590 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Stems very numerous, 3.5 to 21 cm. long, fruticulose below, erectish or ascend- 

 ing, densely leafy, canescently puberulous ; leaves linear-oblong or oblong- 

 lanceolate, 2 to 6 mm. long, 0.6 to 1.3 mm. wide, thick, flattened above, gland- 

 dotted, canescent-puberulous ; racemes 1 or 2-flowered ; flowers purple ; wings 

 obovate, 5 to 5.5 mm. long ; capsule oblong ; aril shortly 3-lobed. 



44a. Polygala macradenia glanduloso-pilosa (Chod.) Blake, Contr. Gray 

 Herb. n. ser. 47: 56. 1916. 



Poly gala glanduloso-pilosa Chod. Bot. Jahrb. Engler 52: Beibl. 115: 72. 1914. 



San Luis Potosl 



Less pubescent; leaves linear or linear-lanceolate, 1.2 to 3 mm. long, 0.3 to 

 0.5 mm. wide, concave or sulcate above, sparsely incurved-puberulous. 



45. Polygala purpusii T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 88. 1910. 

 Known only from the type locality, Acatitlfin, Puebla. 



Fruticulose, several-stemmed, erect, 25 cm. high, densely canescent-pilosulous 

 on the younger parts ; leaves oval to oblong-oval, rarely orbicular, 9 to 14 mm. 

 long, 4 to 11 mm. wide; racemes terminal, 4.5 cm. long; wings obovate-oval, 

 4.7 mm. long ; keel whitish with yellrwish tip ; capsule suborbicular, 3 mm. 

 long; aril 1.2 mm. deep, the 2 lobes oval, appressed. 



46. Polyg-ala conzattii Rose. Contr. U. S. Nat. Herb. 13: 307. 1911. 

 Known only from the type locality, Cerro San Antonio, Oaxaca. 



Stems 40 cm. long, slender, green, incurved-pubescent ; leaves ovate-oval or 

 obovate, 15 mm. long, cuspidate at the truncate-rounded apex or retuse ; racemes 

 very loose, 1.8 to 20 cm. long; wings obovate, 4.5 mm. long; capsule quadrate- 

 orbicular, 3.5 mm. long ; aril 1.4 mm. long, with large corneous umbo, the 2 

 lateral lobes oblong, appressed. 



47. Polygala parryi A. W. Benn. Joum. Bot. Brit. & For. 17: 140. 1879. 

 San Luis Potosl. 



Suffruticulose, procumbent below, 9 cm. long or less, several-stemmed, in- 

 curved-puberulous ; leaves oval to orbicular, 6 to 11 mm. long, rounded to obtuse 

 at each end; wings obovate, 3.5 mm. long; capsule orbicular, venose, plump, 

 3.5 mm. long; aril 1.5 mm. deep, with small corneous umbo and 2 oblong 

 appressed lobes. 



48. Polygala tehuacana T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 273. 1912. 

 Known only from the vicinity of the type locality, mountains north of 



TehuacSn, Puebla. 



Suffruticulose, many-stemmed, erect, about 15 cm. high, canescent-puberulent ; 

 leaves oblong, 5 to 10 mm. long, 1.5 to 2.5 mm. wide, obtusish, puberulous ; - 

 racemes mostly 1-flowered ; flowers purplish-yellowish ; wings oval-obovate, 

 6 mm. long ; capsule oval, ciliate, 4.8 mm. long ; seed silky-pilose ; aril with 

 small umbo and 2 oblong lateral lobes. 



49. Polygala floribunda Benth. PI. Hartw. 58. 1840. 



Polygala americana floribunda Kuntze, Rev. Gen. PI. 1: 48. 1891. 



Chiapas ; type from Zonaguia. Guatemala. 



Frutescent, erect, about 1.5 meters high, incurved-pubescent or strigillose; 

 leaves ovate, 3.5 to 9 cm. long, 1.2 to 3.8 cm. wide, acute, finely reticulate, 

 strigillose or glabrate; racemes loose, up to 23 cm. long, rarely branched; 

 flowers violet-purple; wings suborbicular, 8 to 11 mm. long and wide, venose; 

 capsule transversely broad oblong, obcordate, 8 mm. long; seed globose, 3 mm. 

 thick; aril 2 mm. high, fleshy-coriaceous, not lobed. 



