1904.] NATURAL SCIENCES OF PHILADELPHIA. 109 



while Sophia halidorum Ckll. (with the beetle PhyUotreta pusilla Horn, 

 living upon it), occupied the roofs of adobe houses in the village. At 

 the Old Pecos Pueblo, a few miles to the south, we found Astragalus 

 simulans Ckll., hitherto only known from Las Vegas. Malvastrwn 

 cockerelH A. Nelson, was very common on the Kin Kale Ranch; so 

 also was the beautiful Touterea rushyi (Wooton). Fallugia acuminata 

 (F. paradoxa acuminata Wooton) and F. acuminata micrantha {F. 

 micrantha Ckll.) formed large patches, and were very attractive to 

 insects. The scarlet Castilleia Integra Gray, with the large-bracted 

 form intermedia Ckll., were very conspicuous. A single plant of Datura 

 tatula L., is worth recording; it is, of course, an accidental introduc- 

 tion. Onosmodium thurberi Gray, grew in some quantity by the Pecos 

 river. 



Spending a summer in this beautiful place, I took the opportunity 

 to study the native roses. The result of this study is here presented, 

 not because I have reached any final or dogmatic opinions, but because 

 it seems that field-study in many different localities is the only method 

 whereby the species of the group Cinnamomese will ever be understood. 

 When we have accumulated a sufficient number of observations on the 

 living plants, some talented botanist may find himself able to tell us 

 what they all mean; but for the present observations are perhaps of 

 more consequence than deductions. 



A large part of the material studied was collected and brought to 

 me in the living state by Dr. M. Grabham, of Jamaica, who spent part 

 of the Slimmer at Pecos. I was able to distinguish three main forms, 

 two of which are here introduced as new. While it is difficult, if not 

 impossible, to state definitely how many valid species exist among the 

 Cinnamomese, it seems much better to designate the recognizable forms 

 by name, than to lump them indiscriminately under the few specific 

 titles. It is just this process of lumping which has made so much con- 

 fusion, the same name being applied to a different plant by each of 

 several authors. The characters of the three forms referred to may 

 best be set forth in parallel columns. 



