ROBINSON. — ON CERTAIN COMPOSITAE. 213 
no. 9833 herb. nat. Cost. (= no. 7068 distrib. J. D. Sm.). This plant 
is clearly distinct from V. nicaraguensis Benth., which has 8-10-rayed 
heads, widely winged achenes, and a different leaf-contour. 
Verbesina gigantoides, Sp. nov., robusta alta; caule crasso ter- 
etiusculo purpurascenti glaberrimo plus minusve pruinoso intus cum 
medulla alba constipato ; foliis alternis pinnatifidis longe petiolatis 
firmiusculis supra glaberrimis lucidulis plus minusve ruguloso-bullatis 
subtus olivaceis molliter pubescentibus 2-3 dm. longis 1-2.5 dm. 
latis, rhachi alata ca. 2 cm. lata, lobis ca. 11 lanceolatis caudato-atten- 
uatis saepe falcatis integerrimis vel obscure undulatis 8-15 cm. longis 
2.5-4 cm. latis, infimis reflexis; sinubus rotundatis; petiolo tereti- 
usculo purpurascenti glaberrimo omnino exalato; panicula ampla valde 
convexa pubescenti ; bracteolis lineari-filiformibus ; pedicellis 3-6 mm. 
longis ; capitulis numerosissimis 5 mm. diametro 7 mm. altis ca. 20- 
oris; involucri squamis obovato- vel oblanceolato-oblongis abrupte 
acutiusculis margine ciliata excepta glabriusculis ; flosculis liguliferis 
ca. 4-5 pistilliferis ; ligulis albis oblongis 3.5 mm. longis apice leviter 
3-dentatis ; flosculis disci ca. 15, corolla albida subcylindrica, tubo 
pubescenti, limbi dentibus 5 oblongo-lanceolatis ; antheris linearibus 
nigrescentibus vix connatis; achaeniis 3.5 mm. longis pyriformibus 
anguste alatis deorsum valde attenuatis, alis ciliato-laceris, pappi aristis 
2 subaequalibus ca. 2 mm. longis. — V. gigantea Robinson & Green- 
man, Proc. Am. Acad. xxxiv. 561 (1899), in part, not Jacq. — From 
hear Yajalon, Chiapas, Mexico, 21 November, 1895, Z. W. Nelson, no. 
3423 (type, in Gray Herb.). This is one of several habitally similar 
plants, which have been in a preliminary way referred to V. gigantea 
Jacq. Happily, through the careful definition and segregation of the 
West Indian species by Prof. Urban, Symb. Ant. v. 264-265 (1907), it 
“ become possible to interpret more definitely the continental forms 
of this group. ge 
P hbeiuia leucactinota, sp. nov., perennis verisimiliter hechaces 
Tobusta alta griseo-tomentella ; caule subtereti leviter striato exalato ; 
foliis alternis pinnatifidis supra viridibus scabriusculo-puberulis epee 
molliter griseo-tomentellis 2 dm. vel ultra longitudine 1.3 dm. latis 
saepius 9-lobis ; lobis lanceolatis 4-7 cm. longis attenuatis 1.3-2.3 cm. 
___ latis, sinubus rotundatis ; petiolo late bialato basi cum auriculis magnis 
: amplexicauli sed alis in caule non decurrentibus ; inflorescentia panicu- 
_ lata magna valde convexa; bracteis foliaceis anguste meine 
ee longis acutis integris 4-8 cm. longis ca. 1 cm. latis basi biaurt 5 
Capitulis ca, 27-floris conspicue radiatis ; flosculis liguliferis ca. 5; li- 
. Sulis ellipticis albis breviter apice 3-dentatis 4 mm. longis ; corollis 
disci albidis 3 mm. longis ; antheris nigrescentibus conspicue exsertis ; 
