CHAP. XXXV 



JRHAMNA CE&. 



541 



We have little doubt that all the above species would cross-fecundate, and, consequently, that the 

 beautiful ultramarine blue of the flowers of C. azureus, or some portion of it, might be given to C. 

 americanus, which would be a very desirable acquisition. Indeed, there is such a close general 

 resemblance between all the sorts described, that we cannot help suspecting that they are only races 

 or varieties of one or two original forms. C. azureus, C. americanus, and C. velutlnus when it can 

 be got, ought to be in every collection. Where there is a conservative wall, and the choice is limited 

 to half a dozen or a dozen plants, C. azureus, which continues in flower during the greater part of 

 summer, ought undoubtedly to be one of them. 



App. I. Half-hardy Genera and Species of the order T&hamndcecc, 



Sphatrocarya (from sphaira, a sphere, and caryon, a nut) edulis Wall. Fl. Ind., ii. p. 371., Don's 



Mill., ii. p. 27., is a native of Nepal, in forests, producing a fruit of a pale brown colour, the flesh of 



which is eaten by the inhabitants. It grows to a tree of 40 ft. in height, with ovate, alternate, smooth 



leaves, and racemes of greenish inodorous flowers. When introduced, it will probably be found not 



more tender than other Nipal trees. 



Condal'ia. (in honour of Anthony Condal, M.D., the companion of Loefling in his voyages) micro- 



phylla Cav. Icon., 6. p. 16. t. 525., Don's Mill., 2. p. 27., {fig. 216".) is a spiny shrub, a native of Chili, 



a good deal resembling a Zizyphus. 



Sageret'ia. (named in honour of M. Sagerct, member of the Royal Agri- 

 cultural Society of Paris, a vegetable physiologist) Theezans Brongn. 



Mem. Rhctm., p.52., Don's Mill., ii. p. 28. ; the 7?h;'imnus Theezans of Lin. 



Mant., 207., and the R. Thea of Osb. Itin., 232., is a shrub growing to the 



height of 4 ft, a native of China, where it is said the poor make use of 



the leaves instead of those of the true tea. The branches are divaricate, 



spiny at the apex. Leaves ovate, smooth, serrulated. Flowers somewhat 



panicled, glomerated, in terminal spikes, greenish. This species has not 



yet been introduced ; though there are plants bearing the name of .Rham. 



nus Theezans in the garden of the London Horticultural Society, growing 



with great luxuriance, which appear to be only a variety of iihamnus 



^laternus. 



S. oppositifblia Brongn., the Zizyphus oppositifblia of Wall., and S. ha~ 

 mbsa Brongn., the Zizyphus hambsa of Wall., are Nepal climbing shrubs, 

 which have not yet been introduced ; and which, though marked as 



requiring the green-house, would doubtless stand against a conservative 

 wall. 



Scutia (from scutum, a shield ; in allusion to the form of the disk of the 

 flower) capensis Brongn. Mt<m. Rham., p. 55., Don's Mill., ii. p. 33. ; the 

 /?hamnus capensis of Thunb., and Ceanothus capensis of Dec, is a Cape 

 shrub, growing to the height of 4 ft. ; introduced in 1823, and sometimes to be found in green- 

 houses. 



Retanilla {retanilla is the aboriginal name in Peru) obcordata Brongn. Mem. Rham., p. 57., 

 Don's Mill., ii. p. 34., the Rhamnus Rctanilla of Domb., and the ColleUa Retanilla of Vent. Hort. 

 Cels., t. 92., is a twiggy shrub, with white flowers, a native of Peru, where it grows to the height of 

 3 ft R.'E/phedra Brongn., the .fthamnusii'phedra of Domb., and the Collet?'« Ephedra of Vent. Choix., 

 1. 16., is also a native of Peru. Both these shrubs are in the country, and are kept in green-houses j 

 but we have little doubt of their being as hardy as the plants of the genus Colletza. 



Collelia (named by Commerson in honour of his friend and coun- 

 tryman Collet, who wrote upon the plants of Brest) spinbsa Kunth 

 Nov. Gen. Amer., 7. p. 58., Hook . Bot. Miscel., 1. p. 153. t. 44 a, 

 {fig. 217.) the ColleUtf polyacantha of Willd., is a native of 

 Chili, Peru, and also of Brazil. It is a shrub with few and small 

 leaves, but with numerous, very strong, awl-shaped spines. The 

 flowers are of a reddish yellow, and whitish in the centre. This 

 shrub has been tried in the open air, both against a wall and in 

 the open border, in the Horticultural Society's Garden; and, in 

 1835, it had stood three years, without any protection, flowering 

 freely in the summer season, from May to' August. It has stood ^ 

 out for three winters in the open border in Buchanan's Nursery, M% 

 Camberwell, without any protection, and against a wall in the l[ 

 Fulham Nursery. We think we can safely recommend it as a shrub 

 for the open border, at least in dry sheltered situations. 



C. serrat/fblia Vent. Choix., t. 15. ; the Zfhamnus Spartium of 

 Domb., also from Peru ; C. cruciata Gill, et Hook. Bot. Misc., 1. 

 p. 152. t. 43., from sandy hills in La Plata ; C.ferox Gill, et Hook., from Chili ; C. xxlicina Gill, et 

 Hook., the ulex, or furze-like Collet?'«, also from Chili; C. Chacaye G.Don, the .fthamnus 

 Chacaye of Domb., from Peru ; and C. tctragbna Brongn., also from Peru ; are probably as hardy as C. 

 spinbsa. They will grow in any common garden soil, and are propagated by cuttings or seeds. 



Trevba. (from Trcvo, the name of some Spanish botanist) quinquenervis Meyers in Hook. Bot. 

 Misc., 1. p. 158. t. 45. b, and Don's Mill., 2. p. 35., and T. trinervis, are spiny shrubs, growing to 

 the height of 4 ft. or 6 ft. ; natives of Chili, on the Andes, and probably as hardy as Collets. The 

 last species was introduced in 1828. 



Discaria (from discus, a disk ; the disk of the flower being very broad) americana Hook. Bot. Misc., 

 1. t. 44. d., is a spiny shrub, a native of Buenos Ayres; and D. australis Hook, is a native of New 

 Holland; neither of which has yet been introduced. 



Hovenid (in honour of D. Hoven, a senator of Amsterdam, who contributed to the success of 

 the travels of Thunberg by his good offices) dulcis Thunb. is a fruit tree of Japan, where it is 

 called ken, and kenpokonas. It has large, cordate, acuminated leaves, and small white flowers. The 

 fruit is said to contain a sweet red pulp, which has a taste somewhat like that of a pear. It was 

 introduced in 1812 ; and a plant of it in the Botanic Garden at Kew has stood against a south wall 

 since the year 1816. Another has stood in the Horticultural Society's Garden since the year 1816; 

 In both gardens, they have attained the height of the wall ; and, though the young shoots are 

 generally killed back in winter, when they receive no protection, yet the plants grow vigorously 

 during every summer. The tree, which grows to the height of 12 ft. in its native country, is figured 

 in Kcempfer's Amcen. Ex., 2. p. 809. In 1830 there was a plant of this species in Knight's Nursery, 

 10 ft. high, in a pot. " 



