Blake Revision of Polygala 47 



mm. longae 2.5 mm. latae. Carina virescens 3.2-3.5 mm. longa. 

 Petala superiora oblonga 3.3 mm. longa. Capsula submatura ellip- 

 tica basi paullulum angustata sublate emarginata ciliolata et sub- 

 dense puberula pilis brevibus subincurvis 9.5 mm. longa 6.5 mm. 

 lata, vallecula ad 1 mm. alta 1 mm. dimetente. Semen non vidi. 

 Hidalgo: Zimapan, Coulter 732 p. p. (type: K, fragm. G). 



56. P. Americana Mill. Fruticulose, erect, several-stemmed, 

 about 1.2 dm. high. Stems simple or branched, slightly flexuose, 

 densely pubescent with incurved-spreading rather short equal hairs. 

 Leaves ovate to obovate, acute or the lower rounded at apex, acute 

 at base, mucronulate, firm but rather thin, with about 2 pairs of 

 lateral nerves, somewhat reticulate, rather densely pubescent both 

 sides with incurved-spreading hairs, 1.4-2.3 cm. long, 8-11 mm. 

 wide, on incurved-spreading petioles 1 mm. long; those of the 

 branches sometimes much reduced. Racemes rather loosely 

 flowered, 1.2-4 cm. long. Flowers " purplish." Sepals lanceolate 

 or oblong-lanceolate, rather densely incurved-spreading-pubescent, 

 4-4.5 mm. long. Wings elliptic, obtuse, rather densely pubescent 

 all over outside with longish incurved-spreading hairs, 5-7 mm. 

 long, 3-4 mm. wide. Keel glabrous, 5 mm. long. Upper petals 

 spatulate-obovate, ciliate below. Capsule (immature) elliptic, 

 emarginate, reticulate, densely pubescent with straightish patent 

 hairs, 6 mm. long, 5.3 mm. wide, on a spreading-pilosulous pedicel 

 1.8-3 mm. long. Seed not seen. Mill.! Gardn. Diet. VIII. ed. 

 no. 7 (1768); not of other authors. Vera Cruz: 1731, Houston 

 (types: B, tracing G). Wrongly described by Miller as possess- 

 ing cristate flowers. 



57. P. hebantha Benth. SurTruticulose at base, erect, 1.5-2.5 

 dm. high, few-stemmed, the stems simple or slightly branched, 

 densely pubescent with subincurved-spreading shorter hairs mixed 

 with longer spreading hairs. Lower leaves oval or elliptic, rounded 

 or obtuse at apex, mucronulate, at base broadly cuneate, thinnish, 

 with 3-6 pairs of lateral nerves, somewhat reticulate, subsparsely 

 pubescent with shorter and longer incurved hairs, 1.8-3 cm. long, 

 1-2.2 cm. wide; middle and upper larger, oval to ovate, acute, 2.5- 

 5.5 cm. long, 1.1-3.2 cm. wide, on petioles 1.5-2 mm. long. Ra- 

 cemes rather loosely flowered, 2-4 cm. long. Flowers apparently 

 ochroleucous. Sepals lanceolate, acuminate, pubescent with sub- 

 spreading hairs, 2 mm. long. Wings narrowly oblong, obtuse, pu- 



