First Continental Record of Thelypteris guadalupensis (Wikstrom) Proctor in the State of Quintana Roo, Mexico

1 Pages·1993·0.58 MB·English

by  Ramón Riba

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SHORTER NOTE REVIEWS
39
SHORTER NOTE
First continental record of Thelypteris guadalupensis (Wikstrom) Proctor in the state
—
of Quintana Roo, Mexico. As a result of intensive field work in the southern part of
the State of Quintana Roo, Mexico, Thelypteris (subgenus Gonioptens) guadalupensis
(Wikstrom) Proctor was found in the Municipio Othon P. Blanco (S. Torres et al. 605,
CIQRO, UAMIZ; Ceballos CIQRO), growing on limestone rocks and associated with
1,
Tectaria heracleifolia, in low subdeciduous forest. The species is very rare and only two
The
mature specimens and a few small plants have been found in the site of recollection.
America, otherwise
collections represent the continental record of the species in
first
widely distributed in Greater and Lesser Antilles; Thelypteris guadahipensis is one of the
few species of the genus with pinnatifid or merely lobed leaf, and differs from the
it
20%
endemic hildae Proctor from Puerto Rico, for the shorter petiole, of the leaf
T.
somewhat
downward 2-5
length of blades decrescent with distinct pairs of
shorter,
The
reduced pinnae and minutely stellate-puberulous tissue in the abaxial side of the leaf.
acknowl-
comments of Alan R. Smith about the identification of the plants are gratefully
—Ramon
edged Rtba, UAM-Iztapalapa; Ap. Postal 55-535, Mexico, D.F. 09340, and S.
CIQRO; Roo
Torres, Ap. Postal 424, Chetumal, Q. 77000.
REVIEWS
Agnes
Ferns and orchids of the Mariana Islands by Lynn Raulerson and F. Rinchart.
Guam
Box Agana, 96910. Paper,
1992. 138 Available from Uic authors, O. 428,
pp. P.
ISBN
$15.00 1-878453-09-2.
postpaid.
Guam. Sainan. and Tinian are best known of the 15 Mariana Islands, which form a
Ocean
and
3-mo
and The maritime, with a
coral-derived climate tropical
soils. is
beginning of the year and 5-month wet season that ends just before
have
number 90 excluding exotics
Tlie Dteridcnhvtes species, tliat
common
Nepluvlepis,
well as
disperse and establish themselves well, especially of Thelypteris, as
Polypodium, and The Marianas have a surprisingly diverse pteridophytc flora,
Pteris.
everything from Ophioglossum to Cyathea to Schizaea. Virtually every species is illus-
when
few the plants
most bv handsome and photographs. In a cases,
habit detoil
trated,
islands
specimen
vided only of genera. Each species' range and habitat are given and it
to Uic species larger
each
on cultivation, etc. are included for
Miscellaneous notes uses,
is briefly described.
Some mentioned the conclusion of the fern
species. dubious or provisional species are at
The book be
will use-
and exciting to find.
treatment give readers sometliing additional
to
beyond
and the
students visiting in
ful to both casual and serious fern (and orchid)
M
- lellinger, Dept. of Botany,
recommended D. B.
and
[sland.s. is to all
DC
20560
Washington.