All Floras      Advanced Search
FOC Vol. 23 Page 106, 107, 108 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 23 | Zosteraceae

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.

1 Leaves 1.5-2.5 mm wide, apex usually retuse, 3-veined; persistent fibrous leaf bases blackish brown.   1 P. japonicus
+ Leaves 2-4.5 mm wide, apex obtuse, 5-veined (rarely 3-veined); persistent fibrous leaf bases reddish brown.   2 P. iwatensis

Lower Taxa


Related Objects  
  • Phyllospadix (PDF)
  • PDF

    Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |