OF ARTS AND SCIENCES. 45 



centi-attenuatiB, patentes : corolla} lobi fauce sesqui vel duplo longi- 

 ores. Capitula nuda, subsolitaria, saepius bipollicaria. 



C. occiDENTALis. Caule scepius valido 2-5-pe<:lali ; foliis subpin- 

 natifidis sinuatisve spinulis parvulis armatis superne nunc deniidatis ; 

 involucri primum lanosissimi squamis in appeiidicem spiuescentem 

 longe sensim atteniiatis ; corollis sanguineo-puriDureis Eequaliter 5-fidis; 

 autherarum appendicibus acuminatis ; stylo baud nodoso nudo, appen- 

 dice breviusculo. Carduus occidentalis Nutt. in Trans. Am. Phil. Soc. 

 n. ser. 7, p. 418, cum char. pass. Cirsiiim Coulteri Gray, PL Fendl. 

 p. 110. — Rather common throughout California, especiall}^ in the 

 western part of the State, but extending into the borders of Nevada. 

 Apparently only seeds were collected by Douglas, from which it was 

 raised in the London Horticultural Society's garden in 1837. It was 

 sparingly collected by Coulter and Nuttall, and since by most recent 

 collectors. The heads vary in size, in some specimens being little over 

 an inch in length. 



C. Neo-Mexicanus. Magis spinosus ; involucri squamis e basi 

 saepius latiore in appendicem lanceolato-subulatam spina validiore 

 superatam productis, exterioribus plerumque reflexis ; corollis pallidis 

 subintequaliter 5-fidis ; autherarum appendicibus tenuiter cuspidatis ; 

 styli appendice stigmatica elongata filiformi nodo stepius manifesto 

 sti^Data. Cirsium Neo-Mexicanum Gray, PI. Wright. 2, p. 101. — 

 New Mexico, Fendler, Wright, Thurber, &c. 



* * Lana laxiore vel tenuiore araneosa canescentes, nunc glabriores 

 vel denudaii wides. Capitula stepius paniculata, subracemosa, vel 

 conglomerata, pollicaria ad sesquipollicarem. 



•i- Involucri squamae rigidiores spinula aciculari pungentes : flores albi 

 vel flavescentes. 



++ Corolla} limbo ajqualiter alte 5-fido, Jobis fauce duplo longioribus. 



C. Andkewsii. Ut videtur elatus, ramosus, lana laxa decidua 

 glabrescens ; capitulis ultrapoUicaribus ramos foliatos terminantibus ; 

 involucro primum arachnoideo-lanosissimo ; squamis e basi coriacea 

 oblonga vel lanceolata plerisque in appendicem subulato-acerosam pro- 

 ductis ; autherarum appendicibus deltoideo-acutatis. — California, Dr. 

 Andrews. I have seeu only a single specimen, collected probably not 

 very far from San Francisco or Sacramento : so that the species needs 

 confirmation. The corolla is hardly an inch long; its lobes 3 or 4 

 lines long, but the throat of only half their length, in which respect it 

 is unlike any other species of this division. , 



