136 PHILADELPHIA 



upper surface set with sparse minute hairs, the lower one thickly covered 

 with appressed pale, stiff hairs giving it a dull grey hue ; stalk T V to 

 in. long, bristly. Flowers white, fragrant, about I in. across, produced 

 five to nine (usually seven) together on racemes about 2 ins. long, at the 

 end of leafy shoots of about the same length. Petals roundish ; style 

 about the average length of the stamens, smooth, divided quite half-way 

 down. Calyx and flower-stalk shaggy, like the under-surface of the leaves. 

 Fruit top-shaped, f in. long. 



Native of Hupeh and Szechuen, China ; discovered by Henry about 

 1887 ; introduced by Wilson in 1904. The plants at Coombe Wood flower 

 late from middle to late July and the species is desirable on that account. 

 It is also charmingly fragrant with an odour like that of hawthorn. It differs 

 from P. Magdalenas in its glabrous style. 



P. SERICANTHUS, Koehne. This is, perhaps, most nearly allied to P. 

 incanus, but has narrower leaves with only scattered hairs beneath and 

 tufts of pale down in the vein-axils ; there are also fewer teeth (three to nine) 

 on each margin. The calyx is bristly hairy and the style is smooth and 

 divided, as in incanus, and the other floral characters are very similar. 

 Native of China ; discovered by Henry in Hupeh, about 1888. Introduced 

 to France by Mr Maurice de Vilmorin in 1897, and to England by Wilson 

 three years later. 



P. INODORUS, Linnceus. 

 (Bot. Mag., t. 1478.) 



A shrub of compact habit, 4 to 6 ft. high, usually more in diameter ; 

 bark smooth, peeling the second year, of a chestnut-brown colour. Leaves 

 ovate, with a rounded base and a fine point ; i to 4 ins. long, f to 2 

 ins. wide ; sparsely and inconspicuously toothed ; dark glossy green, with 

 pale, appressed hairs above ; paler, also glossy beneath, with only a 

 few hairs on the veins. Flowers solitary, not scented, produced at the 

 end of short twigs, pure white, 2 to 2^ ins. across, petals overlapping, making 

 the flower square in outline, with rounded corners. 



Native of the south-eastern United States ; introduced in 1738. For 

 long this shrub was lost to cultivation, although many spurious plants 

 were sold under the name. Through the Arnold Arboretum the true thing 

 is again in gardens one of the finest and most striking of the genus. 

 It is distinguished by its glossy dark green leaves, and solitary, large, 

 squarish flowers. Allied to P. grandiflorus, it differs in its less dentate, 

 shorter pointed leaves and more abruptly pointed calyx. 



P. INSIGNIS, Carrier e* 



(P. " Souvenir de Billiard " ; P. Billiardi, 



The origin of this handsome mock orange is not known, but it is probably 

 a hybrid in whose origin P. grandiflorus has shared. It is a vigorous bush 

 up to 10 or 12 ft. high ; young shoots smooth or nearly so ; bark of year- 

 old ones not peeling. Leaves ovate or sometimes heart-shaped ; \\ to 3^ 

 ins. long, ij to 2^ ins. wide ; minutely and sparsely toothed, smooth and 

 glossy green above, shaggy with pale hairs beneath. Flowers faintly 

 perfumed, pure white, cupped, a little over i in. across, produced during 

 late June in leafy terminal panicles of fifteen to over twenty blossoms. Petals 

 roundish, f in. long, overlapping ; calyx and flower-stalk hairy outside ; 

 style shorter than the stamens, divided just below the stigmas. 



Although cultivated for over forty years, this is not much grown in 



