92 



UNITED STATES AND MEXICAN BOUNDARY. 



grassy plains between Monterey and Santa Barbara^ California; Parry. Dr. Stillman bas de- 

 tected a second species of this genus.* 



TucKEEMANiA MARITIMA, Nutt. in Trans. Amer. Phil. Soc, 7, ^ 363 ; Torr. d: Grmu I, c. San 



March : Parrv. It has bee 



gardens from 



Sanvitalta AbertIj Gray^ PI. FendL p. 87. Stony hills^ CobrC; New Mexico ; BigeloiVy 

 Wright^ Tlmrher. 



Sanvitalia TRAGiiEFOLiA, BO. Prodr. 5j p. 628» On the Eio Grande above Presidio ; ScJiott. 



Oligogyne TampicanAj DC. Prodr. 5, p. 529. Eagle Pass, Santa Rosa, etc., on the Eio 

 Grande ; BigeloWy Schoft, 



XiMENESiA ENCELioiDES; Cav. In various forms, especially var. cana. From the lower Eio 

 Grande to Cobre and the Gila. 



Yerbesina P0D0CEPHALA5 Grayy PL Wright. 2, p. 92. Sonora, near Santa Cruz^ Wright. 

 Sierra west of Santa Cruz and Tucson ; Schott. This is nearly related to V. pedunculosa, 

 SchidtZy Bip. (Actinomeris pedunculosa, DG.^ Verbesina capitaneja, Nees) ; but that has the 

 leaves decurrent on the stem, 



VEEBESHiTA YiRGiNiCA, Liuu. var. (V. microptera & V. polycephala, DO.) Lower Eio Grande, 

 etc.; Scholt. 



Zexmenia Texana, Gray, PL Wright. 1, p. 112. Wirtgenia Texana, Schultz^ Bip. in Seem. 

 Bot. Herald^ p. 304. On the San Antonio, Pecos, San Pedro, and the Eio Grande ; BigeloiVy 

 Parry ^ etc. Dr. Schultz, apparently with reason, has separated this from Zexmenia, and has 

 referred it to his African genus Wirtgenia, on account of a semilunar or roundish 8q[uamula 

 appressed to the base of the achenium on each side, and indeed adherent to it. Here it is of 

 soft fleshy texture when in good condition, but it dries up at length, leaving only a vestige. 

 Dr. Schultz lias overlooked the fact that the plant (varying greatly as to the wings of the ache- 

 nium and the awns of the pappus) is pretty clearly Wedelia hispida, H. B. K.y which specific 

 name may claim to he restored. A specimen from Schultz, gathered hy Schaffner, in Mexico, 

 near Tacuhaya, is the same as a plant cultivated in the Jardin des Plantes in the year 1815. 



Zexmenia EREViFOLiA, Gray, PI. Wright. 1, p. 112. Mountains, etc., on the Rio Grande at 

 the great canon, Eagle Pass, Rio Concho; Bigelow, Parry, Schott. 



Spilanthes NuTTALLii, Torr. & Gray, Fl. 2, p. 356, var. Western Texas, San Felipe, Pie- 

 dras Pintas, Zocate creek, Los Moros, etc.; Bigeloiv, Schott. 



Flayeeia chloe^folia, Gray, PL Fendl. p. 88. Comanche and Leon Springs, southern 

 Texas ; Parry, Bigeloiu. 



Flaveria Contrayekba, Linn. Along the lower Rio Grande ; Bigelow, Parry. 



Sartwellia Flaverde, Gray, PL Wright. I, p. 122. Rio Caheza, Texas ; Thurler. Plain 

 below San Carlos, Cohahuila ; Schott. 



* 



^ Leptosyke Stilimajtii (sp. Dov.) : fo]5is icferloiibufi oppositis, omnibus tiifldis seu pinnato-S-partitiw, segmentis rhacbt 

 que planis anguste linearibus ; pquamis involucri externi oblongis ; corollis baud annulato-barbatis ; appendicibus styli fl- 

 disci baud apiculatis ; acbeniis glaberriniis, radii apiculatis margine fungoso subrugoso cinctis. In the valley of the Upper 

 Sacramento, Dr SLillman. 



The single specimen collected is a span high, with shorter and coareer leaves than L. Douglasii, and smaller heads. 

 The scales of the exterior involucre are broader and shorter, rather fewer, and externally sparingly bearded at their base. 

 There is only a faint indication of the bearded ring, so manifest on the tube of the disk-corollas of L. Douglasii ; nor do the 

 acheaia show a trace of the capitate hairs of that species. The appendages of the style, moreover, arc very obtu&e, and 

 dtBtituie of the abrupt and sharp lip. Still it is an undoubted congener of L, Douglasii. 



-UL4<>^ 



