Polygala conzattii Rose

Polygala conzattii Rose, Contr. U. S. Nat Herb. 13: 307. 1911.
Stems 4 dm. long or more, slender, green, incurved-pubescent, sparsely branched above; leaves ovate-oval or obovate, 13-17 mm. long, 5.5-9 mm. wide, cuspidate at the truncaterounded apex or rarely retuse, cuneate at base, sparsely incurved-puberulous both sides; peduncles 5-8 mm. long; racemes very loose, 1.8-20 cm. long; bracts ovate, herbaceous, acuminate, reflexed, persistent, 1.5-2.5 mm. long; pedicels deflexed in fruit, 2.5-4 mm. long; flowers rosy-purple, the keel yellow-tipped; upper sepal ovate, mucronulate, with herbaceous center and petaloid margin, glabrous, persistent, 3.2 mm. long; lower sepals petaloid, obovate, obscurely emarginulate at the truncate-rounded apex, glabrous, deciduous, 3.8 mm. long; wings obovate, 4.5 mm. long, 2.5 mm. wide, bluntly emarginate, cuneate at base, glabrous; keel 3 mm. long; capsule quadrate-orbicular, narrowly erose-margined especially toward apex, compressed, sparsely incurved-pubescent near apex, 3.2-3.5 mm. long, 3-3.2 mm. wide; seed pilose,
2.6 mm. long; aril 1.4 mm. long, glabrous, with rather large corneous umbo, the two oblong scarious lateral lobes appressed.
Type locality: Cerro San Antonio. Oaxaca, altitude 1800 meters. Distribution: Known only from the type locality.