196 PROCEEDINGS OF THE AAIERICAN ACADEMY. 



squamis oblongis obtiisiusculis ca. 6 mm. longis, exterioribus dorse 

 puberulis ; corollae tubo cylindrico curvato glabro 3 mm. longo, fauci- 

 bus nuUis, limbi dentibus 5 oblongo-linearibus patentibus 1.8 mm. 

 longis obtusiusculis ; acbaeniis glabris 5-costato-angulatis deorsum 

 attenuatis 3.6 mm. longis ; pappi setis ca. 50 rufis 4.5 mm. longis 

 laevibus. — Bushy places, La Palma, Costa Rica, September, 1898, 

 altitude 1459 m., Ad. Tonduz, no. 12,583 (type, in U. S. Nat. Mus., 

 fragm. in Gray Herb.). A species well marked by the conspicuously 

 crested stipular appendages. 



Mikania hexagona sp. nov., fruticosa robusta scandens ; caulibus 

 lignosis tortis acute et subalato-hexagonis atrobrunneis cavis 1 cm. 

 diametro, internodiis longissimis (3 dm. et ultra) ; ramis oppositis 

 alato-hexagonis praecipue in angulis tomentellis ; foliis late ovatis 

 acuminatis integris 1 dm. longis 7 cm. latis basi rotundatis in petiolum 

 2.5 cm. longum plus minusve cuneatum decurrentibus paulo supra 

 basin 7-nervatisutrinque scabro-puberulis viridibus infra paulo pallidi- 

 doribus, superioribus et floralibus multo minoribus subsessilibus ; inflor- 

 escentiis composite corymbosis ca. 2 dm. diametro densiusculis ; brac- 

 teis herbaceis ovato-lanceolatis acuminatis tenuibus, ultimis involucri 

 squamas saepe aequantibus dorso obscure puberlis ; pedicellis gracilibus 

 3-5 mm. longis ; involucri squamis anguste lanceolato-oblongis acumi- 

 natis tenuibus pallide viridibus glabriusculis ; corollis 5 mm. longis 

 glabris, tuboproprio 2.5 mm. longo gracili firmiusculo, faucibus benedis- 

 tinctis campanulatis vix 1 mm. altis, dentibus limbi oblongis crispis ca. 

 2 mm. longis saepe conniventibus ; achaeniis 5-angulatis ca. 4 mm. longis 

 deorsum decrescentibus ; pappi setis ca. 70 ca. 5 mm. longis rufescen- 

 tibus ; styli ramis filiformibus nee clavellatis 4 mm. longis. — Near 

 Tovar, Venezuela, 1854-55, altitude 1700 m., A. Fendler, no. 626 

 (type, in Gray Herb.). A species seemingly well marked by its very 

 robust hexagonal stem with acute narrowly wing-margined angles. 



Mikania leucophylla (Rusby), comb. nov. Willoughbya leuco- 

 philJa Rusby, Bull. N. Y. Bot. Gard. iv. 382 (1907). 



Mikania longiflora (Rusby), comb. nov. Willoughbya longijiora 

 Rusby, Bull. N. Y. Bot. Gard. iv. 382 (1907). 



Mikania myricaefolia (Bojer) DC. Prod. v. 188 (1836). Triris 

 myricaefolia Bojer in litt. ex DC. 1. c. Examination of the tj-pe of 

 this plant of Madagascar, kindly permitted by Mr. Casimir de Candolle, 

 showed that it has alternate thickish leaves narrowed at the base to 

 short but slender petioles, heads (all in bud) nearly cylindrical, invo- 

 lucral scales 6 to 7, and florets 10 to 11. Although from the very 

 immature heads it is impossible to ascertain satisfactorily the style 

 characters or other details regarding the florets, it is nevertheless cer- 



