OF ARTS AND SCIENCES. 75 



sioribus viridulisque, in bracteolas pedicelli brevis transeuntibus ; styli 

 appendicibus tenui-subulatis ■ parti stigraatiferae latiori a;quilono-is ; 

 acheniis sericeo-villosis subturbinatis. — Near the entrance of tlie 

 Tantillas Great Cailon, in Lower California, near the borders of the 

 State, Dr. E. Palmer. This singularl}' resembles our Aplopappus 

 cuneatus ; but it has no trace of rays; the leaves are destitute of 

 glutinous exudation and are obscurely when at all punctate ; the scales 

 of tlie involucre are not carinate ; the akenes shorter and silky ; and 

 tlie bristles of the pappus not (as in that plant) clavellate-thickened. 

 It must stand near to B. Menziesii ; but the style-appendages are as 

 iu the Chrijsothamnus section. 



"^ BiGELoviA (Chrysothamnopsis, post No. 15 revisionis) Engel- 

 niANNi. Spithamtea et ultra e basi fruticosa, fere glabra et viridis ; 

 foliis crebris angustissime linearibus rigidulis mucronato-acutatis pateii- 

 tibus (poll. 1-2 longis semilin. ad lineam latis), costa valida ; capitulis 

 sessilibus fastigiatim corymboso-glomeratis ; involucro oblongo-tur- 

 binato 15-20-floro, squamis oblongo-lanceolatis cuspidato-acuminatis, 

 exterioribus sensim brevioribus hand folioso-appendiculatis ; corollis 

 5-dentatis; appendicibus styli breviter crassiuscule subulatis ; acheniis 

 lineari-oblongis glaberrimis. — Plains of the eastern part of Colorado, 

 at Hugo Station on the Arkansas Pacific Railroad, Dr. Engelmaun 

 and Dr. Parry, 1874 ; H. N. Patterson, 1875. 



BiGELOViA Greenei. (Chrysothamnus, * * H- ante No. 19 

 revisiojiis.) Pedalis, glaberrima ; foliis angustissime linearibus 

 mucronatis minutim remotiuscule hirtello-ciliolatis ; capitulis corym- 

 boso-fasciculatis angusto-oblongis ; involucri squamis oblougis margine 

 tenuiter scariosis apice subito caudato-acumiuatis ; pappo rigidulo. — 

 Huerfano Plains, southern part of Colorado, Rev. E. L. Greene, 

 1872. 



y 



DiPLOSTEPHiUM CANUM. (ApLOSTEPHTUM, ligulis paucis parvis 

 stylo sue brevioribus, pappo simplici.) Frutex ramosus, validus, to- 

 mento implexo dealbatus ; foliis spathulatis vel angusto-oblongis basi 

 attenuatis subpetiolatis integerrimis planis e costa valida subreticulato- 

 venosis ; capitulis laxe cj-mosis vel subpaniculatis, primariis in dicho- 

 tomiis sessilibus ; involucro brevi-oblongo crebre tomentoso, squamis 

 obtusis ; floribus purpurascentibus, radii 4-6, ligula inconspicua disco 

 breviore 2-3-dentata; disci 12-20, corollis 5-deutatis, appendicibus 

 styli brevibus acutiusculis ; acheniis linearibus subcompressis 4-5- 

 nerviis sericeo-hirtellis ; pappo e setis rigidulis plerumque ajquali- 

 bus, vel perpaucis exterioribus minimis. — Guadalupe Island, off 



