NANFA-- Re: Hornworts

Jeffrey Fullerton (
Sun, 21 Jan 2001 12:11:54 -0500

> C. demersum has dark green shots and its has more stiff and fragile stem =
> and leaves than C. submersum.
> Submersum is light green, sometimes reddish leaves, depending on the =
> light.
> Martin - Denmark.

Thanks Martin

I think this gives me an idea what I have now. demersum = the bigger
dark green and submersum = the smaller lighter plant. This concurs with
the source in Britain.
There is a third species- perhaps endemic to North America and somewhat
rare too - C, echinatum which is very small even smaller than C.
submersum. I've seen a photo years ago of all three types arranged side
by side in book from the Pet Library series on aquatic plants- but
cannot find it now. It is burried someplace in my collection of older

Since you are from Europe- do you have any experience with growing the
Water Lobelia - L. dortmanna? I've been looking for a start of this one
- or seed for years.


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