s 



The great delicacy of the very narrow ultimate pinnules will render its 

 identification easy. I have noticed no proliferous buds on the Calforn- 

 ian specimens, but otherwise they are precisely like the cultivated plant. 



30. Pellajea andromedaefolia, var. pubescens, Baker, — This 

 form, incidentally mentioned in the "Ferns of North America," is 

 very rare in collections. It has been found near San Diego by Prof. 

 Wood ; in the mountains near ^' Live-Oak Creek " by the botanists of 

 the Mexican Boundary Survey ; and recently, on the San Francisco 

 Mountain, in Arizona, by Rev. E. L. Greene. Mr. H. H, Rusby 

 has also collected it somewhere in Arizona or New Mexico, and 

 through an error of mine has distributed it as P , flexuosa. In gen- 

 eral, the pinnules are larger than in the smooth forms of F. androm- 

 edaefolia^ and often more cordate ; the rachises are finely pubescent 

 and almost glandular, and the frond shows such an approach toward 

 \\\^ ^2.x2S±tx% oi P , flexuosa that one might easily be in doubt to 

 which species a specimen should be referred. The real P. fiexuosa 

 , has the primary pinnae more or less deflexed, often very much so,, 

 and occurs with the rachis either smooth or pubescent. 



New Haven, Dec. .13, 1880. D. C. Eaton. 



3. A New Asclepias from Arizona. — In the early days of Sep- 

 tember, 1880, while enjoying a botanical excursion among the San 

 -Francisco Mountains, in the extreme eastern part of Arizona, I no- 

 ticed growing among the rocks, under the pine trees, clumps of a 

 bush which I should certainly have passed by as mere pine bushes, 

 but for the fact that they bore, toward the extremities of their pine- 

 leaved branches, the follicles of a silkweed. I gathered into my port- 

 folio a goodly number of these follicle-bearing branches, on one of 

 which I was glad to notice a few undeveloped and withered flower- 

 buds. Carefully preserving these, I afterwards soaked them out and 

 found this remarkable shrub to be a genuine Asclepias. 



On revisiting the locality, on the first day of November, I was sur- 

 prised to find the bushes enjoying a second season of flowering. The 

 species appears to be most nearly related to A. Linarta, Cav., of Cen- 

 tral and Southern Mexico ; but it differs from that altogether, m 

 floral character, as also in habit, being wholly shrubby and strictly 

 evergreen, and the leaves persisting, as in many pines, until the au- 

 tumn of the second year. In November, 1880, the leaves which had 

 put forth in the spring of 1879, were yellow and ready to fall ; all the 

 rest were bright and firmly persistent. The woody stems, even to 

 near the base, bear the scars of the fallen foliage of preceding years, 

 just as do the branches of pines. The half hardened wood of the 

 present year's growth has the milky juice of the genus in general; but 

 it is not found in the older wood. I append to this record of its dis- 

 covery, the specific character of this most interesting new species, 

 with the name which its appearance most readily suggests. 



Asclepias pinifolia.— Stems three feet high, branching, slender 



and shrubby, the young branchlets somewhat puberulent , evergreen 

 leaves alternate, much crowded, narrowly linear, an inch or more 

 long, with revolute margins and ending in a sharp callous point ; 

 umbels rather few, on peduncles much shorter than the leaves, and 



