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FNA | Family List | FNA Vol. 27 | Funariaceae | Entosthodon

6. Entosthodon sonorae (Cardot) Steere, Bryologist. 41: 39. 1938.

Funaria sonorae Cardot, Rev. Bryol. 36: 110. 1909; Entosthodon bartramii Grout

Plants 2-4 mm, pale yellow green. Leaves variously contorted when dry, ovate to oblong to obovate, imbricate, somewhat concave, mostly 1.5-2 mm; margins serrulate by projecting ends of thin-walled cells; apices acute, terminating in a 1-2-celled apiculus, costa ending 7-10 cells before the apiculus; basal laminal cells rectangular (50-70 × 18-25 µm), distal cells irregularly short- to oblong-rectangular, somewhat inflated marginally. Seta pale yellow, 4-5 mm, straight, not hygroscopic. Capsule yellow, elongate-cylindrical from a neck half or more the total length, 2.5-3 mm, weakly sulcate when dry and empty; exothecial cells scarcely thickened, narrowly oblong (3-4:1) near the mouth and transversely elongate in 4-6 rows proximal to the mouth; operculum conic-rounded; peristome pale brownish yellow, lanceolate with thin trabeculae proximally and terminating in a 1-2-celled hyaline evanescent tip, striate basally and nearly smooth at the tips, endostome not seen. Calyptra cucullate, long-beaked, inflated around the capsule, large, smooth. Spores 18-25 µm, smooth.

Mineral soils, probably in shade of rocks or in crevices; moderate to high elevations; Ariz.; Mexico (Sonora).

Enthosthodon sonorae is restricted to the Sonoran Region of southwestern United States and northern Mexico.


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