90 
NEW AND RARE PLANTS. 
parts of the "West Indies, on waste land, neglected corn-fields, by the sides of rivers, 
and upon fences, to which latter its long twining stems rapidly and firmly attach 
themselves. It is a stove climbing plant, and produces an abundance of its hand- 
some purple blossoms in long racemes in the month of September in the stoves of 
this country. Jacquin states that in the West Indies the hairs of this species 
pierce even the thick hide of the negroes ; it would appear, however, that other 
species are still more malignant ; for in India there is a kind called Enoola doola- 
unda, or Elephant's scratch- wort, the stings of which cause a considerable degree 
of pain and itching. Bot. Reg. 1 8. 
THE TRUMPET-FLOWER TRIBE (Bignoniacece). 
Amphicome arguta. Finely-cut Amphicome. This is a rare and very 
elegant perennial, with pink-coloured flowers ; it has a weak stem, and grows 
about a foot high, and is probably sufficiently hardy to stand out through the whole 
season in the open ground, if it be planted in a dry situation or on rock-work, and 
protected during the winter months from the wet and the most severe frosts by a 
hand-glass or other shelter. Any superabundance of moisture is extremely 
injurious to it, and this must be guarded against at all seasons ; it thrives best in 
a light loamy soil, with a small portion of sandy peat added, and may be increased 
by seeds or cuttings. Bot. Beg. 19. 
THE PASSION-FLOWER TRIBE {Passifloracecs). 
Passiflora onychina. Lieutenant Sullivan's Passion-flower. This is an 
extremely handsome new Passion-flower, with beautiful blue-coloured blossoms, 
which were produced in the stove of Miss Trail of Bromley, Kent. It is described 
as being of very luxuriant habits, and seems to thrive best when planted in a 
border of rich loam. Its season of flowering is in the months of October and 
November, and it may most probably be increased by cuttings. Bot. Reg, 21. 
THE CACTUS TRIBE {Cactacece). 
Mammillaria tenuis. Taper Mam miliaria. This is a plant of great beauty, 
and very curious structure, growing from two to four inches high, and an inch or 
more in diameter ; the whole plant is covered with mammillae of a hemispherical 
form ; these are green, about a quarter of an inch in diameter, and each is tipped 
with a tuft of white down, from which diverges a cluster of about twenty slender, 
recurvo-patent aculei, nearly as long as the mammilla?, which are at first reddish, 
and afterwards of a yellowish or pale tawny colour ; from just below the summit 
of the plant, and from all sides indifferently, the flowers are produced, which are 
small, solitary, and campanulate ; they are of a pale yellow or straw colour, and 
slightly tinged with red externally. Bot. Mag. 3646. 
Mammillaria floribunda. Copious-flowering Mammillaria. A truly 
beautiful species of this interesting genus, imported from Chili by Mr. Hitchin. 
Sir W. J. Hooker is not aware of its Laving been previously described in any other 
