34 PEOCEEDINGS OF THE AMERICAN ACADEMY. 



fortunately described the anthers as exappendiculate. This has led to 

 some misapprehension as to its affinities, and it has been placed in the 

 Piquerinae by Hoffmann in Engl. & Prantl, Nat. Pflanzenf. Nachtr. 

 zu iv. Ab. 5, 321 (1897), who seems to have overlooked Professor J. M. 

 Holzinger's notes on the subject. Bull. Torr. Bot. Club, xx. 287, t. 160 

 (1893), Careful dissection shows that the anthers are each provided 

 with an ovate deeply retuse membanaceous apical appendage. This 

 trait throws the genus into the Ageratinae, where it should probably 

 be placed nearest Alomia, a conclusion long ago reached by Professor 

 Holzinger. 



Ageratum scorpioideum Bak. in Mart. Fl, Bras. vi. pt. 2, 197(1876). 

 Mr. Baker's description of this species was drawn from Schomburgk's 

 no. 353 in the herbarium of the Royal Gardens at Kew. He states 

 that the plant is an erect doubtfully perennial herb. While at the 

 Royal Botanical Museum of Berlin, the writer had an opportunity to 

 examine an authentic specimen of Caelestina repens Sch. Bip., mentioned 

 in Schomb. Fauna et Flora Guy. 1134 (1848), which proves identical 

 with Baker's species. Schultz's name, although earlier, cannot be taken 

 up, as it is accompanied by no description. It was founded on Schom- 

 burgk's no. 1188, collected on a moist savanna near the Canuku 

 Mountains, British Guiana. The specimen is more complete than the 

 one at Kew, and shows that the plant has a horizontal, evidently 

 perennial, and slightly lignescent rhizome, which roots at the nodes 

 and sends up erect subsimple stems. 



Stevia simulans, n. sp., herbacea perennis fere a basi pauciramea 

 erecta ; caule et ramis simplicibus teretibus purpureis foliosissimis 

 3-3.5 dm. altis in summa parte glanduloso-puberulis ; foliis linearibus 

 crassiusculis firmiusculis 3-5-nerviis glabris 2.8-3.5 cm. longis 2-5 mm. 

 latis utrinque glanduloso-punctatis obtusiusculis ascendentibus ; capi- 

 tulis paucis corymbosis saepius longe rigidiuscule pedicellatis ca. 

 1.3 cm. altis 13-floris; involucri squamis lanceolati-oblongis 9 mm. 

 longis atropurpureis glanduloso-puberulis vix nervosis ; corollis laete 

 purpureis 7-9 mm. longis, tubo proprio externe glanduloso-puberulo 

 modice et gradatim in fauces longiusculos ampliato, dentibus limbi 

 anguste oblongis acutis patentibus vel recurvatis ; styli ramis planis ; 

 achaeniis 5 mm. longis 10-costatis subteretibus puberulis ; pappo 

 duplici e squamis 5 brevibus hyalinis apice rotundatis et aristis 5 atro- 

 purpureis 5 mm. longis erectis scabriusculis composito. — On the mesa 

 de la Sandia, Durango, Mexico, alt. 3050 m., 14 Oct., 1905, C. G. 

 Pringle, n. 10,144 (type, in hb. Gray). This species possesses a very 

 close habital similarity to S. Pringlei Wats., but may be readily 

 distinguished by its copious glandular indumentum and especially 



