812 



ERICACEAE. XLII. CLETHRA. 



2 C. TOMENTOSA (Lam. diet. 2. p. 46.) leaves cuneate-obo- 

 vate, acute, finely serrated at top, clothed with white tomentum 

 beneath ; racemes spicate, simple, bracteate, villously tomen- 

 tose. TJ . H. Native of Virginia and Carolina, in swamps. 

 Wats. dend. brit. t. 89. C. alnifolia, /3, pubescens, Ait. hort. 

 kew. 2. p. 73. C. incana, Pers. ench. 1. p. 482. This is a very 

 distinct species, although it has been considered by some as a 

 mere variety of the preceding. 



Tomentose Clethra. Fl. July, Oct. Clt. 1731. Shrub 3 to 

 4 feet. 



3 C. SCA'BRA (Pers. ench. 1. p. 482.) leaves broad, cuneate- 

 obovate, acute, scabrous on both surfaces, coarsely serrated : 

 serratures hooked ; racemes spicate, subpanicled, bracteated. 

 finely tomentose. Tj . H. Native of the western parts of 

 Georgia, where it was collected by Mr. Lyon. 



Scabrous Clethra. Fl. July, Oct. Clt. 1806. Shrub 3 to 4 

 feet. 



4 C. PANICULA'TA (Ait. hort. kew. 2. p. 73.) leaves narrow, 

 cuneate-lanceolate, acute, acuminately serrated, glabrous on 

 both surfaces ; panicle terminal, elongated, composed of racemes, 

 and clothed with white tomentum, ^ . H. Native of Caro- 

 lina. 



Panicle-flowered Clethra. Fl. July, Oct. Clt. 1770. Shrub 

 3 to 4 feet. 



5 C. ACUMINA'TA (Michx. fl. amer. bor. 1. p. 260.) leaves 

 oval, acuminated, bluntish at the base, serrated, glabrous on 

 both surfaces, rather glaucous beneath ; racemes spicate, almost 

 solitary, bracteate, clothed with white tomentum. I? . H. 

 Native of Carolina, on the high mountains. Lodd. bot. cab. 

 1427. C. montana, Batr. cat. Grows to the size of a tree. 

 Flowers resembling those of C. alnifolia. 



Acuminated-leaved Clethra. Fl. July, Oct. Clt. 1806. 

 Tree 10 to 15 feet. 



6 C. BRASILIE'NSIS (Cham, in Linnaea. 8. p. 510.) leaves obo- 

 vate, obtuse, rather retuse, acutish at the base, cuneated, gla- 

 brous above and tomentose beneath, almost quite entire, or 

 serrulately-toothed at the apex : teeth and apex mucronate ; 

 racemes forming panicles at the tops of the branches, tomen- 

 tose ; segments of corolla fringed ; genitals inclosed. Jj . S. 

 Native of tropical Brazil. The leaves vary much in form and 

 size. Tomentum of a rusty-colour. 



Brazilian Clethra. Shrub or tree. 



7 C. FAGIFOLIA (H. B. et Kunth, nov. gen. amer. 3. p. 289.) 

 arboreous ; leaves obovate, sharply and remotely toothed, coria- 

 ceous, glabrous ; racemes clustered at the tops of the branches. 

 Jj . S. Native of South America, in woods near Bonavista, be- 

 tween Caraccas and La Victoria. Young branches angular, and 

 densely clothed with rusty down. Leaves 3-4 inches long, 

 paler beneath. Racemes clothed with rusty tomentum. Co- 

 rollas white, about the size of those of the lily of the valley. 



Beach-leaved Clethra. Tree. 



8 C. BICOLOR (H. B. et Kunth, 1. c. p. 289.) arboreous? 

 leaves oblong, coarsely and undulately crenated, coriaceous, 

 glabrous above, but clothed with white tomentum beneath ; 

 racemes in fascicles at the tops of the branches, fj . S. Na- 

 tive of South America, near Santa Fe de Bogota. Cuellaria 

 floribunda, Willd. herb. Branchlets angular, clothed with rusty 

 down, intermixed with stiff hairs, as well as the racemes. 

 Leaves 3-4 inches long, having the teeth intermixed with gland- 

 formed denticulations, while young having a few dot-formed 

 stellate hairs above. Corollas white. 



Two-coloured-]eaved Clethra. Tree. 



9 C. FIMBRIA'TA (H. B. et Kunth, 1. c. p. 290. t. 264.) arbo- 

 reous ; leaves elliptic-oblong, quite entire, coriaceous, glabrous 

 above, but clothed with white tomentum beneath ; racemes in 

 fascicles at the tops of the branches ; stamens hardly inclosed. 



