640 PROCEEDINGS OF THE AMERICAN ACADEMY 



h— -i— Folia angustissime linearia vel filiformia : capitula (lin. 3 

 longa) vel corymbuli saepius paniculati. 



10. B. Cooperi. Glabra, crebre punctata, glutinosa, fruticosa 

 vel fruticulosa ; foliis (ramealibus) lin. 3-4 longis lineari-filiformi- 

 bus subcrassis obtusis ; capitulis coi-ymbulosis ; involucro 6-7-floro 

 squamis 12 - 14 ovalibus oblongisque chartaceis omnino pallidis, inti- 

 mis acutiusculis ; corolla? limbo breviter 5-lobo ; appendicibus sty li 

 deltoideo-ovatis parte stigmatica dimidio brevioribus ; acheniis turbi- 

 natis sericeo-villosis asqualiter 10-costatis. — Southeastern California, 

 on the eastern slope of Providence Mountain, Dr. J. G. Cooper. 



11. B. diffusa. Glabra, parura glutinosa, obsolete punctata, basi 

 fruticosa, diffuse ramosissima ; ratnis gracillimis ; foliis (sub-semipolli- 

 caribus) fere filiformibus subcanalicnlatis apice szepe recurvis ; capitulis 

 glomerulisve 2-4-cephalis laxius paniculatis ; involucro 5 — 8-floro, 

 squamis 10-12 ovalibus oblongisque obtusissimis subcoriaceis margine 

 tenuiter scariosis, apice pi. m. viridulo ; corolla? limbo profunde 5-fido, 

 lobis lineari-oblongis ; appendicibus styli subovatis obtusis parte stig- 

 matica multo brevioribus ; acheniis lineari-turbinatis sericeo-hirsutulis 

 5-costatis ; receptaculo ex alveolis intimis in paleolas aristiformes 

 achenia subsuperantes producto : flores 1 — 2 marginales quandoque 

 imperfecte ligulati. — Ericameria diffusa Benth. Bot. Sulph. p. 23. 

 Solidago (Euthamia) diffusa Gray, Proc. Am. Acad. 5, p. 159. 

 Linosyris Sonoriensis Gray, 1. c. 8, p. 291 ; stylus perperam descr. 

 — Cape San Lucas, in Lower California, Hinds, Xantus. Yaqui 

 River (probably Yaqua River on the eastern side of the Gulf), Dr. 

 E. Palmer. 



12. B. arborescens. Glabra, resinoso-punctata, glutinosa ; ramis 

 e caule arboriformi 3 - 6-pedali erectis confertis scopariis foliosissimis ; 

 foliis (2 - 4-pollicaribus) angustissime linearibus demum marginibus 

 revolutis filiformibus ; corymbis conferte polycephalis paniculatis ; in- 

 volucro 20-25-floro discum subtequante ; squamis pluriseriatis lanceo- 

 latis acutis tenuiter puberulis, carina tantum viridulo ; appendicibus 

 styli lanceolato-subulatis parte stigmatica parurn brevioribus ; acheniis 

 brevibus turbinatis sericeo-pubescentibus 5-costatis : flores extimi raro 

 ligulati. — Linosyris arborescens Gray in Bot. Mex. Bound, p. 79. — 

 California, on dry ridges of the coast range, Santa Cruz to Tamalpais. 

 Specimens collected by Professor Brewer above Santa Cruz show an 

 attempt to produce a series of small ray-flowers : this, if at all nor- 

 mal, would remand this species to the Euthamia section of Solidago, 



