Chylocladia wynnei sp nov (Champiaceae, Rhodophyta) from the Mediterranean Sea
Chylocladia wynnei sp nov (Champiaceae, Rhodophyta) from the Mediterranean Sea
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DOI：
10.1515/bot.2008.024
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发表时间：
2008-01-01
期刊：
影响因子：
2.2
通讯作者：
Furnari, Giovanni
中科院分区：
文献类型：
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作者：
Alongi, Giuseppina;Cormaci, Mario;Furnari, Giovanni
一个新种，Chylocladia wynnei sp。 11月，是从地中海描述的。它由 2-4 个圆柱体、不分枝的直立轴组成，高 5-10(-13) 毫米，由盘状固着器产生。轴被厚厚的粘液层覆盖，整个轴是空心的。它们被单层隔膜分成几段，并在隔膜处收缩。轴有单层皮层和内表面衬里的纵向细丝；腺细胞从这些细丝上被切断。配子体植物是雌雄异体的，仅由两个部分组成。雄性叶体在位于两节之间的浅囊中具有精囊。基节远端生一或二个球形无柄囊果皮。四孢子植物由 4-5 个节组成；四面体分裂的四孢子囊散布在整个叶状体中。这些孢子囊由较大的皮质细胞转化而来，成熟时，它们伸入叶状体腔。矮小的身材和覆盖着厚厚的粘液层的不分枝的直立轴清楚地将 C. wynnei 与之前描述的 Chylocladia 物种区分开来。
A new species, Chylocladia wynnei sp. nov., is described from the Mediterranean Sea. It consists of 2-4 terete, unbranched erect axes, 5-10(-13) mm high, arising from a discoid holdfast. Axes, covered by a thick mucilaginous layer, are hollow throughout. They are divided into segments by monostromatic diaphragms and are constricted at the diaphragms. Axes have a unilayered cortex and longitudinal filaments lining their inner surface; gland cells are cut off from these filaments. Gametophytic plants are dioecious and consist of only two segments. Male thalli have spermatangia in superficial sori located between the two segments. One or two spherical sessile cystocarps are borne on the distal part of the basal segment. Tetrasporic plants comprise 4-5 segments; tetrahedrally divided tetrasporangia are scattered throughout the thallus. These sporangia are transformed from larger cortical cells and, when mature, they protrude into the thallus cavity. Diminutive stature and unbranched erect axes covered with a thick mucilaginous layer clearly distinguish C. wynnei from previously described species of Chylocladia.