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PB ACTIO AL GUIDE TO GARDEN PLANTS ptekocabya 



rate leaflets, unequal at the base, and 

 somewhat downy. Flowers in spring, 

 greenish. Fruit round, roughish, with 

 minute projections on the husk. 



Culture dc. as above. This species 

 has also been crossed with J, regi0 and 

 has produced a hybrid called J. pyri- 

 formis. 



J. regia (Common Walnut Tree). — 

 A beautifal and well-known nut and 

 shade tree 40-60 ft. high, native of Persia. 

 Leaves consisting of 5-9 oblong oval 

 smooth, obscurely serrate bright green 

 leaflets 6-8 in. long. Flowers in spring, 

 greenish. Fruit egg-shaped, with a green 

 husk, and containing a wrinkled bony 

 nut, which forms an important article of 

 commerce. There are several varieties of 

 the Common Walnut, among which may 

 be mentioned elongata (or harteria/na), 

 which has much longer nuts than the 

 ordinary type ; longirostris is an extra- 

 ordinary variety, easily recognised by the 

 fruits being prolonged into a long beak. 

 Other forms are lacmiata, monophylla, 

 and pendula. 



Culture (to. as above. 



J. sieboldiana. — An ornamental Ja- 

 panese tree, having thin, soft, shortly 

 toothed BessUe leaflets, green above, paJe 

 beneath. Flowers in spring, greenish, 

 the males in long slender catkins. Fruit 

 violet-red when young, woolly, and borne 

 in drooping clusters. 



Culture dc. as above. 



PTEROCARYA. — ^A genus with 3 or 

 4 species of ornamental trees with large 

 leaves pinnately divided into numerous 

 narrow leaflets. Flowers monoecious in 

 long drooping spikes. Perianth of the 

 male flowers irregularly 3-6-lobed. Sta- 

 mens 9-18 on a linear torus. Perianth 

 of the female flowers adnate to the ovary, 

 with a free shortly 4- cleft limb. Drupe 

 dry, angled, having 2 wings. Seeds 

 4-lobed at the base. 



Culture and Propagation. — Ptero- 

 caryas flourish under similar conditions 



to the Hickory and Walnut, and may be 

 increased in the same way from seeds, and 

 also by suckers and layers. 



P. caucasica (P./raximifoUa). — A fine 

 ornamental tree 20-40 ft. high, native of 

 the moist woods of the Caucasus. Leaves 

 12-18 in. long, resembling those of the 

 Walnut, and composed of about 15 oblong 

 lance-shaped, smooth, and sharply serrate 

 leaflets, each 3-4 in. long, and remarkable 

 for their clear yellow colouring in autumn. 

 Flowers in May, greenish, borne in droop- 

 ing spikes or catkins, the female ones 

 being 10-12 in. long, and the males about 

 half that length. 



Culture dc. as above. This is the 

 best known species in cultivation. 



P. rhoifolia (P. japonica; P. sorbi- 

 foUa). — An ornamental tree, native of 

 Japan, where it grows at an elevation of 

 2500 to 4000 ft. above sea-level, and 

 often reaches a height of 80 ft. The 

 leaves are 9-12 in. long, with a woolly 

 rachis or main midrib, to which the 

 downy leaflets, each 2-4 in. long, are 

 attached. Flowers have not yet been 

 produced in British gardens, I believe, 

 but in a wild state the females are borne 

 in catkins about 10 in. long, while the 

 male ones are on catkiDs only 2-3 in. 

 long. 



Culture dc. as above. As this tree 

 has not been introduced to ctdtivation 

 many years, there are yet no folly grown 

 specimens of it, but it promises to become 

 as ornamental as P. coMcasica. 



P. stenoptera (P. cMnensis). — ^A noble 

 and ornamental tree, native of N. China, 

 with leaves 10-15 in. long, and composed 

 of 15-21 leaflets, between which the 

 intervening portions of the main midrib 

 (or rachis) are winged — a character which 

 at once distinguishes this species from 

 the others. The male and female catkins 

 are about the same length as those of 

 P. rhoifolia, and the roundish fruits 

 are furnished with 2 side wings, each 

 more than an inch long. 



Culture dc. as above. 



CVII. MYRICACEiE— Sweet Gale Order 



An order of trees or shrubs, often aromatic, with alternate feather-veined, 

 entire, serrate, irregularly toothed or lobed, or regularly pinnatifid leaves and 

 no stipules, except spurious ones in Myrica asplenifolia. Flowers 1-sexed ; 

 males in short cylindrical spikes ; females in ovate sessile catkins. Perianth 



