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 Sais 
1911). P. minutifolia Rose! Contr. U.S. Nat. Herb. xiii. 307 (11 
Apr. 1911). — Coanuma: Sierra de la Paila, Oct. 1910, Purpus 
4762 (TYPE COLL. of P. nudata: BG). Nurvo 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. Pant , subsect. nov. Sepala ut alae persistentia. 
Species unica P. desertorum Brandegee. 
96. P. pesERTORUM 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 em. 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, 
