLiPTERA ToKREYi. Caulibus 6 caudice i^erenni lignescente 

 plurimis simpliciusculis saepius strictis circiter pedalibus ; foliis omni- 

 bus lanceolatis cum petiolo brevi sub-sesqui-pollicaribus ; involucri 

 bracteis cordato-rotundis stepius emarginatis ; seminibus papillis acutis 

 nudis scabris. — D. resupinata^ Torr. Bot. Mex. Bound. 1 25 ; Gray, 

 Syn. Fl. ii. 331, maxima pro parte. — Arizona, lliurber, Wright, 

 Schott, Rothrock, Lemmon, Pringle, &c. The involucres seem always 

 to be pedunculate, more or less ; the peduncles are either simple and 

 naked, or bibracteate and bearing either one or two to four umbellate 

 secondary peduncles. 



Labiatce. 



Salvia Lemmoni. Falyentes, S. Grahami peraffiuis, undique 

 puberula ; caulibus simpliciusculis (pedalibus) herbaceis e basi sufFru- 

 ticosa ; foliis subdeltoideo- vel oblongo-ovatis inoequaliter serrulatis, 

 basi truncata vel parum cuneata ; bracteis parvis canescentibus ; calyce 

 angustiore atomifero ; corolla (pollicari) angustiore magis exserta 

 minus ventricosa. — S. W. Arizona, in the Huachuca Mountains, 

 L"mmon, Pringle. In Lemmou's collection of 1881, this was passed 

 as a form of S. Grahami, which varies much ; but the specimens col- 

 lected by Pringle in 1884 confirm the moderate distinctions. The lat- 

 ter have smaller and narrower leaves and still less ventricose corolla. 

 Only the base or caudex, from which the nearly simple stems arise, is 

 ligiiescent. It would be an acquisition to the gardens. 



Cedronella breviflora. C. paUidce, Lindl., nimis affinis, pa- 

 riter foliis omnibus subcordatis petiolatis obtusis, sed minutissime 

 puberula ; foliis floralibus verticillastra compacta subsuperantibus ; 

 dentibus calycis (lin. 3-4 longis) attenuato-subulatis corollam parvam 

 subocquantibus. — S. Arizona, in the Santa Rita Mountains, alt. 7,000 

 feet, Pringle. The specimens seem to be in normal condition ; but 

 the corolla is very small and inconspicuous, the limb hardly surpassing 

 the calyx-teeth, the lips barely a line long. 



Var, Havardi. Thyrso capituliformi ; calycis dentibus latioribus ; 

 corolla lin. 4—5 longa e calyce semi-exserta, labiis lineam longis. — 

 Cliffs and ravines of the Chisos Mountains, "VV. Texas, on the borders 

 of Chihuahua, Dr. V. Havard. 



