102 BOTANICAL GAZETTE [august 



Achacnia (manca vidi) linearia, exalata, supra glabrata aut sparsim 

 sctosa, apice nuda aut biaristata, verisimiliter 5-7 mm. longa. 



Specimens examined. — /. F. G. Stokes, Kaali, Niihau, January 191 2 

 (Herb. Bishop Mus., type). 



The elongate crenate terminal leaflets offer a curious superficial resem- 

 blance in outline to the leaves or leaflets of some species of Asplenium {A. pimni- 

 tifidum Xutt. etc.). In shape of leaves, length of petioles, habit of inflorescence, 

 number of capitula, proportionate length of exterior involucral bracts, and 

 various other respects, this species is sharply separate from B. Stokesii. 



Bidens valida, sp. now — Supra herbacea, infra verisimiliter 



fruticosa, glabra, caule tetragono, valido, =•= 7 dm. alto. Folia 



(exsiccata) atra supra, acriter serrata, non ciliata, petiolis adjectis 



4-15 cm. longa; superiora indivisa ovata aut ovato-lanceolata, 



abrupte acuminata, 2-6 cm. lata; inferiora tripartita (aut inter- 



dum pinnata? — tantum unum inferius vidi), foliolis lanceolatis, 



acuminatis petiolis tenuibus 1-5 cm. longis. Capitula pauca, 



corymbosa solitaria in pedunculis subtenuibus, maiuscula, involucro 



ad anthesin circ. 6 mm. alto et (supra) 11 mm. lato, demum circ. 



1 .4 cm. alto et (supra) 1 . 2-3 cm. lato; pedunculis saepe bracteatis, 



2-1 1 cm. longis. Involucri bracteae exteriores 7 aut 8, foliosae, 



obtuse oblongo-lanceolatae, glabrae, apice obscure induratae, 



demum 1 .5-1 .8 cm. longae et 2-3 mm. latae, interioribus longiores. 



Ligulae non observatae. Achaenia linearia, nigra, exalata, glabra 



aut sparsim setoso-hispida, apice vero exaristata, plerumque sub 



apicem biaristata aristis brevibus et retrorsum (1-3 setis) his- 



pidis, 8-13 mm. longa. 



Specimens examined. — C. N. Forbes 27 K, Haupu near Lihue, Kauai, 

 July 9, 1909 (Herb. Bishop Mus., type; Herb. Field Mus., no. 485137). 



Bidens cuneata, sp. nov. (pi. XIII). — Frutex ramosus, verisimili- 

 ter 6-10 dm. altus, ramis dichotomis, tenuibus, infra foliosis, supra in 

 pedunculos productis. Folia crassiuscula, rhomboideo-ovata, den- 

 tata (dentibus in latere singulo plerumque 3-5), ad apicem acuta, 

 ad basim anguste aut late cuneata, petiolis adjectis 3-5 cm. longis 

 et 1-2 cm. latis, petiolis tenuibus, 1-2 cm. longis. Capitula soli- 

 taria, ligulata, ad anthesin circ. 6mm. alta et 2-2.5 cm. lata, 

 pedunculis tenuibus 0.8-1 .8 dm. longis. Involucri bracteae exteri- 

 ores circ. 7, lineares, glabratae, glandulo-apiculatae, bracteas 

 interiores subaequantes. Ligulae late lanceolatae, flavae, ad 



