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Diers L.
(1980)
Kakteen und anderen Sukkulenten, 31(12):362 |
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Original description,
see above |
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Taylor N.P. (1981)
A commentary on Copiapoa , The Cactus and Succulent Journal of Great
Britain, 43(2/3):
49-60
Checklist |
|
as a still poorly known plant, probably allied to
C. humilis complex or C. hypogaea. |
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Butcher D.
(1982)
The Genus Copiapoa, Calandrinia II :11 |
|
'C. laui
Diers. Plant no.38, map 4. L 891.
Body-clumping, single stem circa 1 rarely 3 cm across, 1
to 1.5 cm high. Clear grey to red-brown-grey, sometimes greenish. Top
sunken: covered with whitish tomentum. Ribs not prominent, vertical, in
small tubercles; Spineswhitish to yellowish. About 1 mm long, thin, 4-7
radials, straight to a little curved, 2.3 either side. 0-1 centrals, :t
erect; Flower-yellow, short, wide funnel-shaped; Fruit- ca. globular, 3-5 mm
across, greenish-brown with shiny black seeds; Roots-turnip-like;
Habitat-Esmeralda. ' |
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Hoffmann A.
E. (1989)
Cactaceas en la flora silvestre de Chile: 102 - 107 |
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As Copiapoa hypogaea Ritter var. lauii
(Diers) A. Hoffmann comb.nov. |
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Meregalli M
& Doni, C (1991)
Piante Grasse Speciale - Il Genere Copiapoa |
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Schulz R. & Kapitany
A., (1996)
Copiapoa in their
Environment |
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as C. laui.
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Charles G. J., (1998)
Copiapoa
|
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As Copiapoa hypogaea Ritter var. lauii
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Hunt D.
(Ed.) (2001)
Coping with Copiapoa ,
Cactaceae Systematics Initiatives 11:
23-29 |
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5.
C. laui. Is this distinct
from C. hypogaea, or better
treated as a subspecies?
GC: I followed
Adriana Hoffmann‘s view that it is a variety of
C. hypogaea; this was supported by Roger Ferryman finding an
intermediate form at Pan de Azucar. Other than size, the two are very
alike.
FK: I do not have
a strong argument against it being a variety except that it is easily
identified just by its small size and it is the only
Copiapoa where the side branches form their own roots.
NT: I remain
convinced that C. laui is
close to C. hypogaea, but
whether you lump them (as subspp.) or not is a matter of choice.
However, it is important to be aware that at Pan de Azucar there are two
different plants mixed up together. One (the smaller of the two) is
C. laui, or a form of it, but
the other is a dwarf geophytic form of
C. humilis. They have very different flowers corresponding to those
typical of these unrelated complexes.
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Hunt D.
(Ed.) (2001)
Copiapoathon Session 2,
Cactaceae Systematics Initiatives 12:
4-8 |
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Proposal 5:
C. laui: Retain as species pro tem. |
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Taylor N.
P., (2001)
Roots and mucilage in Copiapoa,
Cactaceae Systematics Initiatives 12: 18 |
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Hunt D. (Ed.)
(2002)
Cactaceae Systematics Initiatives 13:12 |
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Hoffmann A.E. & Walter H. (2004)
Cactaceas en la flora silvestre
de Chile (2nd Ed.): 130 |
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Hunt D. (Ed.)
(2006)
The New Cactus Lexicon |
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Schulz, R. (2006)
Copiapoa in their Environment (2006) |
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