Glandleaf Milkwort

Polygala macradenia A. Gray, PI Wright. 1: 39. 1852.
Polygala macradenia genuina Blake, Contr. Gray Herb. 47: 56. 1916.
Stems very numerous, 3.5-21 cm. long, crowded, erectish or ascending, fruticulose below, from a thick woody root, flexuous, densely leafy, densely and canescently incurvedor incurvedspreading-puberulous ; leaves linear-oblong or oblong-lanceolate, 2-6.3 mm. long, 0.6-1.3 mm. wide, obtuse, rounded at base, flattened above, thick, densely and canescently puberulous, thickly gland-dotted; racemes 1-2-flowered ; flowers purple; sepals oblong-ovate, obtuse, pilosulous and gland-dotted, 1.7-2.1 mm. long; wings obovate, 5-5.5 mm. long, 2.5 mm. wide, rounded at apex, cuneate at base, sparsely spreading-puberulous, ciliolate, purple; keel 4.5 mm. long; capsule oblong to oblong-ovate, canescently incurved-puberulous and gland-dotted, 5-5.5 mm. long; seed silky-pilose, comose at apex, 4 mm. long; aril 1.2-1.6 mm. high, with corneous vaulted sparsely pubescent umbo 0.9-1.1 mm. high, and three short descending scarious-ended subappressed lobes.
Type locality: Hills at the head of the San Felipe River, Texas.
Distribution: Texas to Arizona, and southward to Coahuila.

Hebecarpa macradenia, synonym Polygala macradenia, the glandleaf milkwort, is a subshrub in the milkwort family (Polygalaceae) found in the Arizona Uplands of the Sonoran Desert.: 117  Its "odd" flowers are said to be "spectacularly beautiful" when viewed with a hand lens.: 117