OP ARTS AND SCIENCES. 383 



ously drawn by me. Note that it is the palece, and not the arista, 

 which are extremely short. 



Carphochjete "VVislizeni, Gray, PI. Fendl. 65, & PI. Wright, i. 

 89. An interesting rediscovery of the original species of this genus, 

 not very far from the original habitat, viz. on the Cumbre, or highest 

 part of the mountains, above Batopilas, at about 8,000 feet. Palmer, 

 331. 



PIPTOTHRIX, Nov. Gen. Eupatoriacearum Ageratearum. 



Capitula pluriflora. Involucrum campanulatum, e bracteis 7-8 

 lanceolatis hand nervatis suba^qualibus, 1-2 extimis parvis additis. 

 Receptaculum nudum planum. Corolla fauce e tubo a^quilougo an- 

 gusto subito amjjliata lato-campanulata, lobis brevibus ovatis patenti- 

 bus. Anthcrte appendice hyalina ovata obtusa terminatae. Styli 

 rami prrelongi, filiformes, siirsum parum incrassati, obtusi. Achenia 

 pentagona Eupatorii. Pappus pauci-setosus, caducus, setis 6-12 tenui- 

 bus rigidis inasqualibus barbellato-scabris corolla brevioribus. 



PiPTOTHRix Palmeri. Suffrutex glabellus ; ramis gracilibus pa- 

 tentissimis ; foliis oppositis submembranaceis brevi petiolatis ovato- 

 lanceolatis plerumque acuminatis subserratis supra basim triplinerviis 

 laxe venosis, venulis creberrime minuteque reticulatis ; capitulis par- 

 vulis in cyma terminali aut corymbiformi aut paniculata; acheniis ad 

 angulos parce hirtellis. — Forma a, foliis bipollicaribus et ultra, floribus 

 " albis." Under trees near springs in the mountains above Batopilas, 

 at the Frailes, at about 7,000 feet, Palmer, 274. — Forma /3, foliis mi- 

 noribus nunc latioribus raagis serratis, floribus ochroleucis. Forming 

 underbrush, about four feet high, on the hillsides, apparently near the 

 same station {Palmer, 280) ; the " bloom yellow " according to the 

 collector's notes, but evidently no more than ochroleucous. 



EuPATORiUM Palmeri. Bipedale, puberulum ; caule suffrutescente 

 ramisque gracilibus foliosis ; foliis membranaceis oppositis ovatis et 

 ovato-lanceolatis acuminatis (2-3-pollicaribus, petiolo ^-J-pollicari) basi 

 quandoque subcordatis triplinerviis laxe venosis subserratis, pagina 

 superiore glabella, inferiore pills crispatis saltern ad venas tenui-pubcs- 

 centibus; panicula terminali laxa inferne foliata ; capitulis 8-10-floris 

 lin, 2 longis ; involucri bracteis 5-6 lanceolatis subtrinervis a^qualibus, 

 1-2 brevioribus additis ; styli ramis apice breviter clavatis per an- 

 thesin breviter demum longiuscule exsertis ; acheniis pubescentibus. 

 — Shady places, high up in the mountains above Batopilas, Palmer, 

 144, 263. Somewhat related to E. solidaginifolium, Gray, but nearer 



