Stems:
Rhizomes slender, prostrate, and branched, 0.57–0.7 mm in diameter with internodes 2.8–29.8 mm long
Roots:
One root per node.
Leaves:
Leaves simple.
Leaves opposite and subtended by two scales at each node. Scales transparent, 3.1–4.5 mm long, obovate, keeled and sparsely covered with short hairs.
Blades grass green, elliptic to oblong; 12.9–18.5 mm long, 3.8–6.3 mm wide.
Apex obtuse.
Base cuneate to obtuse.
Surfaces densely covered in minute unicellular hairs.
Margins serrulate.
Each blade with five to eight pairs of ascending non-forked cross-veins arranged alternately to sub-oppositely which join the intra-marginal veins.
Petioles short, 4.3–16 mm long, 0.3–0.51 mm in diameter.
Flowers:
Plants monoecious. One male (staminate) and one female (pistillate) flower occur at the same node enclosed by a semi-transparent spathe
Male flowers with three oblong-elliptic tepals. Female flowers lacking a perianth.
Female flowers bear three long styles atop the hypanthium connected to the ovary.
McDermid, K. J., Gregoritza, M. C., & Freshwater, D. W. (2002). A new record of a second seagrass species from the Hawaiian archipelago: Halophila decipiens Ostenfeld. Aquatic botany, 74(3), 257-262.
McDermid et al. 2002 (NEWNAT/Mi, O, H, DESCR); Wagner et al. 2005— (accessed Feb 2019;status change from “nat” to “ind”)
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