• Reproductive performance is known to differ between co‐sexual and non‐co‐sexual species. Thus, our aim was to determine whether: (i) the distance between sex structures is negatively associated with sex expression; (ii) male gametangia take longer to mature in rhizautoicous species than in gonioautoicous species; and (iii) the gonioautoicous sexual system has greater reproductive success (i.e. percentage of ramets with sporophyte) than the rhizautoicous sexual system.
• One population each of the mosses Fissidens scariosus and F. submarginatus , rhizautoicous and gonioautoicous, respectively, in a remnant of Atlantic Forest in Brazil were sampled monthly from September 2016 until August 2017. The number and phenophases of antheridia, archegonia and sporophytes were analysed for each species. Sexual expression and reproductive success were calculated, and reproductive phenology compared across environmental variables.
• As expected, sexual expression was significantly higher for the gonioautoicous species, which produced antheridia throughout the year and archegonia over many months, while gametangia production by the rhizautoicous species occurred only during the rainy season. Mean number of gametangia per perigonium and perichaetium were slightly higher for the rhizautoicous species (6.84 antheridia; 11.38 archegonia) than for the gonioautoicous species (4.39; 7.62). Gametangia and sporophyte production in the rhizautoicous species were markedly seasonal compared to that of the gonioautoicous species, although reproductive success did not differ.
• Therefore, we infer that the rhizautoicy (i.e . a functional dioicy) promotes lower expression of gametangia compared to gonioautoicy but is more efficient and so obtains the same reproductive success.

中文翻译：

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性表达，生殖物候和生殖成功与菲斯登·赫德（Fissidens Hedw）的性系统有何关系。（菊科）？一个案例研究，比较了青苔中的两种不同性系统。

• 众所周知，同性恋和非同性恋之间的生殖能力是不同的。因此，我们的目的是确定：（i）性结构之间的距离是否与性别表达负相关；（ii）雄配子体在根茎类物种中的成熟时间比在性腺物种中更长；（iii）性腺自发性系统的生殖成功率（即带有孢子体的分株的百分比）高于根性自发性系统。
• 从2016年9月至2017年8月，每月从巴西大西洋沿岸的一片残骸中分别采集到一个寄生虫Fissidens scariosus和F. submarginatus苔藓，根瘤菌和gonioautoicous虫草的种群。每个物种。计算了性表达和生殖成功，并比较了环境变量之间的生殖物候。
• 正如预期的那样，性腺自发物种的性表达显着较高，该物种全年会产生花粉症，并在多个月内产生古菌，而根际自发物种的配子产生仅发生在雨季。根茎类物种（6.84花药； 11.38弓毛虫）的平均pergonium和pergoetium的平均数量略高于性腺种（4.39； 7.62）。尽管生殖成功没有差异，但根生性物种中的配子和孢子体的生产与季生性物种相比明显是季节性的。
• 因此，我们推断，根性（即功能性二尖瓣）与角膜自身性相比促进了较低的配子体表达，但更有效，因此获得了相同的生殖成功。