Grateloupia tenuis Wang et Luan sp. nov. (Halymeniaceae, Rhodophyta): A New Species from South China Sea Based on Morphological Observation and rbcL Gene Sequences Analysis

Figure 3

Vegetative and reproductive structures of Grateloupia tenuis. (a) Cross-section of thallus displaying cortex and solid medulla when young. (b) Cortex and hollow medulla when old. (c) Internal structure of branches displaying arrangement and layers between cortex and medulla. ((d), (e)) Structure of carpogonial branch ampulla and auxiliary cell ampulla. ((f)–(i)) Successive periods of cystocarp development. (f) Initial phase of cystocarp formation. (g) Middle phase of cystocarp formation. (h) Cystocarp development. (i) Advanced stage of cystocarp development and mature cystocarps. (j) Carpospores. (k) Construction of spermatangium. (l) Mature tetrasporangium (te).

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