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2. Phyllospadix Hooker, Fl. Bor.-Amer. 2: 171. 1838.
虾海藻属 xia hai zao shu
Rhizome monopodial, with 2 vascular bundles in cortex. Erect stems absent or strongly abbreviated, with dense, persistent fibrous leaf bases. Leaves linear, usually leathery, with 3-7 parallel veins, margin irregularly minutely denticulate; sheaths with an auricle, ligulate. Spadix axillary, sessile, axis flattened, with a row of conspicuous flaplike projections (retinacula) on each side of axis. Plants dioecious; flowers unisexual, small. Anthers 2-celled. Female flowers consisting of 1 carpel, often with staminode; style short; stigmas 2, capillary. Fruit curved, with a short beak.
About five species: widely distributed along shores of the N Pacific Ocean; two species in China.
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Leaves 1.5-2.5 mm wide, apex usually retuse, 3-veined; persistent fibrous leaf bases blackish brown. |
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1 P. japonicus |
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Leaves 2-4.5 mm wide, apex obtuse, 5-veined (rarely 3-veined); persistent fibrous leaf bases reddish brown. |
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2 P. iwatensis |
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Lower Taxa
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Treatments in Other Floras @ www.efloras.org
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