i 
= 
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27 
brownish ; the labellum white, with the upper portion tinged 
with purple. It appears to produce only a solitary flower at 
a time.” 
50. COBRA stipularis.* Bentham plant. Hartweg. p. 45. 
This fine species has been raised in the garden ot the 
Horticultural Society from Mr. Hartweg’s Mexican seeds. 
Its habit is that of the old Cobea scandens, but it is appa- 
rently more delicate, the leaves are narrower, of a paler and 
brighter green, and the flowers are described as being yellow, 
three inches long, obliquely inflated at the apex, and very 
much contracted below the middle. It will doubtless prove 
a summer climber ; but will not bear our winters. 
51. CLETHRA mexicana. DeCandolle Prodr. 7. 590. Bentham plant. 
Hartweg. p. 45. no. 341. 
An evergreen shrub or small tree from the colder regions 
of Mexico, where it has been found by various collectors. 
Mr. Hartweg sent home seeds, but they have not grown ; it 
however exists in our gardens, having been raised by Messrs. 
Loddiges. The leaves are obovate, very obtuse, about four 
inches long, and white with down on the under side. Its 
flowers appear from the dried specimens to be very like, and 
quite as handsome as, those of Clethra arborea. 
52. ALNUS jorullensis. Humb. Bonpl. & Kunth, nov. gen. et sp. pl. 2.20. 
Bentham plant. Hartw. p. 52. no. 392. 
A very fine looking Alder, from seeds of which, collected 
in Mexico by Mr. Hartweg, at a place called Zacualtipan, 
in the mountains between the city of Mexico and Tampico, 
plants have been raised in the garden of the Horticultural 
Society. It has fine oval acuminate leaves, from four to five 
inches long, with veins prominent and downy on the under 
side. Mr. Hartweg considered it a Birch, put it seems to 
be an undoubted species of Alder. It may be expected to be 
hardy. 
53. GARRYA laurifolia. Hartweg in Benth. plant. Hartweg. p. 14. no. 81. 
This gives our gardens a new species of the curious hardy 
genus Garrya, of which Mr. Hartweg has discovered no 
fewer than five during his travels in Mexico. A considerable 
quantity of seed was given away by the Horticultural Society, 
and it appeared to be in good condition ; from that however 
