Blake Revision of Polygala 59 



mm. wide, on petioles about 0.5 mm. long or less. Flowers mostly 

 in 1 -flowered axillary or terminal racemes, purplish-yellowish, 5-6 

 mm. long. Sepals oblong, acute, 5-nerved, incurved-spreading- 

 puberulous, 4-4.8 mm. long, the upper the longer. Wings oval- 

 obovate, rounded to truncate at apex, short-clawed, yellowish more 

 or less suffused with purple, 5-veined, incurved-spreading-puberu- 

 lous, 6 mm. long, 4 mm. wide. Keel greenish-yellow, somewhat 

 purplish-tinged, 4.5 mm. long, with two rounded yellowish lateral 

 lobes. Upper petals obovate-oblong, united to staminal tube for 

 2/5 their length, 4.5 mm. long. Capsule elliptic, slightly narrowed 

 upwardly, scarcely emarginate, narrowly margined, ciliate, gla- 

 brous on sides, 4.8 mm. long, 3.9 mm. wide. Seed obconic-obovoid, 

 silky-pilose, 3.5-3.8 mm. long. Aril 1.3-1.5 mm. deep, with small 

 corneous umbo and two oblong oblique not closely appressed 

 scarious lateral lobes more or less notched at apex. Brandeg. ! 

 Univ. Calif. Pub. Bot. iv. 273 (1912). Puebla: mountains north 

 of Tehuacan, Sept. 1911, Purpus 5706 (type coll.: BG); Tehua- 

 can, June 1912, Purpus 5851 (BG). T. 2. Fig. 44. 



Subgenus IV. HEBECLADA (Chod.), comb. nov. 



Sepals herbaceous, generally glandular-ciliate, the two lower 

 united nearly or quite to apex, all persistent. Wings petaloid, per- 

 sistent, oval or orbicular. Keel crestless, beakless, obtuse, about 

 equal to wings. Upper petals shorter than keel, united to the 

 staminal tube toward the base. Filaments united for more than 

 half their length. Style much longer than ovary, bent upward; 

 upper stigmatic lobe obtuse, terminating style, the lower approxi- 

 mate, represented by a tuft of hairs. Capsule herbaceous, ciliate 

 or glabrous. Seeds pubescent, often silky. Aril generally corneous, 

 vaulted, scarcely lobed. Polygala L. sect. Hebeclada Chod. 

 Arch. Sci. Phys. Nat. Geneve xxv. 698 (1891) ; Monog. ii. 43 (1893). 

 Polygala sect. Syngala Gris. Fl. Br. W. I. 28 (1859), in part. 

 Polygala sect. B. A. W. Bennett, Journ. Bot. xvii. 141 (1879). 



a. Wings 7.5-14 mm. broad Sect. 1. Apopetala. 



a. Wings 5.3 mm. broad or less Sect. 2. Adenotricha, p. 63. 



Sect. 1. Apopetala, sect. nov. Sepala densissime ciliata vel in 

 margine subglabra pilis saepissime eglandulosis ; flores magni alis 

 7.5-14 mm. latis; frutices foliis magnis ovatis petiolatis. Species 

 typica P. apopetala Brandegee. 