1 



\l . S. Native along with the preceding. Cuellaria rugosa, 

 Willd. herb. Branches glabrous, brown. Flowers sub-secund, 

 nutant, about the size of those of C. alnifolia. Pedicels, calyxes, 

 and rachi clothed with rusty tomentum. Corolla white, having 

 the segments emarginately 2-lobed, and laciniately fringed at the 

 "apex. 



Fringed-fiowered Clethra. Tree. 



10 C. FERRUGINEA (Ruiz, et Pav. fl. per. vol. 4. t. 380. f. b.) 

 leaves oblong, quite entire, acuminated, excavated at the base. 



Tj . G. Native of Peru, on the mountains of Pillao, Panao, and 

 Chinchao, in groves. Cuellaria ferruginea, Ruiz et Pav. syst. 

 p. 103. Branches, leaves, and racemes clothed with rusty hairs. 

 Racemes simple, fascicled at the tops of the branches. Flowers 

 rather large. 



Rusty Clethra. Clt. 1800. Tree 15 feet. 



11 C. OBOVA'TA (Ruiz et Pav. fl. per. 4. t. 381.) leaves obo- 

 vate, wrinkled, denticulated. ^ G. Native of Peru, in 

 forests about Cuchero. Cuellaria obovata, Ruiz et Pav. syst. 

 p. 103. Racemes long, fascicled at the tops of the branches. 

 Branches and leaves downy. Flowers small. A tall tree. The 

 wood is very hard, and is made into utensils by the natives. 



Oiocate-leaved Clethra. Tree tall. 



12 C. REVOLU'TA (Ruiz et Pav. fl. per. 4. t. 380. f. a.) leaves 

 oblong, denticulated, revolute and excavated at the base. Tj . 

 G. Native of Peru, in forests towards Pillao. Cuellaria revo- 

 luta, Ruiz et Pav. syst. p. 103. Branches, leaves, and ra- 

 cemes downy. Racemes simple, fascicled at the tops of the 

 branches. 



Revolute-\eaved Clethra. Tree 30 feet. 



13 C. CANE'SCENS (Herb. Reinwdt. ex Blum, bijdr. p. 863.) 

 leaves cuneate-oblong, acute, serrulated at the apex ; panicle 

 terminal, clothed with canescent scurf; calycine segments ovate, 

 acute. Tj . G. Native of the Celebes, in woods, on the mountains. 



Canescent panicled Clethra. Fl. Sept. Shrub. 



14 C. TiNiF6nA (Swartz, fl. ind. occ. 2. p. 845.) arboreous; 

 leaves oblong-lanceolate, quite entire, hoary beneath ; racemes 

 spike-formed, panicled at the tops of the branches, tomentose. 



\} . G. Native of the south of Jamaica ; also of Mexico, near 

 Chiconquiaco. Tlnus occidentalis, Lin. spec. 530. Volkame- 

 ria, P. Browne, jam. 214. t. 21. f. 1. Sloan, jam. 2. p. 86. t. 

 198. f. 2. Flowers white. Sloane calls this tree Bastard 

 Locust tree. 



Laurestine-leaved Clethra. Clt. 1825. Tree 12 to 14 feet. 



15 C. ARBOREA (Ait. hort. kew. 2. p. 73.) leaves oblong, 

 attenuated, lanceolate, glabrous on both surfaces, serrated ; 

 racemes spike-formed, panicled at the tops of the branches ; 

 calycine segments obtuse. >2 . G. Native of Madeira. Sims, 

 bot. mag. 1057. Flowers white. There are several varieties 

 of this species ; a smaller variety, and a variegated-leaved one. 



Tree Clethra. Fl. Aug. Oct. Clt. 1784. Tree 8 to 10 

 feet. 



Cult. All the species of this genus are very ornamental. 

 The hardy kinds thrive best in peat earth, or a very light sandy 

 loam : they are dwarf shrubs, and are therefore well fitted for 

 the front of shrubberies, where the soil will suit. By layers is 

 the usual mode of increasing them, but they also strike root rea- 

 dily from cuttings in sand under a hand-glass. The greenhouse 

 kinds are well adapted for large conservatories, and they thrive 

 in the same kind of soil recommended for the hardy species. 

 Cuttings taken from wood not too ripe will strike root readily 

 in sand under a hand-glass. All may be raised from seeds, 

 which in most of the species ripen in plenty. 



Tribe II. 



RHODO X RE.53 (so called because the genera contained in it 

 agree with Rhodbra, or Rhododendron, in particular characters). 



