68 NEW AND RARE PLANTS. 
between Mammillaria and E chino cactus . It is covered with mammillse of a large 
size indeed, but these are arranged in costse. which are irregular, and slightly 
spiral ; the flowers are quite those of Mammillaria. The flowers are produced in 
abundance, and are rather durable ; each petal is marked with a line of pink down 
the centre, and, contrasted with the remaining yellowish white, gives the whole a 
striking and pleasing appearance. The figure was furnished by Messrs. Mackie, of 
the Lakenham Nursery, near Norwich, from their rich collection of succulents. 
Bot. Mag., 3558. 
EcHiNocACTUs Mackieanus. Mr. Mackie's Echinocactus, This species is 
also from the rich collection of Messrs. Mackie, and, like the preceding species, 
has a considerable affinity with the genus Mammillaria ; but is a much more 
neatly made and elegant species ; the flowers are also represented as being paler. 
It is also considered to be a native of Chili. The treatment of the genuine 
EcJiinocacti suit it, but it is of slower growth, and more difficult to cultivate. 
Bot. Mag., 3561 
BEGONIACE^. 
Begonia octopetala. Eight-petalled Begonia. This truly fine tuberous- 
rooted species of Begonia was sent from Lima, in L835, by John M'Lean, Esq., to 
the Glasgow Botanic Garden, where the large flowers, so ro.uch like those of 
Aiiemone vitifolia^ *were produced in the stove during the months of October and 
November, It flowers best if placed in a v*'arm part of the stove. Bot. Mag., 3559. 
CLASS IL— PLANTS WITH ONE COTYLEDON (MONOCOTYLEDONE^). 
THE ORCHIS TRIBE (oRCHIDEiE). 
Efidendrum chloroleucum. Green and White-flowered Epidendrum. 
This species, which was introduced from Demerara by John Allcard, Esq., very 
strikingly resembles Epidendrum odoratissimum ; and, like it, has long ovate bulbs 
terminated by two leaves, from between which arises the scape, bearing green and 
white flowers, but no fragrance. Culture the same as for other species. 
Bot. Mag., 3567. 
Chysis aurea. Golden-flowered Chysis. This is a very showy plant, the 
colours of the flower (yellow and crimson) being very bright, its texture firm, and 
its surface even and waxy. The lip, with its crimson veins and narrow elevations 
radiating from the base, is especially worthy of attention. It was collected in 
1834, by Mr. Henchman, in the valley of Cumancoa, in Venezuela, and flowered 
in the rich collection of Mr. Low of Clapton, also in that of Mr. Bateman's at 
Knypersley. In the morning it has a very delicate perfume, which it appears to 
lose in the heat of the day. Bot. Reg., 1937. 
BuLBOPHYLLUM barbigerum. Bearded Bulbophyllum. A most curious plant, 
introduced from Sierra Leone, by Messrs. Loddiges, with whom it flowered in June, 
1836. It grows pretty freely under the hot damp system of cultivating epiphytes. 
That a drawing is altogether incapable of representing such a strange con- 
formation as exists in this species^ will be evident in the course of the following 
