ioo BOTANICAL GAZETTE [august 



subacutae et glanduloso-apiculatae, 3-6 mm. longae, quam interi- 

 ores paulo breviores. Ligulae 7-8, anguste obovatae, apice obscure 

 dentulatae, 1. 5-1. 8 cm. longae. Achaenia submatura nigra, 

 plana, exalata, marginibus apiceque setulosa, exaristata aut 

 obscurissime biaristata, circ. 8 mm. longa. 



A plant of peculiar aspect, embracing habital characters of Cosmos and 

 Coreopsis as well as of Bidens, hence the name ampledens. 



Specimens examined. — C. N. Forbes 1839 0, Kawaihapai, Waianae 

 Range, Oahu, Hawaiian Islands, sine tempore legendi (Herb. Bishop Mus., type; 

 Herb. Field Mus., no. 485361). 



Bidens micranthoides, sp. nov. — Herba glabrata, infra suffruti- 

 cosa. supra ramosa, ramis gracilibus, 3-5 dm. alta. Folia pinnata 

 aut rarius ternata, petiolis adjectis 3-7 (-12.5) cm. longis et 

 2-5 (-8) cm. lata, foliolis ovato-lanceolatis aut raro ovatis, serratis, 

 ad apicem plerumque acutis aut etiam longissime acuminatis, 

 nunc membranaceis, nunc subrugoso-crassiusculis, foliolis imis 

 raro tripartitis, petiolis tenuibis 1-5 cm. longis. Capitula supra 

 folia exserta, laxe corymbosa, ad anthesin 5-7 mm. alta et 1 .5-2 .5 

 cm. lata. Involucri bracteae exteriores 5-7, lineares, ad apicem 

 subobtusae, glabratae aut glanduloso-pulverulentae, 1-2.5 mm. 

 longae, interioribus multo longioribus. Ligulae 4-6, flavae, ovato- 

 oblanceolatae, ad apicem 2-4-dentulatae, circa 1 cm. longae. 

 Achaenia linearia, exalata, supra et ad margines sparsim setosa, 

 apice setoso-coronulata et biaristata aristis retrorsum hamosis 

 aut saepe plus minusve exaristata, 7-9 mm. longa. 



Specimens examined. — Captain Beechey, Oahu (May 19-30, 1826, fide 

 Hook, and Arm, Bot. Beech. Voy. p. i. 1841) (Herb. Hookeri in Herb. Kew); 

 C. N. Forbes 494 K, Wailua Falls, Kauai, October 5, 1916 (Herb. Bishop 

 Mus.; Herb. Field Mus., no. 485156); idem 592 K, Nonou Mountains, 

 Kauai, October 16-17, I 9 l ^> (Herb. Bishop Mus.; Herb. Field Mus., 

 no. 485160); idem 704 K, Haupu Range, above Nawiliwili Bay, Kauai, 

 October 31, 1916 (Herb. Bishop Mus., type); idem 1405 0, Manoa Valley, 

 Oahu, November 23, 1909 (Herb. Bishop Mus.; Herb. Field Mus., no. 485254); 

 idem 1849 O, Waiolani Ridge, Oahu, October 27, 1913 (Herb. Bishop Mus.); 

 idem 2014 0, ridge east of Kuliououiki, Oahu, November 17, 1914 (Herb. 

 Bishop Mus.). 



As the name suggests, this species resembles more or less B. micrantha Gaud. 

 In some cases the resemblance in foliage is very deceiving. The preceding 

 specimen by Beechey had been determined as B. micrantha by Hooker and 



