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Cave dwelling nettle discovered in China

Date:
December 28, 2012
Source:
Pensoft Publishers
Summary:
British and Chinese botanists have discovered several new species of nettles growing in the entrance caverns of caves in 0.04 to 3 percent daylight. There has been little exploration of these caves for plants but recent studies are discovering many species new to science.

Flowers of a new species from the nettle family known only from caves, Pilea cavernicola, where it grows in very low light conditions.
Credit: Alex Monro / CC-BY 3.0

South West China, Myanmar and Northern Vietnam contain one of the oldest exposed outcrops of limestone in the world. Within this area are thousands of caves and gorges. It is only recently that botanists have sought to explore the caves for plants. This exploration is yielding many new species new to science, that are known only from these habitats.

The current study was published in the open access journal PhytoKeys.

Kew botanist and nettle expert Alex Monro says, "When my Chinese colleague Wei Yi-Gang from the Guangxi Institute of Botany first mentioned cave-dwelling plants to me, I thought that he was mis-translating a Chinese word into English. When we stepped into our first cave, Yangzi cave, I was spell-bound. It had an eerie moonscape look to it and all I could see were clumps of plants in the nettle family growing in very dark condition."

The plants do not grow in complete darkness but do grow in extremely low light levels, deep within the entrance caverns of the caves (sometimes, in as little as 0.04% full sunlight). The British and Chinese authors have been collecting plants from the Nettle family in this limestone landscape for several years and have just published a paper describing three new species, one from a cave and another two from deep gorges.

The cave-dwelling nettle species in question, was found growing in two caves in the Guangxi province of China. Of the species discovered in gorges, one is known from an unusual and striking rock mineral formation called petaloid travertine. Petaloid travertine is a form of limestone deposited by mineral springs that over time forms large petals of rock, in this case clinging to the vertical walls of a gorge.

These plants are members of a genus of Nettles known as Pilea, that is believed to have over 700 species Worldwide, up to one third of which may remain undescribed.


Story Source:

The above story is based on materials provided by Pensoft Publishers. Note: Materials may be edited for content and length.


Journal Reference:

  1. Alex Monro, Y.G. Wei, C.J. Chen. Three new species of Pilea (Urticaceae) fromlimestonekarst in China. PhytoKeys, 2012; 19 (0): 51 DOI: 10.3897/phytokeys.19.3968

Cite This Page:

Pensoft Publishers. "Cave dwelling nettle discovered in China." ScienceDaily. ScienceDaily, 28 December 2012. <www.sciencedaily.com/releases/2012/12/121228133732.htm>.
Pensoft Publishers. (2012, December 28). Cave dwelling nettle discovered in China. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2012/12/121228133732.htm
Pensoft Publishers. "Cave dwelling nettle discovered in China." ScienceDaily. www.sciencedaily.com/releases/2012/12/121228133732.htm (accessed July 31, 2014).

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