T: USA, California, Mariposa Co., Yosemite Falls, Jun 1881, C.C.Parry; holo: US; iso: DS, F, ISC, MO, NY.
Annuals, 0.9–5.5 (–6) cm tall. Stem erect, leafless, 0.1–0.3 mm thick; basal leaves to 2.2 cm long. Flowers 1–2 (–3), dimerous or trimerous; bracts 2–4, ovate, acute, usually reddish-brown below, (0.4–) 0.8–1.5 mm long, rarely tepaloid to 2.5 mm long; pedicels 0.3–0.6 mm long. Tepals acuminate to attenuate, (1.3–) 1.8–2.8 mm long, 0.4–0.6 mm wide, with inner to 0.5 mm longer than outer especially at anthesis; central band dark reddish to black at least at the top and sides, sometimes almost throughout. Stamens 2–3, 0.9–1.5 mm long; anthers 0.3–0.4 mm long, c. 1/2 filament length; style 0.1–0.3 mm long; stigmas 0.4–0.6 mm long. Capsule globose to obovoid (-ellipsoid), (1–) 1.2–2 (–2.2) mm long, usually 1/2–3/4 tepal length (sometimes equal, rarely slightly longer by 0.2 mm), most often remaining pale greenish with a dark red or black apex, sometimes gradually turning dark red throughout. Seeds 2–3 per row and 4–9 per capsule, elliptic-ovoid, 0.5–0.8 mm long, often both slightly apiculate and umbonulate, faintly ridged. 2n = 36, fide B.J.Ertter, Mem. New York Bot. Gard. 39: 27 (1986).