Blake Revision of Polygala 77 



lower similar, elliptic, acutish, 2.2 mm. long. Wings oval-obovate, 

 truncate-rounded at apex, cuneate at base, glabrous, sparsely 

 veined, the veins free, 4 mm. long, 2.2 mm. wide. Keel saccate 

 toward middle, 3.5 mm. long, the saccate portion greenish; rostrum 

 blunt, 0.7 mm. long. Upper petals rather broadly oblong-obovate, 

 unequally 2-4-lobed at apex, nearly equalling keel. Capsule ob- 

 long, glabrous or sparsely puberulous toward apex, narrowly erose- 

 winged, 2.8 mm. long, 2 mm. wide. Seed sericeous, 2.3 mm. long. 

 Aril 0.8 mm. long, the lateral lobes oblong, the dorsal very short, 

 appressed. Brandeg.! Univ. Calif. Pub. Bot. iv. 183 (1 July 

 1911). P. minutifolia Rose! Contr. U. S. Nat. Herb. xiii. 307 (11 

 Apr. 1911). Coahuila: Sierra de la Paila, Oct. 1910, Purpus 

 4762 (type coll. of P. nudata: BG). Nuevo Leon: dry limestone 

 cliffs of the Sierra Madre near Monterey, 10 July 1907, Pringle 

 13949 (type coll. of P. minutifolia: G). In accordance with the 

 International Rules (Art. 36), I have felt it necessary to adopt for 

 this species the slightly later name P. nudata, as being the first to 

 be published with a Latin diagnosis. 



Subsect. B. Pantomone, subsect. nov. Sepala ut alae persistentia. 

 Species unica P. desertorum Brandegee. 



96. P. desertorum Brandegee. Frutescent, several-many- 

 stemmed, 2.5 dm. high, the stems erect, subsimple or branched, 

 sparsely strigillose. Leaves linear to linear-lanceolate, acute, mu- 

 cronulate (or the lowest linear-obovate, obtuse), sparsely ciliate 

 and appressed-pubescent, sessile, firm, with obscure lateral nerves, 

 slightly involute, 9-18 mm. long, 1-1.5 mm. wide, the lowest and 

 uppermost smaller. Racemes terminating stem and branches, 

 loose, 5-9 cm. long, 5-14-flowered, straightish. Flowers 8-8.5 mm. 

 long, purple and yellow. Upper sepal oblong-oval, obtuse, gla- 

 brous, veiny, slightly saccate at base, 7.5 mm. long; the lower 

 elliptic, 5 mm. long; all persistent in fruit. Wings purple, oblong- 

 obovate, glabrous, veiny, barely mucronulate at the rounded apex, 

 appearing apiculate by the inflexing of the sides, not clawed, 8 mm. 

 long, 3.4 mm. wide, persistent. Keel yellow, with saccate tip, 8.5 

 mm. long, its blunt slightly decurved beak 2.2 mm. long. Upper 

 petals purple, porrect, ciliate below, 8.5 mm. long. Capsule oval- 

 oblong, emarginate, very narrowly margined, scarcely striate, cune- 

 ate-stiped (stipe 1 mm. long), glabrous, 5-5.5 mm. long, 2.5-4 mm. 

 wide. Seed subsilky-pilose, 3.3-3.5 mm. long. Aril corneous, 



