1428 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 



viscid and sparsely puberulous; flowers white; achene finely hispidulous; pappus 

 usually of awns and squamellae, rarely of squamellae only. "Hierba del aire" 

 (Hidalgo, Villada). 

 14a. Stevia salicifolia nana A. Gray, Proc. Amer. Acad. 15: 25. 1879. 



San Luis Potosi. A dwarf viscid form, with narrowly lanceolate or oblan- 

 ceolate, sometimes obtuse leaves only 2 to 3.3 cm. long and 2 to 7 mm. wide. 

 It makes a near approach to the closely related Stevia stenophylla A. Gray. 



15. Stevia seleriana Robinson, Proc. Amer. Acad. 35: 327. 1900. 



Known only from the type locality, in mountain woods between San Carlos 

 and Santo Bartolo, Yautepec, Morelos. 



Stoutish shrub, white-lanate in youth, soon arachnoid, finally glabrate; leaves 

 opposite, on petioles 1.8 cm. long, the blades oblong, 8 to 10 cm. long, 2.3 to 3 

 cm. wide, crenate, subentire toward the acutish apex, glabrous; panicle 4 cm. 

 wide; involucre 5 to 6 mm. long; flowers apparently white; pappus squamellate. 



16. Stevia microchaeta Schultz Bip. Linnaea 25: 291. 1852. 

 Known only from the type locality, near Oaxaca. 



Suffruticulose, somewhat viscous, villous-pubescent above; leaves opposite, 

 lanceolate, 7.5 cm. long, 12 to 14 mm. wide, acuminate at each end, subserrate; 

 panicle compact, very many-headed; involucre 6 mm. long, glabrescent or slightly 

 pubescent, the phyllaries acuminate; achene glabrous, elongate; pappus of about 

 10 narrowly linear, acute, subcaducous, entire setae about 0.3 mm. long. (De- 

 scription compiled.) 



17. Stevia pyrolaefolia Schlecht. Linnaea 16: 326. 1842. 



Known only from the type locality, "Mount Kakand6 en la Encarnaci6n," 

 Mexico. 



Fruticose, cinerascent-puberulous above; leaves opposite, petioled, ovate, 

 rarely obovate or sub.spatulate, 5 to 6.3 cm. long, 20 to 25 mm. wide, obtuse, 

 cuneate-attenuate at base, glabrous, depressed-crenate-serrate; panicles small, 

 compact; involucre 6 mm. long, the phyllaries obtuse; pappus of squamellae and 

 1 or 2 awns. (Description compiled.) 



18. Stevia lucida Lag. Gen. & Sp. Nov. 28. 1816. 



"! Stevia glutinosa oaxacana DC. Prodr. 5: 116. 1836. 



?Stevia grandidentata Schultz Bip.; Klatt, Leopoldina 20: 75. 1884. 



Stevia oaxacana Schultz Bip.; Klatt, Leopoldina 20: 75. 1884, as synonym. 



Jalisco and San Luis Potosi to Oaxaca; type from Ixmiquilpan and Zimapdn 

 ("Cimmapan"), Hidalgo. Costa Rica. 



Shrub about 1 meter high, very viscous, glabrous or puberulous in the inflor- 

 escence; leaves opposite, on petioles usually 10 to 25 mm. long, the blades lance- 

 ovate or lanceolate, sometimes ovate or oval-ovate, 3 to 10 cm. long, (0.7) 1.2 to 

 4 cm. wide, acute or acuminate, rarely obtusish, at base acute to rounded, serru- 

 late to crenate-serrate, glabrous; panicles dense, 7 cm. wide or less; involucre 5 to 

 6 mm. long, the phyllaries obtuse to acute; flowers white or purplish-tinged; 

 achene finely hispidulous; pappus of awns and squamellae, or of squamellae only. 

 "Hierba de San Marcos." 



19. Stevia connata Lag. Gen. & Sp. Nov. 27. 1816. 

 Mexico, without definite locality. 



Fruticose, 2 meters high or more, strict, glabrous; leaves opposite below, 

 alternate above, oblong-lanceolate, sessile and connate at base, serrate, very 

 acute; panicle fastigiate; flowers white; pappus of awns and squamellae. (De- 

 scription compiled.) 



