538 ROBINSON, 



largish heads with narrow unequal acute involucral scales passing 

 inward into narrow somewhat readily deciduous paleae. The achenes 

 are 4-5-angled as described by DeCandoUe and the species is there- 

 fore referable to Eupatorium rather than to Brickellia. With Car- 

 phephorvs, notwithstanding the presence of a few paleae on the outer 

 part of the disk, the species appears to have no close affinity. The 

 older specific name {triangularis) having been already several times 

 employed for other species of Eupatorium, cannot be here revived. 

 The only difference noted between the type of E. vitifolium and that 

 of Bulbostylis triangularis is that in the single leaf of the latter, still 

 preserved in the DeCandoUean herbarium, the base is essentially 

 truncate, while in the Liebmann plant, upon which Klatt's species 

 was founded, the leaf-base, though in the main outline truncate, is 

 slightly cordate at the insertion of the petiole. In consideration of 

 the close correspondence in all other features observed, this one slight 

 difference is believed to be merely individual. At all events, until 

 the plants can be examined in more complete specimens even a varietal 

 separation seems unwise. 



Brickellia cymulifera, spec, nov., subherbacea 3-4 dm. alta: 

 caulibus gracilibus teretibus foliosis plus minusve decumbentibus 

 crispe puberulis, internodiis 3-8 cm. longis; foliis oppositis graciliter 

 petiolatis hastato-deltoideis caudato-acuminatis grosse dentatis basi 

 cordatis utrinque viridibus sparse crispeque puberulis, laminis 3-5.4 

 cm. longis 2.5-3.8 cm. latis, petiolo 1-4 cm. longo; cymis oppositis 

 laxe patentibus 3-5-capitulatis in axillis a parte media caulis (vel 

 etiam a parte inferiori) usque ad apicem orientibus, pedunculis sub- 

 filiformibus crispe puberulis 2-3.5 cm. longis in media parte bracteas 

 binas foliaceas ovatas acuminatas integras gerentibus et ad apicem 

 V)racteolis binis parvis linearibus munitis; pedicellis filiformibus crispe 

 puberulis saepe bracteolatis 4-15 mm. longis; capitulis (valde imma- 

 turis) ca. 12-floris 6 mm. altis et diametro; involucri turbinato- 

 campanulati squamis ca. 17 convexis viridibus vel atro-purpureis 

 tenuiter striatis ciliolatis apice rotundatis, extimis dorso puberulis 

 orbiculatis, intermediis ovato vel obovato-oblongis dorso subglabris, 

 intimis oblanceolato-oblongis; corollis (immaturis) cylindricis sparse 

 granulatis 5-dentatis; achaeniis (immaturis) obconicis tomentellis; 

 pappi setis 40-50 valde inaequalibus barbellatis albis. — Mexico: 

 Minas de San Rafael, San Luis Potosi, November, 1910, Dr. C. A. 

 Purpus, no. 4802 (type, in Gray Herb.,'' the same number also ex- 

 amined in herb. Mo. Bot. Gard.). 



CoNYZA soPHiAEFOLiA HBK, Nov. Gen. et Spec. iv. 72, t. 326 



