28 PROCEEDINGS OF THE AMERICAN ACADEMY. 



repens subglabra ; caule tenui flexuoso prostrate nodis radicante, inter- 

 uodiis saej^ius perlongis (ad 1 dm.) glabris aiigulato-costatis ; foiiis 

 oppositis, limbo late ovato 1.8-3.5 cm. longo 1.2-2.7 cm. lato supra 

 basin integram crenato-dentato supra viridi sparse bispidulo subtus 

 paulo pallidiore glabro basi obtuso vel breviter acuminato apice obtuso, 

 petiolo obcompresso (dorsoventraliter) limbum longitudine aequante ; 

 capitulis parvis ca. 9-tloris cymosis, cymis ca. 7-13-capituliferis termi- 

 nalibus ; involucri campanulati squamis ca. 6 obovatis viridibus obtusis 

 ciliatis 3 mm. longis ; corollae tubo proprio brevi glanduloso-puberulo, 

 faucibus campanulatis quam tubo longioribus subglabris, limbi denti- 

 bus 5 late ovatis obtusis ; acbaeniis immaturis siirsum hispidulis basi 

 rectiusculis. — Colombia, near R. Flautas, R. Paez Valley, Tierra Aden- 

 tro, Central Cordillera, alt. 2900 m., 26 January, 1906, H. Pittier, no. 

 1208 (hb. U. S. Nat. Mus. ; fragment in hb. Gray). This species stands 

 nearest P. calUtricha Robinson, Proc. Am. Acad. xlii. 15 (1906), but 

 differs in having smaller more coarsely and simply toothed leaves with 

 much longer petioles. It is also a smoother plant and has fewer- 

 flowered heads. 



Stevia alatipes Robinson, n. sp., herbacea perennis ca. 1 cm. alta 

 hirsuta ; radice fibrosa ; foiiis radicalibus ovatis vel obovatis crenato- 

 serratis ca. 8 cm. longis 4-5 cm. latis pinnatinerviis utrinque hirsutis 

 baud vel vix punctatis apice rotundatis basi angustatis in petiolum 

 alatum decurrentibus ; foiiis caulinis oppositis 2-4-jugis oblanceo- 

 latis vel fere spatulatis in petiolum alatum basi attenuatis ; intioresceutia 

 laxissime pauciramosa ; ramis nudiusculis, capitula pauca parva sacpo 

 aggregata ferentibus ; bracteis 7 mm. longis lanceolatis sessilibus her- 

 baceis ; pedicellis ad 1 cm. longis filiformibus glanduloso-puberulis ; 

 capitulis ca. 12 mm. longis 4-floris ; involucri squamis 5 viridibus lan- 

 ceolato-linearibus acutis inaequalibus ca. 7 mm. longis ; corollis 7 mm. 

 longis, tubo viridescenti puberulo, limbo albo ; acbaeniis nigrescentibus 

 3.2 mm. longis minute puberulis ; pappo e squamis 3 brevibus albis et 

 aristis 3 albidis 5-6 mm. longis barbellatis composito. — Pine forests, 

 Uruapan, Michoacan, Mexico, alt. 1680 m., 14 November, 1905, C. G. 

 Pringle, no. 10,124 (type, in hb. Gray). Near S. elatior HBK. but 

 readily separable by its much larger basal leaves with long-attenuate 

 base, its aggregated heads, etc. 



Stevia Lozanoi Robinson, n. sp., caule tereti purpureo pilis crispis 

 griseis brevibus pubescenti supra laxe ramoso folioso ; ramis divergenti- 

 ascendentibus subsimplicibus gracilibus ca. 1 dm. longis foliosis in 

 corymbos subdensos capitiformis terminantibus ; foiiis inferioribus 

 ignotis, superioribus linearibus sessilibus alternis integris 4-5 cm. longis 

 3-7 mm. latis utrinque obscure viridibus punctatis 1-3-nerviis sparse 



