OF ARTS AND SCIENCES : MAT 13, 1873. 639 



Rio Grande to Southern Arizona (E. Palmer). Dr. Palmer's plant, 

 with rather shorter and broader lobes and rhachis to the leaves, 

 approaches no. 114 of Hartweg's Mexican collection, which probably 

 belongs here. 



6. B. Drdmmondii. Suffrutescens, glaber ; folds obsolete puncta- 

 tis linearibus basi attenuatis crassiusculis integerrimis ; capitulis laxius 

 corymbosis ; involucri 20 - 30-flori squamis obtusis coriaceis apice 

 virido, marginibus vix scariosis ; acheniis linearibus subcompressis. — 

 Linosyris Drummondii Torr. & Gray, 1. c. — Texas, near the coast, 

 from Indianola to the Rio Grande. 



* * Euthamioidece, capitulis numerosiorbus minoribus, involucri 

 squamis apice vel costa minus parumve viridulis vel concoloribus. 



-i- Folia lanceolata vel linearia : capitula conferte corymbosa lin. 

 4—5 longa. 



7. B. Wrightii. SufFruticosa, glabra, glabrata, vel hirtello-scabra ; 

 ramis e basi lignescente erectis 1 - 2-pedalibus virgatis ; foliis lineari- 

 bus uninerviis vix punctatis mucronatis aut integerrimis aut inferioribus 

 hinc inde laciniato-dentatis ; corymbis polycephalis ; involucro 7-14- 

 floro glabro disco dimidio breviore ; squamis oblongis ovalibusque ob- 

 tusis margine angustissime scariosis apice pi. m. viridulis ; acheniis 

 turbinatis brevibus sericeis. — Linosyris Wrightii, heterophylla, & hir- 

 tella Gray, PI. Wright, 1, p. 95. — Southwestern Texas, on the Rio 

 Grande and its tributaries, to the Gila, Arizona (Sutton Hayes). It 

 varies considerably, and is not unlikely to pass into the next. 



8. B. pltjriflora. Praecedenti. similis ; foliis anguste linearibus ; 

 capitulis parum majoribus ; involucri 15-18-fiori squamis lanceolatis 

 acutis vel acutiusculis concoloribus. — Linosyris plurijlora Torr. & 

 Gray, Fl. 2, p. 2o3. — Collected only by Dr. James in Long's Expe- 

 dition, probably on the South Fork of the Platte. 



9. B. lanceolata. Fruticosa, puberula ; foliis lineari-lanceolatis 

 trinerviis scabrido-puberulis integerrimis mucronatis ; corymbis poly- 

 cephalis confertis ; involucro G - 8-floro disco parum breviore, squamis 

 oblongis, interioribus obtusis albidis, exterioribus brevibus subacutis 

 farinoso-puberulis ; appendicibus styli angusto-lanceolatis. — Chryso- 

 thamnus lanceolatus Nutt. 1. c. Linosyris lanceolata Torr. & Gray, 

 1. c. — Rocky Mountains, near the sources of the North Fork of the 

 Platte, Nuttall, by whom only as yet has this well-marked species been 

 collected. 



