1920] SHERFF—BIDENS 103 



L 



apicem dentulatae, 8-n mm. longae. Achaenia linearia, exalata, 

 ad margines sparsissime ciliata, ad apicem ciliato-coronata, exaris- 

 tata, 6-7 mm. longa. 



Specimens examined. — W. A. Bryan, Diamond Head, Oahu, in 1903 

 (Herb. Bishop Mus., type). 



Bidens setosa, sp. nov. — Gracilis, glabra, supra herbacea, infra 

 forsan suffruticosa, caule tetragono, ramoso, =±=8 dm. alto. Folia 

 membranacea, plus minus ve ciliata, saepe sparsissime adpresso- 

 hispida, serrata dentibus mucronatis; summa nunc indivisa, ovata 

 aut lanceolata, ad apicem acuta vel acuminata, petiolis adjectis 

 3-6 cm. longa, nunc tripartita; inferiora tripartita vel pinnata 

 foliolis ovatis vel lanceolatis, petiolis adjectis 4-7 cm. longa et 

 2 -5~3-5 cm - lata; petiolis tenuissimis, 1-3 cm. longis. .Capitula 

 corymboso-paniculata interdum numerosa, parva, ligulata, ad 

 anthesin 5-6 mm. alta et 1 . 5-2 cm. lata, pedunculis tenerrimis 

 1-4 cm. longis. Involucri bracteae exteriores 4-6, patentes aut 

 reflexae, lineares, ciliatae et plus minusve pubescentes, 1 . 5-2 . 5 mm. 

 longae, interioribus breviores. Ligulae plerumque 5, flavidae, 

 anguste oblongo-ellipticae, apice (saepe profunde et acriter) 

 dentatae, 5 . 5-8 mm. longae. Achaenia lineari-fusiformia, interiora 

 supra anguste elongata, omnia exalata, exaristata, plerumque valde 

 setoso-hispida setis singulis aut saepe 2-5-aggregatis, apice setoso- 

 coronata, 7-10 mm. longa. 



_ 



Specimens examined. — C. N. Forbes 811 K, Waimea Drainage Basin, 

 west side, Kauai, July 3 to August 18, 1917 (Herb. Bishop Mus., two type 

 sheets; Herb. Field Mus., no. 485165). 



Bidens Forbesii, sp. nov. (pi. XIV). — Herbacea supra, infra veri- 

 similiter fruticosa, caule ramisque tetragonis, glabra, probabiliter 

 7-10 dm. alta. Folia inferiora magna, tripartita, petiolis adjectis 

 1-2.5 dm. longa et 5-15 cm. lata, foliolis lanceolatis, longe acu- 

 minatis, membranaceis, creberrime serratis dentibus acribus et 

 longe mucronulato-inflexis, i-i.4dm. longis et 3.5-5 cm. latis, 

 petiolis tenuibus 6-8 cm. longis; foliis superis minoribus, 7-10 cm. 



longis et 4-5 cm. latis. Capitula parva, supra folia exserta, sub- 

 corymbosa, ad anthesin 4-5 mm. alta et circ. 1 .5 cm. lata. Invo- 

 lucri bracteae exteriores circ. 3-4, anguste lineares, ad apicem 

 acutae, glanduloso-pulverulentae aut fere glabratae, patentes aut 





