622 PROCEEDINGS OF THE AMERICAN ACADEMY. 
its discoid heads and in the character of its corolla and achene, this 
species resembles O. cwrviflorus (R. Br.) Hemsl., but it is readily dis- 
tinguished by its different inflorescence, the heads being very short-pedi- 
celled; the leaves are longer and relatively narrower, ‘and carefully 
examined the throat of the corolla is found to be campanulate and the 
deltoid segments of the limb straightish, while in O. curviflorus the 
throat is very short and funnel-formed, the limb being of lanceolate 
spreading-recurved segments, 
Var. glabratus (Coulter), n. comb. 0. curviflorus, var. glabratus 
Coulter, Bot. Gaz. xx. 50 (1895). — Foliis tenuioribus utrinque viri- 
dibus supra scabridis subtus solum in nerviis venisque obscure 
puberulis ; inflorescentia floribusque ut formae typicae. — Volcano of 
Jumaytepeque, Department Santa Rosa, Guatemala, alt. 1850 m, 
November, 1892, Heyde & Lux, no. 4235 (of Mr. J. Donnell Smith’s 
distribution). 
Otopappus tequilanus (Gray), n. comb. Zeamenia tequilana 
Gray, Proc. Am. Acad. xxii, 425 (1887), pro parte, i. e. quoad pl. Pal- 
meri no. 359. — Foliis tenuioribus levioribus vix rugosis vix reticulatis. 
Var. acuminatus (Wats.), n. comb. Zeamenia tequilana Gray, Prog 
Am. Acad. xxii. 425 (1887), pro parte, i. e. quoad pl. Palmeri no. 394. 
O. acuminatus Wats. Proc. Am. Acad. xxvi. 140 ( 1891). — Folits quam 
ea formae typi¢ae multo rugosioribus subtus tomentosis reticulato- 
venosis. ; 
Cosmos Nelsonii Robinson & Fernald, n. sp., herbaceus perennis 
6-8 dm. altus ; caule tereti erecto subsimplici glabro ; foliis oppositis 
petiolatis bipinnatifidis 5-8 em. longis, 4—9 em. latis, segmentis 
olatis acutis plerisque 1-2 cm. longis, 4-6 mm. latis integris vel 2-3 
lobatis supra puberulis subtus paulo pallidioribus margine seabriuseulo- 
ciliolatis basi cuneato-decurrentibus, rhachi glabro gracili hie oe 
capitibus saepe 3 nutantibus 4—4.5 cm. (radiis inclusis) diametro ; 
pedunculis 9-12 em. longis ; involucri campanulati squamis.exterior 
us ca. 8 lineari-oblongis acutatis ca. 1 cm. longis 1.7 mm. latis ri 
5-nerviis, squamis interioribus ovato-oblongis quam exteriores ha : 
longioribus crebre striatis margine tenuibus pallidisque ; flosculis disct 
3 . . . - . pe +17 si- : : ; 
avis ; antheris linearibus brunneo-violaceis ; achaeniis graciliter fue 
formibus glabris ; aristis pappi saepissime 4 retrorsum barbatis quarum 
uae longae, aliae multo breviores ; ligulis 8-10 ellipticis vel oblongis 
pallide purpureis ca. 2 em, longis 1 cm. latis. — Vicinity of Cerro Na , 
Felipe, Oaxaca, Mexico, alt. 2900-3300 m., 1 September, 1894, os a 
son, NO. 1176, in part (type, in hb, Gray). — Unfortunately spect is . 
Bidens pilosa L. were by some oversight or transposition . alsonii ‘ 
distributed under the same number. — Further material of @: Ne 
