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Laelia Tenebrosa The Rainbow Cattleya Orchids, The American Orchid Society Magazine December, 2003 |
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John Rolfe was one of the giants of the orchid world during
the late 1800s. He was one of the most knowledgeable and hardworking
orchid bo He established the magazine The Orchid Review in 1893 and
was the primary author and editor until shortly before his death in 1921.
Rolfe was unique among his peers because he seemed almost happy at times
to admit he was wrong about a botanical description, the location of
an orchid habitat or some other important fact pertaining to orchids.
He wrote the first account of the discovery of Cattleya labiata in the
November 1893 issue of The Orchid Review, only to change it in 1900 and
again in 1907. By the time he Rolfe seems to be the only botanist of the 1800s who was interested in Laelia tenebrosa. In 1889, the Liverpool Horticultural Company sent him a flower that he described in The Gardener's Chronicle of June 1, 1889 as a larger and darker-than-normal form of Laelia grandis - a species Lindley had described in 1850 (Paxton's Flower Garden, pg. 60). Based on Rolfe's description of the 1889 flower, however, it was undoubtedly a Laelia tenebrosa, but Rolfe felt it was just an "individual variation" (of L. grandis) and therefore hardly worth describing as a "variety." Two years later in 1891, a Mr. A.H. Grimaditch of Clapton
Square, Liverpool sent him a flower and a ps eudobulb from a plant that
Rolfe described as " Laelia grandis var. tenebrosa ," ( Gardener's
Chronicle, 1891, pg. 126). Grimaditch said the plant had come from
a new district in Brazil. The flowers were large, co Rolfe made it a point to look at other plants of his L. grandis var. tenebrosa in
several Plants of L. tenebrosa were never available in
large numbers, and, except for a brief period in the late 1800s, it has
been scarce in cultivation compared with other species of large-flowered
Cattleyas. Laelia tenebrosa comes from a small area of southern
Espirito Santo State, Brazil, where it is now considered to be virtually
extinct. It grew originally on large trees in relatively dense forests.
Most plants available today come from sib crosses or m In its primary hybrids, L. tenebrosa tends to
impart a brightness that enriches the color and almost makes it glow,
and L. tenebrosa is one of the most important parents of many
of our yellow and art-shade Laeliocattleya hybrids. Its hybrid
with Cattleya dowiana made by Charlesworth in 1901, is the
famous Lc. Luminosa, which is one parent of Brassolaeliocattleya Truffautiana
(× Bc. Mrs. J. Leeman), Laeliocattleya Carmencita
(× C. dowiana ), Laeliocattleya Mrs. Medo (× C. Venus), Laeliocattleya Apricot
Gleam (× Lc. Moonbeam), Laelio-cattleya Golden
Eagle (× C. rex ), Laeliocattleya Golden
Crown (× C. Sibyl), and a host of others. The hybrid
between L. tenebrosa and Cattleya warneri is the
famous Laeliocattleya. Gottoiana , a parent of important
early purple hybrids like Laeliocattleya Saint Gothard (× C. Hardyana). Laeliocattleya St.
Gothard is in the background of most of our famous lavender hybrids today,
including Br In the late 1800s, when L. tenebrosa was most abundant in European collections, there were also some outstanding and large clones of Cattleya warneri in cultivation, which may account for the impressive Lc. Gottoiana used in early breeding. Laeliocattleya Gottoiana is also a naturally occurring hybrid, and some beautiful clones were imported from Bahia, Brazil in 1882, one of which received an FCC/RHS. The hybrid is named for Mr. E. Gotto of Hampton, England. Laelia tenebrosa is considered by breeders to be dominant for color, large size and deformity-free flowers, as well as excellent plant vigor. It imparts an unbelievable richness to the flowers of its hybrids; its only negative feature is, perhaps, its narrow petals. It is certainly one of the grandest of Brazil's orchids, and has been recognized for its excellence with seven American Orchid Society Awards of Merit, and two First Class Certificates. Like so many of our large-flowered Cattleya species, most of the fine old clones of L. tenebrosa have been lost to cultivation and appear only in the rich coloring of our Cattleya hybrids. Laelia tenebrosa today is like the elusive pot of gold at the end of the rainbow. It is there - but it is not there. Of the sib crosses still being made, we can only hope there are still some genes left that can unlock the grandeur of the past. How to Grow Laelia tenebrosa Laelia tenebrosa is a vigorous, easy-to-grow plant and one that most beginning orchid hobbyists should be able to grow well. It needs the same growing conditions as most cattleyas, including a day temperature of 85 F (29 C), night temperature of 60 F (16 C) and lots of moving air. Like Cattleya warneri, its Brazilian neighbor, it benefits from slightly less sun than the sun-loving cattleyas of Colombia, such as Cattleya warscewiczii, but will still grow fairly well even in high light levels. When actively growing, it requires more frequent watering and should not be allowed to become completely dry. It should be kept on the dry side after flowering until it begins its new growth. Laelia tenebrosa normally begins growing in the early autumn in the United States, and will complete its new growth by midwinter. It will then rest for several weeks and flower in late spring to early summer, depending on the clone. A well-grown plant should produce four to five flowers on a flower spike, and the flowers should last in bloom at least three weeks. The flowers will last longer if they can be kept out of the intense 90 F- (32 C-) plus temperatures of summer. - A.A. Chadwick. |