Humile glaberrimum; rami radicantes elongati (vel in florem solitarium terminantes et ex axillo altero ramulus elongatus, ex axillo altero ramulus brevis floriferus, producti), ad 30 cm. longi vel ultra, ad 3 mm. diam., 2-angulati, angulis breviter alatis, cuticula viridi demum cinerea; ramuli floriferi 4-6-foliati, cum floribus 3-natis ad 3.5 cm. longi; folia fere erecta vel primaria patenti-curvata itaque in ramis prostratis quasi erecta, angulis acutis, supra plana, latere altero leviter convexo, lateraliter visa intedum superne parum ampliata, sat abrupta acuta, apiculata, viridia levissima, ad 2 cm. longa, ad 5 mm. lata diametroque; flores diurni, ad 2.3 cm. diam., pedunculi compressi, floris solitarii ad 1.5 cm., floris intermedii cymae 5-8 mm. longi, laterales parum longiores, medio bracteati, bracteis 1 cm. longis; receptaculum brevissime turbinatum, 2-carinatum, apice 8 mm. diam.; sepala 5, 2 subaequilonga, 9 mm., vel post anthesin ad 1.1 cm., longa, 3 breviora 5-6 mm. longa; petala 2-seriata nivea, extima subspathulata, 1 cm. louga, fere ad 2 mm. lata; staminodia nivea, ad 5 mm. longa; filameoita ad 3 mm. louga, prope medium papillata, antheris luteis; glandulae subapproximatae; ovarium supra 5-lobum, lobis obtusis approximatis; stigmata 5 subulata acuminata, fere ad 3 mm. longa.
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Perennial, mat-forming, dwarf shrublet, up to 0.15 m high, branches up to 0.35 m long, sometimes rooting at nodes. Leaves 3-angled upper surface flat, epidermis very smooth, apex acute to recurved. Flowers 1-3, white. Flowering time spring to late summer. Capsules very pale brown to grey, 5-locular, closing bodies absent, covering membranes reduced to a narrow ledge, valve wings twice as broad as expanding keels.
Plants sprawling or prostrate. Creeping, succulent perennial, with 2-angled stems to 30 cm. Leaves suberect, apiculate, acute. Flowers in threes on pedicels to 15 mm long, white, to 25 mm diam. Fruits 5-locular, 5-6 mm diam.