J. Hattori Bot. Lab.44: 351. 1978
Etymology: For Zennoske Iwatsuki, b. 1929, Japanese bryologist, and Latin -ella, diminutive
Found in FNA Volume 28. Treatment on page 367. Mentioned on page 366, 645.
Plants in prostrate mats, yellowish. Stems freely branched; paraphyllia absent. Leaves appressed, imbricate, suborbicular to ovate-lanceolate; margins plane to recurved, entire; apex long-piliferous; ecostate or occasionally costa double, short; alar cells not differentiated; medial laminal cells rhombic to elliptic, smooth, walls thick. Capsule erect, oblong-cylindric, symmetric.
nw North America, Europe, Asia.
Sporophytes of Iwatsukiella are rare in North America.