OF AETS AND SCIENCES. 421 



lobes above the cuneate base : pubescence fine and cinereous or ful- 

 vous, not at all villous. Rio Blanco, sides of barranca ; September. 

 (G08.) — The specimens agree with Liebmaun's and Bourgeau's. 



EuPATORiUM ADENOSPERMUM, Schultz Bip. lu Seem. Bot. Herald, 

 208, var. pleianthum. Gray, Proc. Amer. Acad. 15. 26. Rio Blanco, 

 on hillsides ; October. (G51.) 



EuPATORiUM (Hebeclinium) ? Rio BlancOj in a deep ra- 



vhie ; October. (GG5.) 



EuPATOKiUM pycnocephalum, Less. {E. Schicdeanum, Schrad.) 

 Rio Bianco, bottom of barranca ; October. (G83.) 



EuPATORiuM PULCHELLUM, HBK. Nov. Gen. & Spec. 4. 119, t. 

 3-15. Guadalajara, in ravines ; October. (G91.) — Rio Blanco, with 

 more slender and open corymb ; October. (GG9.) 



EuPATORiUM Guadalupense, Spreng. [E. paniculatum, Schrad.) 

 Chapala, on sliaded hillsides. (712.) — E. grandidentatum, DC, 

 must be a synonym of E. Pazcuarense, HBK. 



Brickellia reticulata, Gray, PL Wright. 1. 84 ; a coarser and 

 broader-leaved plant than B. oliganthes and B. pvlycephala. Rio 

 Blanco, in ravines ; June. (59.) 



Brickellia lanata, Gray, 1. c. Guadalajara, on hillsides ; Sep- 

 tember. (450.) 



Brickellia Cavanillesii, Gray, 1. c. Guadalajara; September. 

 (485.) 



Brickellia corymbosa, Gray, 1. c. Rio Blanco, sides of ravines 

 and canons ; September, October. (GOl, 758.) 



Brickellia cespidata. Gray, n. sp. Species insignis ob cuspidem 

 foliorum Barroetece instar, cura pappo barbellato B. brachyplnjllce : 

 subglabra ; caulibus gracilibus 2-3-pedalibus apice laxe corymboso- 

 paniculatis ; foliis oppositis chartaceo-raembranaceis rotundo-ovatis seu 

 ellipticis (vix pollicaribus) triplinerviis venis venulisque jirominulis 

 utrinque reticulatis, basi raro subcordata subsessilibus apice obtuso 

 arista tenui e costa excurrente cuspidatis ; capitulis circa lO-floris lon- 

 giuscule pedunculatis pappoque albo niolli eximie barbellato B. hra- 

 chyphyllce ; acheniis albo-sericeis. — Rio Blanco, on exjjosed hillsides ; 

 October. (G52.) The achenes are terete and thin-walled; in age the 

 delicate walls break up, liberating tlie ten equal nerves. 



Heterotheca leptoglossa, DC. Prodr. 5. 317; a form o'i H. La- 

 marckii, Cass. Guadalajara, in rich bottoms : July. (268.) — In 

 these specimens the rays are disposed to be sterile. 



Aphanostephus humilis, Gray, PI, Wright. 1. Gl. Rio Blanco, 

 in moist bottoms ; June. (64.) 



