. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. ft §2 © 4 las 1. Blade siphons. 2. Lateral appendages of blade. 3. Habit of plant. Udotea wilsonii A. Gepp, Gepp & Howe in A- Gepp & Gepp 1911: 130-131,144, pi. VII, fig. 66; pi. VIII, figs. 67,67a, 68,68a. [as U. wilsoni] Thallus of multiple fan shaped blades radiating from central axis (rarely as single flat blade), lightly calcified; to 13 cm tall; dark gray-green; blade wider (10 cm) than long (8 cm), thin (1-2 mm); cortex incomplete; zonation faint; stipe 1-2 mm diam., l-2(-4) cm long; r
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. ft §2 © 4 las 1. Blade siphons. 2. Lateral appendages of blade. 3. Habit of plant. Udotea wilsonii A. Gepp, Gepp & Howe in A- Gepp & Gepp 1911: 130-131,144, pi. VII, fig. 66; pi. VIII, figs. 67,67a, 68,68a. [as U. wilsoni] Thallus of multiple fan shaped blades radiating from central axis (rarely as single flat blade), lightly calcified; to 13 cm tall; dark gray-green; blade wider (10 cm) than long (8 cm), thin (1-2 mm); cortex incomplete; zonation faint; stipe 1-2 mm diam., l-2(-4) cm long; rhizoids entangled, fine, fibrous. Blade siphons 40-80 jum diam., constrictions above dichotomies rare, asymmetrical when present; lateral appendages short, knobby, blunt, simple, or forked, 25-90(-120) /urn long, in 2-4 vertical rows becoming obscure with age; stipe appendages short, dichotomously branched, apices knobby. Fracture zone specimen: Bottom of east fracture, 7 m deep on mangrove peat, , D&M Littler 25118 (US).. 1. Cross section at whorl of branchlets. 2. Fertile branchlet with solitary, spherical sporangia. 3. Habit of plant. Dasycladaceae, Dasycladales *Dasycladus vermicularis (Scopoli) Krasser in Beck & Zahlbruckner 1898: 5, fig. 8. Spongia vermicularis Scopoli 1772:412, pi. 64, fig. 1454. Thallus fuzzy, soft, individuals cylindrical, gregarious; 5-8 mm diam., to 6 cm tall; green; main axis whorled with tightly packed, forked branchlets; stipe short, naked; holdfast of short lobes. Branches in whorls from central axis, 10-15 per whorl; branch basal cell large, capped with 3-4 branchlets, these capped with 3 spine-like branchlets; sporangia 1 per branch, spherical, bright yellow-green, in axis of branchlets. Fracture zone specimens: Seagrass bed of east fracture, 3 m deep on mangrove peat, , D&M Littler 25100 (US). Seagrass bed of central fracture, 3 m deep on mangrove peat, , D&M Littler 25032 (US). Seagrass bed of w
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