Bryophytes that prefer dark and damp places find them suitable for flourishing.

耐阴喜湿的苔藓在这里找到适合的生长环境。

We don't taxonomise lower plants into one category, like bryophytes, based on their method of reproduction.

我们并不根据低的繁殖方式将它们分为 “苔藓门” 这样的类别。

You see, bryophytes were the first plants to start growing on land instead of in water.

苔藓是第一批在陆地上而不是水中生长的。

So they developed root-like structures called rhizoids, and leaf-like structures called phyllids, which bryophytes still have today.

所以它们进化出了像根一样的结构，被称为类根，和像叶一样的结构，被称为 phyllids，苔藓至今有这种结构。

Even with lichens removed, bryophytes is a busy realm, with over ten thousand species contained within some seven hundred genera.

即使不算地衣，苔藓是个兴旺的王国，有700个属，1万多个种。

And is there any being in the plant kingdom that embodies touch more than moss and its family, the bryophytes?

而王国中难道还有比藓类及其亲族苔藓更能体现触碰的存在吗？

The most common types of bryophytes are mosses, with about twelve thousand species.

苔藓最常见的类型是苔藓，有 12000 种。

But in order for bryophytes to survive on land, they needed to evolve ways to stay hydrated in the dry air.

但为了让苔藓在陆地上生存，它们需要进化出在干燥空气中保持水分的方法。

And while bryophytes are diverse, they do all have some things in common.

虽然苔藓种类繁多，但它们确实有一些共同点。

Let's be real, I could spend all day on mosses — but they are just the first stop on our bryophyte journey.

说实话，我可以在讲苔藓上花上一整天，但它们只是我们苔藓之旅的第一站。

We know from fossilized spores that bryophytes have existed for around 500 million years.

我们从孢子化石中得知苔藓已经存在了 5 亿年。

And then there are hornworts, the rarest bryophyte — with only a couple hundred species that typically live in the tropics.

然后是角苔——最稀有的苔藓，只有几百种，通常生活在热带地区。

They reproduce via spores, like the bryophytes, rather than seeds, which developed even later.

它们通过孢子繁殖，就像苔藓一样，而不是更晚才发展起来的种子。

Let's start with the bryophytes, which occupy the lowest branch.

让我们从苔藓开始，它们占据了最低的树枝。

Next time, we'll be using these tools to uncover the history of plants, starting with bryophytes and seedless vascular plants, some of the earliest plants on Earth.

下节课，我们将用这些工具来揭开的历史，从苔藓和无籽维管开始，它们是地球上最早的。

And despite having no formal training in botany, Hofmeister's observations through his trusty microscope led him to discover a whole bryophyte life cycle.

尽管没有接受过学方面的正式培训，但霍夫迈斯特通过他信赖的显微镜进行的观察使他发现了苔藓的整个生命周期。

Like, they all create spores, single cells coated in a super tough, armor-like molecule that are an integral part of the bryophyte life cycle.

比如，它们都会产生孢子，单细胞被一层超级坚硬的盔甲状分子包裹，这是苔藓生命周期中不可或缺的一部分。

This might make it tempting to say that bryophytes are " less evolved" than the flowering plants, the highest branch.

这可能会让人忍不住说苔藓比开花“进化得更慢”，开花是最高的分支。

As you can tell, bryophytes and seedless vascular plants are not simply low-to-the-ground lurkers.

正如你所知，苔藓和无籽维管并不是简单的地下潜伏者。

We're talking bryophytes and seedless vascular plants, the categories that include mosses and ferns, liverworts, and more.

我们说的是苔藓和无籽维管，这类包括苔藓、蕨类、苔类。