33^ Mnhlenbergia, Volume 2 



CARDUACEAE Neck. Act. Ac. Theod. Palat. 2: 465. 1770. 

 Carduus eduus (Niitt.) Greene, Proc. Phila. Acad. 1892: 362. 



1893- 



Cirsium edule Nntt. Trans. Am. Phil. Soc. 7: 420. 1841. 



Cnicus ediilis Gray, Proc. Am. Acad. 10: 47. 1874. 



No. 8542, collected May 18, on Stevens creek, Santa Clara 

 county, about three miles below Soda Rock, elevation 600 feet, 

 growing on a moist bank in a luxuriant growth of other plants. 

 The type was collected by Nuttall on "plains of Oregon and the 

 Blue Mountains." I have found it as far south as Monterey. 



' ' Summary 



In the first part of this paper a comparison of the floras of 

 the outer and middle Coast Ranges in Santa Clara county was 

 promised. The data are based upon the species mentioned in 

 this paper, species which have been collected by me during the 

 past three years, and specimens of which are now in my herbar- 

 ium. 



Although the Santa Clara valley, which separates the two 

 mountain ranges, is not over fifteen miles wide between Los 

 Gatos on the west and Alum Rock Park back of San Jose on 

 the east, there is considerable difference in the annual precipita- 

 tion, probably as nmch as ten inches in favor of the west side. 

 This ratio should hold as one ascends the mountains, but if there 

 is any difference the proportionate precipitation is greater on the 

 summit of the Santa Cruz mountains than on Mt. Hamilton, 

 which is about 500 feet higher than the highest peak in the 

 Santa Cruz mountains. 



Species common to the Santa Cruz Mountains and the 

 Mt. Hamilton Range 

 Dichelostemma congestum Limnia perfoliata 

 Triteleia laxa Clematis lasiantha 



Calochortus albus Delphinium patens 



luteus Eschscholtzia crocea 



venustus Drymocallis glandulosa 



