OF ARTS AND SCIENCES. 125 



most nearly approaches De Candolle's genus Agaristd) are described 

 from specimens in the Hookerian herbarium. 



Coreopsis (Agarista) foliosa (sp. nov.) : ramis hirtellis usque 

 ad apicem confer tissime foliosis ; foHis (subpollicaribus) oppositis gla- 

 berrimis rigidis crassiusculis tripartitis, segmentis lateralibus .anguste 

 spathulato-oblongis, terminali tripartito ; capitulis paucis subcorymbosis 

 breviter pedunculatis ; involucri externi squamis 8 lineari-oblongis ob- 

 tusissimis pubescentibus quam interiores ovales ^ brevioribus ; hgulis 

 (flavis) oblongis ; corolUs disci luteis demum brunneis ; acheniis ob- 

 longis hirsutis utrinque unicai'inatis margine hirsutissimis biavistatis ; 

 aristis subsquamelliformibus triquetris dense ciliato-hirsutis corollam 

 adaequantibus. — Andes of Peru, Matthews, No. 1376. 



Coreopsis (Agarista) spectabilis (sp. nov.): suffruticosa? glabra; 

 foHis oppositis circumscriptione rotundis bipinnatisectis vel 3-5-sectis, 

 segmentis 5-partitis, lobis linearibus acutis integerrimis bi — trifidisve 

 laxis ; ramis in pedunculum longissimum (6-10-poll.) nudum mono- 

 cephalum desinentibus ; involucris ambobus 8-phyllis glaberrimis basi 

 connatis, squamis exterioris hnearibus quam interiores ovato-oblongas 

 colorato-marginatfe dimidio brevioribus ; hguHs 8 magnis ; disco luteo 

 brunnescente ; acheniis lineari-oblongis extus sub palea glabris mar- 

 ginibus et costa ventrali longissime villosis aristas 2 paleoliformes 

 villoso-ciliatas corollam suboequantes gerentibus. Folia sesquipoll. 

 diameti'O, capitulum disco semipoll. et ultra diam. ; ligulte pollicaria, 

 flavae. — Andes of Peru, McLean. 



Coreopsis Mauiensis (sp. nov.) : fruticosa, diffusa, parce hirtella, 

 mox glabrata ; foliis trisectis, segmentis oblongis vel subcuneatis inciso- 

 dentatis (nunc 3 - 5-partitis seu terminali pinnatipartito) ; pedunculis 

 elongatis monocephalis ; involucri exterioris phyllis linearibus (apice 

 nunc glandula instructis) interiores Eequantibus ; acheniis glabris an- 

 guste oblongis modice alatis hand contortis apice bidentatis, dentibus 

 triangulari-subulatis. — Maui, Sandwich Islands, on sandy or dry hills 

 near the coast ; a form with more dissected leaves also collected by 

 Remy. 



Coreopsis and Bidens are separated by a single, artificial, and not 

 wholly constant character. The group of species on which Nuttall 

 grounded his genus Diodonta wholly accords with the Platycarpcea sec- 

 tion of Bidens, except that the awns or teeth are antrorsely hispid or 

 naked. Recently we have received, from Mr. Fritchey of Missouri, 

 specimens of C aristosa, Michx,, or perhaps of a wild cross between 



