OF ARTS AND SCIENCES. 419 



awns to tbe pappus as in the original. Rio Blanco, in gras«y bottoms; 

 October. (742.) — Also with avvnless or occasionally 1-awned pap- 

 pus. Guadalajara, in ravines ; September. (493.) 



Stevia phlebophtlla, Gray, n. sp. E grege S. lucidce^ pariter 

 fruticosa et glutiuosa, glabra ; foliis maxime coriaceis (plerumque 3- 

 pollicaribus) oblongo-lanceolatis ultra medium argute serratis utrinque 

 acutis brevipetiolatis veuis adscendentibus venulisque prominulis re- 

 ticulatis ; capitulis numerosissimis dense glomeratis ; involucre (lin. 3 

 longo) pubescente ; corolla fere alba, tubo glanduloso, lobis parvulis 

 extus hirtis ; pappo corouiformi denticulato latitudine achenii baud 

 altioi-e. — Rio Blanco, on shaded stony hillsides, "3 or 4 feet high, 

 bloom pinkish white, and leaves shining and very gummy"; October. 

 (679.) It is desirable to know more certainly what »S'. lucida, Lag., 

 was founded on. The plant we take for it has thinnish leaves, with 

 lax venation, somewhat oj^en cymes, nearly glabrous involucre, and is 

 near S. glutinosa, but with shorter-petioled leaves. The foliage of the 

 present species is very like that of S. venosa, Gray, of Palmer's Bato- 

 pilas collection, but still more venose, the involucre pubescent and 

 herbaceous, and the pappus different. 



Stevia Eupatoria, Willd., which doubtless includes S. purpurea, 

 Pers. Guadalajara, in ravines and by old ditches; October. (692.) 



Stevia paniculata, Lag., probably. {S. hyssopifolia, Sims, Bot. 

 Mag. t. 1861.) The same as 819 Bourgeau, and perhaps 242 Schaff"- 

 ner. Rio Blanco, in shaded ravines ; October. (755.) This is also 

 S. ovata, Lag., according to specimens cult, in Hort. Paris in 1835. 



PiPTOTHRix PUBENS, Gray, 71. sp. P. Pulmeri (Gray, Proc. Amer. 

 Acad. 21. 383) perafiinis, at pube brevi subcinerea ; foliis firmioribus 

 parum crenulatis subtus canescentibus ; iiivolucri bracteis latioribus ; 

 receptaculo fimbrillato. — Rio Blanco, on hillsides; October. (648.) 

 This form tends to confirm the proposed genus, which really cannot 

 well be merged in either Fleischmannia or Eupatorium, nor with 

 Decachceta, DC, and should stand next to them except for the anther- 

 tips, here evident but short and rounded. I fear too much has been 

 made of this character. 



Ageratella microphylla, var. Seemanm. {Ageratum micro- 

 phyllum, Schultz Bip. in Seem. Bot. Herald, 298. Decachceta Seemanni, 

 Hemsl. Biol. Centr.-Am. Bot. 2. 78, t. 42.) Capitulis paucioribus sub- 

 spicatis; foliis plerisque cuneato-ovatis obovatisque inciso-dentatis. — 

 Var. Palmeri, capitulis minoribus plerisque pedicellatis in panicula 

 angusta laxiuscula plurimis ; foliis angustioribus, secundariis lineari- 

 bus subintegerrimis nunc spathulatis parum incisis. — Rio Blanco, 



