i 9 2o] SHERFF BIDEXS 101 



Arnott (cf. Hook, and Arn., Bot. Beech. Voy. 86. 1841), although in this 

 case the foliage was very distinct from that of Gaudtchaud's plate for B. 

 micrantha. Asa Gray, who later studied the Beechcy plant, referred -it incor- 

 rectly to B. sandvicensis Less. (cf. Gray, Proc. Amer. Acad. 5:128. 1862). 

 From both B. micrantha and B. sandvicensis my species differs most noticeably 

 in habit, being lower in stature, apparently more open in its branching, and 

 certainly with the inflorescence much more open, the heads being variously 

 scattered and at different levels, not so corymbose. 



Bidens Stokesii, sp. nov. (pi. XII). — Supra herbacea, infra veri- 

 similiter fruticosa, glabra, caule subtetragono, ramoso, ±6 dm. 

 alto. Folia ternata aut 5 foliolis pinnata, membranacea, non 

 ciliata, petiolis adjectis 4-9 cm. longa et 2.5-6 cm. lata, foliolis 

 rhomboideo-ovatis aut lanceolatis, terminali interdum breviter 

 acuminato, orbiculato-serratis, raro inciso-lobulatis, petiolis tenui- 

 bus 1.5-4 cm. longis. Capitula pauca, paniculato-corymbosa, 

 tenuiter pcdunculata (ad fines ramorum 10-14 cm. nudorum) 

 pedunculis 1-5.5 cm - longis, ligulata, ad anthesin circ. 7 mm. alta 

 et 2-2.5 cm. lata. Involucri bracteae exteriores circ. 8, lineares, 

 glabratac aut sparsissime hispidae, apice indurato, 3-4 mm. lon- 

 gae, erectae aut recurvatae, interioribus longiores. Ligulae 6-7, 

 flavidae, oblongae, apice obscure dentulatae, 7-10 mm. longae. 

 Achaenia linearia, nigra, glabra, interdum plano-marginata sed 

 non vere alata, saepe biaristata aristis tenuibus et obscure retrorso- 

 hamosis, =±= 7 mm. longa. 



Specimens examined. — John F. G. Stokes, sine numero, foot of plateau, 

 southeast, Niihau, January 191 2 (Herb. Bishop Mus., type). 



Bidens asplenioides, sp. nov. (pi. XII). — Supra herbacea, infra 

 verisimiliter suffruticosa, glabra, ramosa, caule subtetragono, 

 = t 4dm. alto. Folia submembranacea, pinnata aut ternata, 

 crenata, petiolis adjectis 6-16 cm. longa; foliolis lanceolatis aut 

 anguste ovato-lanceolatis, non ciliatis, terminali ad apicem longe 

 acuminato, 6-8 cm. longo, lateralibus ad apicem acutis vel sub- 

 obtusis et dimidio brevioribus; petiolis tenuibus 3-7 cm. longis. 

 Capitula multa, ligulata, ad anthesin circ. 1 . 5-2 cm. lata et 6-8 mm. 

 alta, pedunculis tenuibus 1-6 cm. longis. Involucri bracteae 

 exteriores circ. 5, lineari-spathulatae, demum reflexae, glabratae, 

 circ. 2 mm. longae; interioribus lanceolatae, dimidio longioribus. 

 Ligulae (mancas tantum vidi) flavae, circ. 8-10 mm. longae. 



