Stems close-set, erect, up to 6 dm. tall, arising from rather slender branched rhizomes; bark dark brown. Branchlets quadrangular, very slender, pubescent. Lvs on slender petioles c. 1 mm. long. Lamina narrow-lanceolate to narrow ovate-lanceolate (on same plant) acuminate; (10)-15-25 × (1)-2-4 mm., glab. or nearly so, submembr., with a prominent pair of lateral veins; margins flat. Lvs at base of branchlets ± 10 × 6 mm., ovate. Racemes, sts branched, very slender, ascending to spreading, up to ± 5 cm. long, us. with a few lvs at base. Fls solitary rather distant, or 2-3 together, on filiform patent pedicels up to 5 mm. long. Sepals broad-ovate, ± 1·5 mm. long; petals similar, slightly shorter. Carpels 5-10.
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