This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol2", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
A low glabrous depressed straggling branched shrub, with small linear-oblong petioled obtuse entire coriaceous and evergreen leaves, and small solitary or few flowers on terminal erect pedicels, the bud-scales few, persistent. Calyx 5-parted, the segments ovate-lanceolate, persistent. Corolla broadly campanulate, with 5 obtuse imbricated lobes. Stamens 5, included; filaments slender, adnate to the corolla; anthers globose-didymous, dorsally attached to the filaments, longitudinally dehiscent. Disk obscurely 5-lobed. Ovary globose, 2-3-celled; style short straight; stigma capitate; ovules numerous. Capsule subglobose, 2-3-celled, septicidally 2-3-valved, the valves 2-cleft. Seeds ovoid, the testa granular. [Greek, ground cistus.]
A monotypic genus of the colder parts of the northern hemisphere.
Azalea procumbens L. Sp. Pl. 151. 1753.
C. serpyllifolia S. F. Gray, Bot. Arr. Brit. Pl. 2: 401. 1821.
Chamaecistus procumbens Kuntze, Rev. Gen. Pl. 388. 1891.
Tufted, much branched, diffuse, branches 2-4' long. Leaves mostly opposite, rather crowded, dark green above, paler beneath, 2."-4" long, the midrib very prominent, on the lower side, the margins strongly revolute; petioles i" long or less; flowers 1-5 from terminal coriaceous buds; pedicels 3"-4" long; corolla pink or white, about 2" high, longer than the purplish sepals; capsule about 1" thick.