Cystopteris fragilis (L.) Bernh.

• Region

  North America

• Country

  Mexico

• State/Province

  Jalisco

• Locality

  Middle slope on steep W side of Cerro Grande, overlooking the valley between San Pedro Toxín and El Sauz, along transect from (and 1.6 km due E of) LOS ENCINITOS to the C.G. antennas, 7 km airline distance due NW of El Terrero, 38 km due NW of Colima Vásquez study site 36.

• Elevation

  Alt. 1810 m. (5938 ft.)

• Coordinates

  19.4919, -103.982

• Location Notes

  [Mexico & Central America]

• Distribution

  Map all specimens of this taxon

NEW YORK BOTANICAL GARDEN
04065269
BOTANICAL
STAND 36, actual quantitative data:
undisturbed, matching best—but not described
by Rzedowski &McVaugh, 1966--tropical dry for-
est. Exposure: W; slope: 42%, 477o, 677o.
Thirty one total woody spp. (over 1 in. dbh.) pre-
sent, leading dominant (canopy tree) : Acacia
?acatlensis -I.V. 16.77, next most important tree:
Bipholis 8p.-4.61; secondarily important (sub-
canopy trees) : Euphorbia cotinifolia-11.21.
Russelia sp.-11.08, Chiococca pachyphylla-6.32,
Bursera grandifolla-4.86; most important under-
story sp”: "tacoteY,:7.97; most important vine:
Couania polygama-3.30»	sampled.
l0 quadrats of 0.010 ha sampled«0.100 ha area ^
MEXICO: Edo. Jalisco
Reserva Biosfera Sierra de Manantldn
Cystopteris fragilis (L.) Bernh.
Quadrato Whittaker de 1,000 m .
Undisturbed seasonally dry tropical' forest (not
"bosque mesofilo de montana"); leading trees in
descending order of frequency: Acacia acatlensis
(20-35 m tall)-Ru8selia arbórea (13. rarely 15 m
m)-Poulzozia sp., with Chlococca-Xylosma-Ery-
thrina of similar frequency to one another, Bur-
sera & Prunus (not cortaplco) less frequent than
these, andTrichilla &Fraxinus uhdei rare (latter
8-10 m, at lowest edge of alt. range) ; Montanoa
abundant in understory (not more than 7 m tall or 3
cm DBH., no palms present but Chuspuea llebmannil
abundant; groundlayer very rich, with many ferns
(Asplenlum pumilum, Cystopteris fragilis. Adlan-
tum poiretll, Pellaea ovata. Dryopteris. Pecluma),
some orchids (Habenaria novemfida. Malaxis rosil-
lol), herbs (Tradescantia commellnoides. Thalic-
trum. Peperomia dlstachya. Solanum bulbocastanum.
Drymaria. Bonplandia. Salvia. Achimenes) , gras-
ses (Panicum arundinariae. Lasiacls nigra. Oplis-
menus); shrubs and vines both very high in diver*-
sity and density (Acalypha. Bouvardia. Calliandra.
Croton. Myrcianthes. Bunchosia, Wimmeria. Alston-
ia long!folia, etc. and Dioscorea remotiflora.
Gouanla. Gaudichaudla. Mandevilla. Fuchsia. Mel-
lichampia. Serjania. Nissolia. Cyclanthera. etc.).
Middle slope on steep W side of CERSO GRANDE, a mas-
sive limestone plateau, overlooking the valley
between San Pedro Toxin and El Sauz, along tran-
sect from (and 1.6 km due E of) LOS ENCINITOS to the
C.G. antennas, 7 km airline distance due NW of El
Terrero, 38 km due NW of Colima (19°29'31"N, 103°
58'54"W). Alt. 1,810 m. Vazquez study site il/.
T. S. Cochrane No. 13,009 , with	36
A. Va'zquez G., F. J. SantanaM., and D. T. Aussem
Field work supported by the Instituto Manantlán de Ecología
y Conservación de La Blodiversidad (IMECBIO), Univ. de Guad-
alajara, and the Natural History Museums Council, E.K. and
O.N. Allen Herbarium Fund, and the Davis Fund, all of the
Univ. of Wisconsin-Madison.
04065269