502 Botanical, Floricultural, and Arhoricultural Notices. 



tember, if treated in the following manner. The seed should be sown about 

 the middle of March, in pots filled with a mixture of sandy loam, old lime 

 rubbish, and well decomposed cow-dung, in equal portions. The plants 

 should be raised in a hotbed, and, when large enough, should be potted off 

 singly into small 60-pots, filled with the same kind of compost as that in 

 which the seeds were sown. The young plants, when potted, should be 

 again returned to the hotbed ; and, when well established, their pots being 

 well filled with roots, should be re-potted into upright thirty-twos, draining 

 the pots well, and covering the surface of the soil with a thin covering of 

 fine sand. After this, the pots should be placed on the front shelf of a 

 greenhouse, where they are freely exposed to the sun, but guarded from 

 wind and rain, the first of which destroys the flowers, and the latter the 

 plants. Care must also be taken in watering the plants, as on this much 

 depends of the success in their management ; for they are very subject to 

 damp off close to the soil." {Bot. Reg., July, 1843.) 



QactecB, 



3359. ECHINOCA'CTUS 



centeterius Pfeiff- many-spined tt. ^ or | jl Y.R Mexico 1840. O s.p Bot. mag. 3974. 



This is a very handsome species : the flowers are copious and very large, 

 each being nearly 3 in. across. The petals are of a pale yellow, with a 

 reddish streak down the centre. The species is remarkable for the great 

 number of its spines. {Bot. Mag., Oct. 1842.) 



1471. MAMMILLA'RIA 



pycnacantha Mart, densely-spined tt. 113 or ^ jl Y Mexico 1841. O s.p Bot. mag. 3972. 



This plant is remarkable for the large size of its flowers, and their great 

 abundance. The plant itself is about 6 in. high, and the same in width, and 

 the flowers are produced on the summit five or six at a time, each about 3 in. 

 in diameter ; so that the flowers take up nearly half the height of the plant. 

 They appear in July, and numerous offsets also are produced from the apex 

 of the plant. {Bot. Mag., Oct. 1842.) 



turbinata Hook, top-shaped *«- ZD gr 4 jl Str Mexico 1838. O s.p Bot. mag. 3984. 



This curious plant is only about as large as a moderately sized apple. It is 

 of a singularly pale glaucous hue. The flowers are about an inch in diameter, 

 and seldom more than two or three open at a time. {Bot. Mag., Dec. 1842.) 



Cereus biformis Lindl. A pretty plant from Honduras, with bright rose- 

 coloured flowers. {Bot. Reg. June, 1843, Misc.) 



Cereus sj)ecioszsshnus var. minhmis. A very small-flowered variety raised by 

 Mr. Scott, gardener to George Barclay, Esq., of Bury Hill. {Bot. Reg., Sept. 

 1842.) 



GrossuldcecB. 



719. RPBES 



albidum Paxt. whitish 3i or 4 ap W.Pk hybrid 1842. C co Paxt. mag. bot. vol. x. p. 55. 



This very beautiful plant was found in a garden at Inveresk, near Mussel- 

 burgh. " The flowers are of a very delicate French white, with a pink eye ; 

 while the plant has larger racemes of flowers than R. sangulneum, and is a 

 more profuse bloomer. It forms a very pleasing contrast to the deep red 

 flowers of R. sangulneum, and is a most desirable acquisition to the shrubbery 

 and flower-garden. It is propagated in the same way as R. sangulneum (by 

 cuttings or slips), is of the same robust habit of growth, and, hke that species, 

 thrives well in almost any sort of soil or situation." {Paxt. Mag. of Bot., 

 April, 1843.) 



^uhiacece. 



602. RONDELE'T/.^ 



longiflbra CAflwj. long-flowered tt. □ or 2 an B Brazil 1841. C co Bot. mag. 3977. 



This beautiful blue Rondeletia is another instance of the fallacy of the doc- 

 trine of blue and red and yellow flowers not being found in the same genus, as 



