RUBUS 469 



broadly so, and rounded at the base, its stalk about half the length of the 

 blade and very prickly. All the leaflets are almost or quite smooth above, 

 covered beneath with a dull white felt ; margins doubly toothed. Flowers 

 white or pinkish, produced in a tall, erect panicle. This, one of the 

 handsomest of common brambles, has a double-flowered white variety called 

 FLORE PLENO, which is well worth cultivation in the garden on account of 

 its beauty, its flowering in July and August, and because it thrives in semi- 

 shady places. The panicles are erect, pyramidal, 6 to 8 ins. high. The 

 type is widely spread over England, Wales, and on the Continent. 



R. TRIANTHUS, Focke. 



A deciduous shrub of wide-spreading habit, the biennial stems erect, 

 much branched, spiny, blue-white, 4 to 6 ft. high. Leaves simple, 3 to 6 ins. 

 long, i^ to 4^ ins. wide ; ovate to triangular, distinctly three-lobed on the 

 barren stems, less markedly lobed on the flowering shoots ; middle lobe long, 

 taper-pointed, irregularly toothed, quite glabrous on both sides, whitish 

 beneath, dark green above ; there are hooked spines on the midrib and 

 veins beneath ; stalk \ to i| ins. long, similarly armed. Flowers pinkish 

 white, insignificant, produced a few together on c^mes that are terminal on 

 short lateral twigs. Fruit dark red. 



Native of Central China up to 400x3 ft. ; introduced for Messrs Veitch by 

 Wilson in 1900. It is distinct from most Rubi in the absence of down or 

 hairs, but has not much garden value. 



R. TRICOLOR, Franchet. 



(R. polytrichus, Franchet?) 



A quite prostrate, deciduous shrub with round stems, quite devoid of 

 prickles and spines, but densely clothed with yellow-brown bristles about 

 \ in. long. Leaves simple, heart-shaped, 3 or 4 ins. long by two-thirds as 

 much wide, irregularly toothed, pointed, dark green above, covered with a 

 close whitish felt beneath ; there are about seven pairs of parallel veins, 

 which on the under- surface are furnished with bristles, but on the upper 

 surface the bristles are confined in rows between the veins. Leaf-stalk i to 

 i J ins. long, bristly like the stems. Flowers white, i in. across, produced 

 singly in the leaf-axils near the end of the shoot, and in a small terminal 

 panicle. Fruit bright red. and of good size and flavour. 



Native of W. China ; first discovered by the French missionary Delavay, 

 but introduced to cultivation by Wilson in 1908. It is remarkably distinct on 

 account of the very bristly stems and leaf-stalks. Coming from elevations up 

 to 10,000 ft. it ought to prove hardy. 



R. TRIFIDUS, Thunberg? 



(Revue Horticole, 1908, fig. in.) 



An evergreen or sub-evergreen shrub, with erect stems, 4 to 7 ft. high, 

 zigzagged towards the top, not (or but little) branched the first year, beset 

 with glandular hairs at first, but soon becoming smooth. Leaves dark 

 lustrous green, usually five- or seven-lobed, 4 to 10 ins. across ; the lobes 

 reach half or two-thirds of the way to the stalk, are ovate, pointed, doubly 

 toothed, slightly hairy on the chief veins above and below ; stalks i to 2i ins. 

 long. -Flowers i to i ins. wide, rosy- white, produced singly in the terminal 

 leaf-axils and in a few-flowered, terminal corymb, each on a downy stalk J 



