CLEMATIS 367 



Var. LAVALLEI (C. Lavallei, Decaisne) is a very strong-growing form with 

 sweet-scented flowers of both sexes on the same plant (monoecious) ; flower- 

 stalks up to 1 8 ins. long ; flowers f in. long. 



C. TANGUTICA, Andrt. 



(C. orientalis var. tangutica, Maximowicz ; Bot. Mag., t. 7710.) 



A species closely allied to, or perhaps a variety of, C. orientalis ; growing 

 8 or 10 ft. high ; stems slightly downy. Leaves grey-green, like those of 

 C. orientalis, but downy when young ; leaflets raggedly toothed, and sometimes 

 two- or three-lobed. Flowers rich yellow, solitary, on downy stalks 3 to 6 ins. 

 long ; sepals nearly 2 ins. long, narrowly ovate, long and slenderly pointed, 

 downy outside and at the edges. Seed-vessels crowned with long feathered styles. 



Native of Central Asia; introduced to Kew from St Petersburg in 1898. 

 It is the handsomest yellow-flowered Clematis in cultivation, the finest flowers 

 being about 4 ins. across. It differs from C. orientalis in the larger flowers, 

 and in the downy stems, flower-stalks, etc. It is a superior plant. 



C. TUBULOSA, Turczaninow. 



(C. heracleaefolia, De Candolle (in part).) 



A semi-shrubby, deciduous plant, growing 2 to 2^ ft. high ; stems ribbed, 

 more or less downy, brownish red. Leaves composed of three leaflets, the 

 terminal one much the largest, roundish ovate ; shallowly, unequally, and 

 sparsely bristly toothed ; the base slightly heart-shaped, or almost cut off 

 straight ; from 2 to 5 ins. long and wide ; the side leaflets are similar in texture, 

 etc., but are only half the size, and are scarcely stalked. Flowers f to i in. 

 long, produced from the joints of the stems of the year in dense short clusters, 

 each flower on a downy stalk i in. or less in length. They are tubular at the 

 lower half and swollen at the base, the four sepals curling outwards and 

 backwards towards the end, deep blue outside, downy. The flowers are uni- 

 sexual, but both sexes appear on one plant. Seed-vessels with feathered tails. 



Native of Central and N. China ; introduced in 1837; flowering from July to 

 September. It is the type species of a group of Clematis, whose four sepals 

 close up and form a half tubular flower of the same shape as hyacinths ; to this 

 group C. Davidiana and C. stans as well as other minor forms belong. They 

 are notable for the large leaves and robust, although semi-herbaceous growths. 



Var. HOOKERI (Bot. Mag., t. 6801) has paler flowers. 



C. UNCINATA, Champion. 

 (C. leiocarpa, Oliver ; Hooker's Icones PL, t. 1533.) 



A large climbing shrub, with smooth, slender stems. Leaves doubly 

 ternate, the three or five primary divisions being again trifoliolate. Leaflets all 

 stalked, quite smooth, oval or oval-lanceolate, pointed at the apex, rounded at 

 the base, not toothed ; somewhat leathery, and deep shining green ; i^ to 4 ins. 

 long, one-third as wide. Flowers i in. diameter, produced from the leaf-axils, 

 and at the ends of the shoots on branching cymes 4 to 6 ins. long. Sepals 

 four, narrow oblong, purplish brown with white, downy margins. Stamens 

 smooth. Seed-vessel crowned with a feathery style, but itself smooth and 

 lance-shaped. 



Native of Central China ; discovered by Henry about 1884 ; introduced to 

 cultivation by Wilson in 1901. The species appears to be somewhat tender, 

 especially when young, and may need the protection of a wall. It flowered 

 with Messrs Veitch at Coombe Wood in July 1906. 



