418 PEOCEEDINGS OF THE AMERICAN ACADEMY 



Bolanos, where Coulter collected scanty specimens, is not very far 

 north of Palmer's station. The paleoe of the receptacle are mostly 

 wautinor in the centre of the head. 



PZlephantopus (Distreptus) spicatus, Juss. Barranca, in ex- 

 posed level places. (87.) 



PiQUERiA TRiNERViA, Cass. Eio Blanco, in shady ravines ; August. 

 (313.) — Used as a febrifuge. 



Ageratcm corymbosum, Zucc. Chapala. (715.) — Also the 

 form answering to Ccelestina ageratoides, DC. Guadalajara, on hill- 

 sides among underbrush; August. (289, and a white-flowered state, 

 290.) Also another form, at Tequila, on stony hillsides. (351.) 



Ageratum conyzoides, Linn., var. Mexicanum, DC. Guada- 

 lajara, in wet bottoms ; September. (437.) 



Stevia TRiFiDA, Lag. Nov. Gen. &. Spec. 27. Barranca, among 

 shaded rocks. (95.) — The name takes precedence of »S'. micropliylla, 

 HBK., and *S'. multijida, DC, founded on different states of the spe- 

 cies. It appears to be an annual. 



Stevia subpubescens, Lag. Gen. & Spec. 28 ? A shrub, 3 to 6 

 feet high, white-flowered. Guadalajara; July. (224.) — Also Rio 

 Blanco, on the shaded sides of rocky hills, with a strong Anthoxan- 

 thum-like odor ; October. (673.) — The specimens, on the whole, ac- 

 cord better with the character and details given by Lagasca than does 

 Hartweg's 137, which must be of a different species. The heads in 

 Palmer's plant are much larger, the pubescence more decided and 

 cinereous, especially of the leaves, which are rather long-petioled and 

 when opposite with abruptly dilated base, answering better to the 

 " folia petiolis connatis longiora." 



Stevia s errata, Cav. Same as Hartweg's 136 {S. canescens, 

 HBK.?). Rio Blanco, on grassy hillsides ; August. (319.) 



Stevia canescens, HBK., var. (?) with short and broad leaves. 

 Probably an extreme form of S. serrata. Rio Blanco; August. (309.) 



Stevia linoides, Schultz Bip. in Linna^a, 29. 284. Less pubes- 

 cent than the var. grisea of the Batopilas collection, and quite like 

 Schultz's specimen ;■ but the acheiies are all 5-awned. Rio Blanco, 

 on hillsides among oaks and pines; August. (316.) — Also in grassy 

 bottoms ; September. (534.) 



Stevia glandulosa, Hook. & Arn. Bot. Beechey, 296. Tequila, 

 on hillsides. (357.) 



Stevia laxiflora, DC. Guadalajara, hillsides and grassy bot- 

 toms ; September. (456.) 



Stevia rhombifolia, HBK. Nov. Gen. & Spec, 4. 143. With 



