Platyloma Brotherus Plants slender to somewhat coarse, prostrate, forming loose, dark green to blackish mats with yellowish-green shoot tips.
Branch leaves similar to stem leaves, but slightly smaller and narrower.
Sexual condition autoicous. Perichaetial leaves erect, lanceolate, acuminate, serrulate, costate. Seta single, straight or flexuose, often tortuose in aquatic plants, smooth. Calyptra cucullate, smooth. Sciaromium lescurii .