four feet—the leaves are deep green, keeled and clasp the stem. They are about 
one foot in length and are bilobed at the apex. The flower spikes grow from the 
axils of the leaves and usually carry up to four flowers to the spike. They are a 
waxy ivory-white in appearance, and are approximately six inches across. The 
lip is large and heart-shaped, and the spur is as thick as a lead pencil, and up to 
eighteen inches long. Flowers appear in the Winter or early Spring. A native of 
Madagascar, it grows under conditions identical with those of eburneum, and the 
directions and data given for that species apply in all respects to sesquipedale. 
In the December 1937 issue of ‘The Australian Orchid Review” is an interesting 
article contributed by Mr. E. P. Firth, of Kenya, Equatorial Africa. The writer 
states that Angraecums are found there at elevations of from 4000 to 8000 feet, 
growing in dense shade. Apparently the Angraecums, like many other orchid 
genera, have adapted themselves over a wide range of climatic conditions. The 
Madagascan varieties all grow on the lower elevations in well lighted conditions. 
This variation of natural conditions is common to many genera, particularly 
Dendrobiums, Cypripediums, Cymbidiums, Cattleyas, and Vandas. An import- 
ant point to be remembered is that mere elevation does not necessarily mean cool 
conditions. A valley or glen at 8000 feet may be much hotter and more humid 
than a plain or hill of only a few feet elevation in the same latitude. It is, there- 
fore, desirable to know where all plants cultivated actually come from and un- 
der what conditions they and their forebears have lived. 
AERANGIS ELLISII (syn: Angraecum Ellisii). 
This is one of the prettiest of the smaller species. A native of Madagascar, it 
grows to a height of about twelve inches and carries five to six pairs of leaves 
each about ten inches in length, being broad and tongue-shaped, bilobed at the 
apex, and a bright green in colour. The flower spikes are about eighteen inches 
long and are arched. They carry a number of pure white flowers each about two 
and a half inches across. They have a white spur about six inches long. The 
flowers appear in the Autumn and are very sweetly scented. Like other members 
of the family, they grow on sparsely foliaged trees on the edge of the forests of 
the coastal areas, and are rarely found at an elevation above 1000 feet from the 
sea level. The cultural directions set out for eburneum apply in all respects to 
this species. 
LEPTOCENTRUM CAUDATUM (syn: Angraecum caudatum). A Native of 
Sierra Leone, 
Plant grows about a foot high—leaves strap-shaped and recurved, and about 10 
inches long. Flower spikes have blossoms arranged in two parallel rows. Sepals 
and petals vary from deep yellow to dark brown. Lip large and pure white with 
a long, projecting point. Spur about nine inches long and coloured brown. Flowers 
in late Summer and Autumn. Temperature:— 
January 67° to 92° May 69° to 91° September 69° to 87° 
February 68° to 91° June 69° to 89° October 68° to 88°“ 
March Fl: \to.92- July 70° to 89° November 68° to 90° 
April 71° to 93" August 69° to 86° December 68 to 90° 
38 
