About Sprengelia monticola (DC.) Druce
Sprengelia monticola, also known as rock sprengelia, is an open or low-lying, hairless glabrous shrub that usually grows between 20 and 50 cm, or 7.9 and 19.7 inches, tall. Its leaves range from egg-shaped to lance-shaped, are 3.0–8.5 mm, 0.12–0.33 in, long and 1.5–2.5 mm, 0.059–0.098 in, wide, and end in a small sharp point. Flowers are arranged individually in leaf axils, with tapering, egg-shaped bracts at their base. The sepals are triangular to egg-shaped, measuring about 7 mm, 0.28 in, long. The petals are white; they are sometimes fused at the base to form a tube 0.2–0.3 mm, 0.0079–0.0118 in, long, with petal lobes 8–9 mm, 0.31–0.35 in, long. Flowering takes place from September to December, and the fruit is a capsule about 2 mm, 0.079 in, in diameter. This species grows on wet sandstone rocks and cliff ledges in the Blue Mountains of eastern New South Wales, where it often occurs alongside other typical cliff ledge vegetation including king fern (Todea barbara) and Dracophyllum secundum.
