STANDLEY — LOCALITIES OF PLANTS FEOM NEW MEXICO. 203 



Cereus phoeniceus conoideus Engelm. Proc. Amer. Acad. 3: 284. 1856. 



= Echinocereus conoideus Engelm. 



"Rocky places on the upper Pecos," probably at Anton Chieo, for that is the 

 locality given on the labels of what appear to be the type specimens, Bigelow in 

 1853. 



Cereus viridiflorus minor Engelm. Proc. Amer. Acad. 3: 278. 1856. 

 = Echinocereus viridiflorus form. 

 "About Santa Fe." 



Echinocactus horizonthalonius centrispinus Engelm. Proc. Amer. Acad. 3: 276. 

 1856. 

 = Echinocactus horizonthalonius Lem. 

 "Dofiana," Wislizenus in 1846. 



Echinocactus wislizeni Engelm. in Wisliz. Mem. North. Mex. 96. 1848. 



"Near Dohana," Wislizenus in 1846. 



Doctor Wislizenus says in his journal on August 5: "Before reaching Dofiana I 

 met on the road with the largest cactus of the kind I have ever seen. It was an 

 oval Echinocactus with enormous fishhook-like prickles, measuring in height 4 feet 

 and in the largest circumference 6 feet 8 inches. It had yellow flowers and at the 

 same time seed, both of which I took along with some of the ribs." The discoverer 

 was fortunate in seeing so large a specimen, for such size, in this locality at least, is 

 unusual. The plant, in spite of the fact that it is extensively used by the Mexicans 

 for making a kind of candy and for other purposes, is still common and one of the 

 most conspicuous objects upon the sandy mesas about Dona Ana. 



Echinocereus coccineus Engelm. in Wisliz. Mem. North. Mex. 93. 1848. 



"With the foregoing (E. triglochidiatus), also about Santa Fe," Wislizenus in 1846. 



There is no specimen from Wolf ('reek in the Engelmann Herbarium, but there is 

 one from Santa Fe, so the latter is perhaps to be considered the type. It is altogether 

 possible, as has been suggested, that this is the same as the Mamillaria aggregata of 

 Emory's Reconnoissanee. E. coccineus is the only New Mexican Echinocereus, with 

 one exception which need not enter into consideration, that forms dense hemispherical 

 masses like the plant there illustrated. 



Echinocereus neomexicanus Standley, Bull. Torrey Club 35: 87. 1908. 

 "Mesa west of the Organ Mountains," Standley in 1907. 

 The type plants were cultivated but came originally from this locality. 



Echinocereus triglochidiatus Engelm. in Wisliz. Mem. North. Mex. 93. 1848. 

 "On Wolf Creek, in pine woods," Wislizenus in 1846. 



Echinocereus viridiflorus Engelm. in Wisliz. Mem. North. Mex. 91. 1848. 



"Prairies on Wolf Creek," Wislizenus in 1846. 



Collected on July 24, doubtless, since this stream was crossed on that day. This 

 species is the type of the genus Echinocereus. 



Mamillaria aggregata Engelm. in Emory, Mil. Recon. 155./. 1. 1848. 



This was sketched on October 18. On that day Emory was at Ben Moore and the 

 Copper Mines, so the plant must have been found somewhere in that now classic 

 locality. The species was described from a rather poor sketch, and it seems improba- 

 ble that anyone will ever be able to determine what the sketch represents. Doctor 

 Engelmann believed this to be Echinocereus coccineus, but it might possibly be one 

 of the cespitose Mamillarias. 



Mamillaria macromeris Engelm. in Wisliz. Mom, North. Mex. 97. 1848. 

 "Sandy soil near Dofiana," Wislizenus in 1846. 

 No doubt collected upon the mesa near that settlement, for it is common there. 



