128 PROCEEDINGS OF THE AMERICAN ACADEMY 



bris eciliatis ; acheniis anguste Unearibus glabris vel marginibus parce 

 hispidulis apice setulosis aut exaristatis aut aristulis 1-2 (nunc nuclis 

 nunc parce retroi'sum hispidulis) superatis. — To this belongs B. mi- 

 crantha, Hook. & Arn., but not of Gaudichaud ; B. peduncularis, DC, 

 but not of Gaudichaud ; B. miitica and B. gracilis of Nuttall. In more 

 than one collection it has been confounded with Canipylotheca mi- 

 craniha. Moreover, the awnless state is doubtless the Adenolepis pul- 

 chella of Lessing ; a gland-like thickening at the tip of the involucral 

 scales being often obvious in this, and also in some allied species (espe- 

 cially in Coreopsis Mauiensis), but it is inconstant. To this species 

 may also be referred B. panicidata, Hook. & Arn., from Tahiti (as a 

 simple-leaved state, with the awns more developed and more barbed 

 than usual), and probably B. angi(siifoHa,'N\itt. (with dissected leaves) ; 

 likewise the following varieties : — 



Var. HETEROPHYLLA (B. luxuvions, Hook. & Arn.): caule basi 

 suffruticosa? foliis longe petiolatis plerisque simplicibus oblongo-lanceo- 

 latis acumine longo integerrirao caudatis basi attenuatis, paucis trisectis, 

 segmentis sublinearibus ; acheniis sajpius biaristulatis. 



Var. OVATIFOLIA : caule herbaceo ; fohis simplicibus ovatis sub- 

 cordatis longissime petiolatis ; ovariis coronula setularum superatis 

 exaristatis. 



BiDENS Hawaiensis (sp. nov.) : herbacea, glaberrima ; caule elato 

 raraoso polycephalo ; capitulis corymboso-paniculatis ; foliis omnibus 

 simplicibus longe petiolatis oblongis vel ovatis acutis vel acuminatis 

 crebre serratis crassiusculis ; involucri glaberrimi phyllis linearibus 

 obtusis eciliatis ; ligulis 7-8 elongatis ; acheniis anguste linearibus 

 glabris apice nudo breviter biaristatis, aristis erectis retrorsum bar- 

 batis. — Hawaii, Sandwich Islands, at various stations. Disk of the 

 capitulum when in flower 3 or 4, in fruit fully 6, lines long ; ligules 

 yellow, 5-9 lines long. 



BiDENS LANTANOiDES (sp. nov.) : fruticosa, raraosa, hirsutulo-pube- 

 scens ; foliis omnibus simplicibus ovalibus oblongisve creberrime serratis 

 petiolatis ; peduuculis solitai'iis monocephalis folia subaequantibus ; in- 

 volucri exterioris phyllis lineari-oblongis discum adaequantibus ; ligulis 

 brevibus ; acheniis lineari-subtetragonis marginibus apiceque hispi- 

 dulis breviter vel brevissime biaristatis. — Eimeo, Society Islands. 

 Head 4 lines in diameter. 



Var. ? GLABRATA : magis herbacea ; foliis utrinque attenuatis ; ca- 

 pitulis subpaniculatis. — Tahiti. 



