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Tas. 4498, 
CEREUS TWEEDIEI. 
(2 
VA ; 
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Mr. Tweedie's Golden-flowered Cereus. 
Nat. Ord. Cactea.—Icosanpria Monoeynia. 
Gen. Char. (Vide supra, Tas. 4417.) 
Currus Tweediei ; erectus cylindraceus glaucus polygonus, costis obtusis 
sequalibus (non tuberculatis), areolis copiosis ovalibus fusco-lanatis, spinis 
numerosis inzqualibus 4-5 validioribus albis fusco-variegatis quorum 3-4 
erecto-patentibus, unico cum reliquis minoribus albis omnibus deflexis, flo- 
ribus numerosis lateralibus aurantiacis, tubi calycini elongati curvati colorati 
squamis remotis inferioribus ciliatis, fauce obliqua, petalis brevissimis vix 
calycem sequantibus, staminibus ineequalibus superioribus longioribus exsertis. 
One of the prettiest of the Cereus group of Cactea, of a pecu- 
liarly glaucous tint, bearing in the latter end of summer, when 
little more than a foot high, copious, rather large, and very 
handsome flowers, elegant in shape and bright in colour. We 
are indebted for the possession of our largest and flowering 
plant at Kew, to Messrs. Lee, of the Hammersmith Nursery, but 
we received seeds from Buenos Ayres through Mr. Tweedie. It 
flowered for the first time in September 1849. I can find no 
species described that at all corresponds with it. ; 
Dzscr. Our tallest plants are about a foot toa foot and a half high, 
and an inch in diameter, of a very glaucous green hue, simple, but 
increasing readily by offsets at the base. The shape is cylindrical, 
very slightly tapering upwards, numbered with many, about six- 
teen, moderately deep furrows, perfectly straight, the ridges obtuse 
and even (not tubercled or mammillate). Areole on the ridges 
approximate, oval, woolly, the wool brown. pines many from 
each areola, of which four or five are stouter than the rest, 
white, blotched with brown, and of these stout ones three or 
four (half to three-quarters of an inch long) are erecto-patent ; 
a solitary stout one generally together with the other lesser ones, 
which are white, all point downwards. Flowers, of a rich orange- 
crimson, are numerous from the side of the stem, three inches 
MARCH Ist, 1850. D2 
