110 PROCEEDINGS OF THE AMERICAN ACADEMY 



short : involucre commonly campanulate rather than turbinate, 2 lines 

 long ; bracts about 8, oblanceolate, pubescent, purplish, scarious-mar- 

 gined: rays none: disk flowers white, 10-12: achenes sharply 4- 

 augled, very pubescent : pappus scales 8, suborbicular, narrowed and 

 thickened toward the base. — Rio Hondo, State of Mexico, Sep- 

 tember, 1891 (n. 5006), and from the same locality, September, 

 1892 (n. 4289). Well chai-acterized by its short-pedicelled, some- 

 what aggregated heads, and subcampanulate involucres. 



Senecio alienus. Nearly smooth below, minutely glandular 

 above : stem herbaceous, purplish, somewhat striate, with flexuous 

 character suggestive of a climbing habit : leaves long-petioled, shal- 

 lowly 3-lobed, broadly triangular in outline, or by the development of 

 two obtuse angles near the base irregularly pentagonal, finely cuspi- 

 date-dentate, nearly smooth, light colored sometimes purplish beneath, 

 2^-4 inches in diameter, peltately attached near the subcordate ba?e ; 

 lobes acute : inflorescence lax, irregularly racemose-paniculate : bracts 

 filiform: the heads developing successively the highest first, 12-15- 

 flowered : buds ovate : involucral bracts purplish, hispidulous and 

 glandular, about 8 in number, linear lanceolate with incurved acute 

 tips: corolla of Eusenecio : anthers sagittate: achenes glabrous, 10- 

 ribbed. — Mountains near Patzcuaro, Michoacan, December, 1891 

 (n. 5056). In its peculiar inflorescence and successive development of 

 the heads, as well as in its sagittate anthers, this species approaches 

 the East Indian section Synotis. 



Senecio Jaliscana, Wats. (Proc. Am. Acad., XXVI. 143). Mr. 

 Pringle's later specimens of this species add the following characters. 

 Height 8-10 feet: lower leaves rather deeply cordate, shallowly 

 lobed, 8 inches long, nearly as broad. — Cool wooded canons, moun- 

 tains near Lake Chapala, State of Mexico, November, 1892 (n. 4329). 



Cacalia platylepis. Root a cluster of strong fibres : stem her- 

 baceous, woolly at the base, otherwise smooth, sulcate-striate : radical 

 leaves long-petioled, ovate, cordate ; limb coriaceous, smooth, strongly 

 reticulated, piunately divided, 10-12 inches long, two thirds as broad ; 

 segments irregularly 2-3-parted, the margins callous-denticulate : the 

 cauline leaves much reduced, the upper consisting almost entirely of 

 broad ovate sheathing petioles, toothed near the a{)ex : heads corym- 

 bose, very large, 40-50-flowered, subtended by several laciniately 

 toothed bracts : involucre broadly campanulate ; the scales strongly 

 imbricated in two series, ovate, thickened in the middle, acutish, the 

 margins ciliolate, the tip bearing a tuft of hairs : corolla very slen- 

 der, 6-7 lines long, the tube somewhat exceeding the limb : achenes 



