430 PROCEEDINGS OF THE AMERICAN ACADEMY 



pinnati-(5-9-)partitis, segmentis linearibus acutis integerrimis imis 

 quanrloque bifidis ; pedunculis elongatis monot-ephalis ; involucri ex- 

 terioris bracteis lineari-lanceolatis acutis patentibus, interioris oblongis 

 obtusis pallidis ; ligulis ultra-semipollicaribus ovalibus modice nervo- 

 sis ; acheniis subulatis glabellis semipoUicaribus subrostratis ; aristis 

 plerumque 4 lineas longis. — Rio Blanco, on hillsides, very common ; 

 August. (315.) It should be compared with B. gJaherrima, DC, of 

 uncertain origin, but probably Mexican, and said to have biaristate 

 achenes, as well as 15-16-nerved ligules. 



BiDENS HETEROPHYLLA, Ort. Dec. t. 12. Guadalajara, in swamps ; 

 September. (425.) — B. triplinervia, PIBK., seems to be a form of 

 this species. 



BiDENS FERUi-^FOLTA, DC Prodr. 5. G03; but no well-grown fruit. 

 With the last. (42fi.) 



BiDENS TERETiCAULis, DC Prodr. 5. 598. Chapala, on hillsides, 

 reclining among shrubs. (713.) 



Chrysanthellum procumbens, Rich. Tequila, in rich grassy 

 bottoms. (364.) 



Galea Palmeri, Gray, n. sp. Caleacte. Parce villoso-hispida ; 

 caule simplici (bipedali) herbaceo e caudice nodoso apice nudo oligo- 

 cephalo ; foliis sessilibus lanceolatis parum denticulatis submembra- 

 naceis triplinerviis vix venosis (majoribus tripollicaribus) ; capitulis 

 loiigiuscule pedunculatis ; involucri bracteis laxe biseriatis jequi- 

 longis oblongis obtusis ; ligulis circ. 8 elongatis albis ; pappi paleis 

 innequalibus subulatis. — Rio Blanco, on grassy hillsides ; July. 

 (147.) 



Galea peduncularis, HBK. Nov. Gen. & Spec. 4. 295, t. 408, 

 var. LONGIFOLIA. {Gahjdermos longifoUus, Lag.) It has, however, 

 a pappus, while Hartweg's very similar plant has none. Rio Blanco, 

 in low rich bottoms ; August. (317.) 



Galea ZaCatechichi, Schlecht. in Linnjea, 9. 589. Tequila, in 

 narrow bottoms. (352.) — To this no doubt belongs C.rugosa, Hemsl. 

 (Cali/dermos rugosus, DG. Prodr. 5. 670). 



Galea urtic^folia, DG. Prodr. 5. 674. Rio Blanco, near the 

 head of a rocky canon ; October. (675.) 



Tridax procumbens, Linn. Guadalajara, on grassy hillsides ; 

 July. (297.) 



Tridax balbisioides. Gray, Proc. Amer. Acad. 15. 39. Rio 

 Blanco, at base of rocky hills; September. (569.) — This narrow- 

 leaved form comes much nearer to the original Galinsogn balbisioides, 

 II BK. Nov. Gen. & Spec. 4. 253, t. 386, than do the broader-leaved 



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