32. Sphagnum portoricense Hampe 异叶泥炭藓 yi-ye ni-tan xian
Linnaea 25: 359. 1852. Type. Puerto Rico.
grayish green, or yellow above, brownish orange below, in beautiful shiny tufts. Stem cortex
in 3–4 layers, hyaline cells with delicate fibrils, each cell with 1–3 large pores; central cylinder brownish. Stem leaves
1.0–1.2 mm × 1.0–1.1 mm, broadly lingulate with a broad apex; margins borders hyaline, differentiated, sometimes with fringed fibrils across the apex; hyaline cells mostly divided, often without fibrils, or with fibrils only in the upper cells. Branches in fascicles of 4–5, with 2–3 spreading. Branch leaves 2.5–3.5 mm × 2.0–2.5 mm, broadly ovate, strongly concave, narrowed at base, margins involute and hyaline, cucullate-concave and sometimes fringed and dorsally roughened at the apex; hyaline cells with large, rounded pores on the ventral surface, with numerous, half-circular pores at the opposite ends along commissural rows and membrane pleats in the upper cells on the dorsal surface; green cells in cross section rather large, nearly equilateral-triangular, exposed on the ventral surface. Dioicous. Sporophytes not seen.