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Excerpts from
VOLUME 74, NO. 3—July, August, September 2010

An Orchid Hunting Journey over the Peruvian Andes, 2008
Rosa María Román-Cuesta, Norma Salinas, William Nauray, Quintin Lake,
Teresa Meacham and David Rueger
19 pages, 46 photos

74-3 Peru River

In July 2008, an Oxford University expedition guided by two Peruvian botanists traveled for one month to the Andean sectors of the InterOceanic Highway (transects II & IV). Expedition members included: Rosa María Román-Cuesta (Expedition Leader), Norma Salinas Revilla (Leading Botanist, Oriel College), David Rueger (Financial Officer, St Hugh’s College), Theresa Meacham (Pembroke College), William Nauray (Botanist), Quintin Lake (Medical Officer and Photographer). The goal was to develop an orchid inventory that could be used as a baseline for future research in the area. With a final orchid count of forty genera, over a hundred species, and two potentially new species (one already confirmed), the InterOceanic Highway—and its surrounding cloud forests—is a paradise for orchid lovers...

Top: The Inambari River in southeastern Peru is an area where construction will occur on 700 km of unpaved roads.
©Quintin Lake

Right: GoogleEarth view of the expedition route, marked in red.
Cusco-Puente Inambari-Ayaviri-Cusco, trasnects II and IV of the IOH.


Orchid Digest 74-2

Breeding with Recently Described Vietnamense Paphiopedilums
Olaf Gruss & Helmut Rohrl
14 pages, 48 photos, 5 drawings

Paphiopedilum barbigerum var. coccineum differs from the typical form by its larger flower and the carminebrown coloration of its dorsal sepal. The species is closely related to P. gratrixianum, P. helenae, P. henryanum, and P. insigne.

Orchid Digest 74-3


Paph.barbigerum var. coccineum in situ.


Boisduval Scale on Orchids
Paul J. Johnson
8 pages, 11 photos

Orchid Digest 74-2i

Scale insects are probably the most important and damaging insect pests of cultivated orchids worldwide, particularly so in greenhouses of northern climates. According to Dekle (1976), there are no fewer than 27 species of scale identified from cultivated orchids, but Chou et al. (1994) listed 71 species of armored scales and 21 species of soft scales from orchids worldwide. Especially frequent and damaging is the Boisduval scale, which is one of the most serious scale pests on orchids and many other ornamental plants...

Two newly matured female Boisduval scale developing protective layer along midrib of leaf.