This type of stele was present in the earliest known vascular plants , such as rhynia 这种中柱类型存在于象莱尼蕨这样一些著名的原始维管植物中。
Devonian fossil plant considered one of the earliest forms of vascular land plants ; similar to genus rhynia but smaller 被认为是有脉管的陆地植物的最初形式之一的泥盆纪化石植物;与鹿角蕨属相似,较小。