Sphagnum sancto-josephense Crum & Crosby, Ann. Missouri Bot. Gard. 61: 904. 1974.

Plants rather slender, in soft, loose, yellow-green tufts. Young pendent branches (in the capitulum) often seeming paired; cortex of large thin-walled cells in 2 layers, without epidermal pores; wood cylinder yellowish. Stem leaves ca. 1.4 mm long, somewhat concave, oblong-ovate, acute, not noticeably erose at the tip or bordered, hyaline cells undivided, on the outer surface with fibrils and occasional end pores near the leaf tip, on the inner surface largely resorbed, near the apex with stumps of fibrils surrounding large membrane gaps. Branches in fascicles of 4–5 (2–3 spreading); cortical retort cells differentiated. Branch leaves flattened out and wavy-margined when dry, concave and 5-ranked when moist, 1.7–1.8 mm long, oblong-ovate, bordered by several rows of linear cells; hyaline cells somewhat convex on the inner surface, on the outer with 2–4 small, somewhat ringed, round or elliptic end and corner pores, on the inner surface with 4–11 large, round, thin-margined pores arranged more or less along the commissures; green cells, as seen in section, triangular, exposed on the outer surface, not reaching the inner.