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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45895

Title: Nitophyllum hommersandii sp. nov. (Delesseriaceae, Rhodophyta) from Taiwan
Authors: Showe-Mei Lin
Suzanne Fredericq
Contributors: 國立臺灣海洋大學:海洋生物研究所
Keywords: Delesseriaceae
Calonitophyllum
Gulf of Mexico
marine algae
Nitophylleae
Nitophyllum hommersandii sp. nov
phylogeny
rbcL
Rhodophyta. systematics
Taiwan
Date: 2003
Issue Date: 2018-04-16T07:20:03Z
Publisher: European Journal of Phycology
Abstract: Abstract: A new member of the Delesseriaceae (Ceramiales, Rhodophyta) is described from Kenting National Park, southern Taiwan. On the basis of comparative vegetative and reproductive morphology, and phylogenetic analysis inferred from chloroplast- encoded rbcL sequences, we conclude that it belongs in the genus Nitophyllum, tribe Nitophylleae, subfamily Nitophylloideae. The new taxon shares the following features with the type species of Nitophyllum, N. punctatum (Stackhouse) Greville: the absence of macro- and microscopic veins; diffuse growth by marginal and intercalary multinucleate meristematic cells; discoid chloroplasts; mature procarps scattered along the thallus margin on both sides, each consisting of a supporting cell bearing a straight, 4-celled carpogonial branch flanked laterally by a cover cell and one sterile group, two connecting cells cut off from the fertilized carpogonium, an auxiliary cell cut off apically from the supporting cell and diploidized by one of two connecting cells; gonimoblasts irregularly subdichotomously branched, bearing terminal carposporangia; a persistent, distinct and uninucleate basal gonimoblast cell; cell fusions entirely absent but broadened pit plugs among gonimoblast cells; and vegetative cells flanking basal gonimoblast cell in the floor of the mature cystocarp dividing to form a rudimentary dome-shaped mount. The new species is distinguished from other members of the genus by the formation of extensive tangled mats of prostrate and overlapping decumbent blades, rhizoidal haptera borne underneath the prostrate blades and marginal rhizoidal filaments along the thallus margin; formation of multiple secondary pit connections among vegetative cells; and spermatangial sori small, numerous and scattered over the fertile blades. We herein describe Nitophyllum hommersandii sp. nov. as a new species in the genus. A comprehensive revisionary study of Nitophyllum and of the generic concepts in the Nitophylleae is recommended.
Relation: 38(2) pp.143-151
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/45895
Appears in Collections:[海洋生物研究所] 期刊論文

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