5. Lomas of the Chicama-Moche area
(Table 9, fig. 4)
These "loma" formations located in mountains close to the coast between the Chicama and
Moche watersheds have vegetation between 200 and 400 m during the foggy season (June-
October) when the fog lasts long enough in any one year.
Observations on the Lycopersicon spp.
The Cerro Campana population of L. peruvianum has been extensively studied. It is an annual
with long straggling growth and is classified as a single inflorescence type intermediate between var.
humifusum of Jequetepeque and the rest of the southern populations (Rick 1963). The L. hirsutum
populations found here are at the lowest altitude we know of. No crossing studies have been made
since only herbarium specimens are available at this time.
6. Watershed: Moche
(Table 10, fig. 4)
This watershed is of intermediate size having a fairly small delta. The agricultural land is
being encroached upon by the city of Trujillo. The water supply is restricted since the river does
not carry water year around but from Dec.-Jan. to July-September.
Observations on Lycopersicon spp.
L. peruvianum is fairly common above 1500 m. It seems to behave as a particular mountain race
(LA124) as evidenced by its crossability with var. humifusum from the nearby Jequetepeque watershed
(Rick 1963). It should be noted that on the lower delta (non loma) there have been no collections even
though this area has probably been often visited by botanists. Cultivation of the area for some
time may be the cause for this disappearance since ecologically the conditions seem favorable. In
the lower part of the next three watersheds - -Virú, Chao and Santa - L. peruvianum has not yet been
found.
L. hirsutum is quite abundant in the 1800 to 2500 m altitude range, which is its normal zone of
dispersal.
7. Watershed: Santa
(Table 11, fig. 4)
This is one of the few rivers having a year around water supply. The area west of the
mountain range is relatively small in comparison with the south-to-north intermountain run
between the "Cordillera Blanca" and "Negra" - the zone called the "Callejón de Huaylas." The
western area is cut off from the upper Santa by the narrow "Cañon del Pato", a feature which
prevents the movement of propagative material by sheep or birds, for example, from one side to the
other. The current transformation of a railroad track into a road will make access to the area
much easier.
The lower part of the valley has been observed more or less carefully, while the
intermediate area has not been well collected. The upper Santa in the Callejón appears to belong to a
high interandean ecology which is exemplified by the few L. hirsutum specimens found there,
however, these populations have not been studied genetically. The significance of this gap of ZOO
kms along the coast from the Moche to the Casma needs careful study.
One specimen of L. peruvianum has been reported close to Mancos (Smith and Blas, No. 4889) and
one at Colcabamba (J. Lopez G., No. 1796).
Solanum pennellii appears in the Santa (Tanguche) and in the Nepeña (Moro) watersheds as very rare
plants in typical locations for the species -- extremely dry "huayco" sites. Seed is available from
both collections.
8. Watershed: Nepeña
(Table 11, fig. 4, 5)
The Nepeña is a very short river whose upper part is "quebrada"-like and the lower part, a fairly flat
land that supports principally a large sugar cane operation. Only S. pennellii of the
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