i6o6 The Trees of Great Britain and Ireland 



Leaves rarely lobed, deeply cordate at the base, shortly acuminate at the apex ; 

 margin ciliate ; lower surface pubescent throughout. 



2. Morus rubra, Linnaeus. North America. Seep. 1608. 



Leaves rarely lobed, slightly cordate at the base, contracted above into a long 

 acuminate apex ; margin slightly ciliate ; lower surface pubescent throughout. 



3. Morus alba, Linnaeus. China, Japan. See p. 1609. 



Leaves often lobed, variable in size and shape, thinner in texture than those 

 of the preceding species ; margin non-ciliate ; lower surface glabrous, except for 

 pubescence on the midrib and nerves. 



The following species, lately introduced, may be briefly noticed : — 



4. Morus cathayana, Hemsley, in Journ. Linn. Soc. {Bot.) xxvi. 456 (1894). 



A tree, about 20 to 30 ft. high. Young branchlets densely pubescent. Leaves 

 large, 4 to 5 in. long, ovate, cordate, cuspidate-acuminate, usually without lobes, 

 crenate in margin ; very scabrous above with minute blackish tubercles ; lower surface 

 softly pubescent throughout. Fruit, cylindric, i in. long ; styles as long as the ovary. 



This was discovered by me in 1888 in the mountain forests of western Hupeh 

 in China. It has lately been introduced by Wilson ; and a plant at Kew, 

 obtained from the Arnold Arboretum in 1907, is about 4 ft. high. (A. H.) 



MORUS NIGRA, Black Mulberry 



Morus nigra, Linnaeus, Sp. PI. 986 (1753); Loudon, Arb. et Frut. Brit. iii. 1343 (1838); Bentley 

 and Trimen, Medicinal Plants, t. 229 (1880); Willkomm, Forstl. Flora, 541 (1887); Mathieu, 

 Fl. Forestiire, 292 (1897). 



A tree, attaining about 50 ft. in height. Bark thick, fissured into broad scaly 

 plates. Young branchlets with a scattered downy pubescence. Leaves (Vol. IV. 

 Plate 267, Fig. i), subcoriaceous, 4 to 6 in. long, 3 to 5 in. wide, broadly ovate, 

 deeply cordate at the base, acuminate at the apex; upper surface dark green,' 

 shining, with scattered short pubescence ; lower surface pale green, covered through- 

 out with a short downy pubescence ; margin ciliate, with coarse triangular serrations ; 

 petiole I in. long, pubescent. Staminate spikes, | to 4 in. long. Pistillate spikes,' 

 i in. long, on a short pubescent peduncle ; style and stigmas pubescent. Fruit, about 

 I in. long, black, very shortly stalked. 



Lobed leaves 1 are rarely seen on adult trees, but are usual on root-suckers. 



The native country of the black mulberry cannot be ascertained with certainty ^ 

 It has been cultivated in southern Europe from a very early period, but there is no 

 evidence that it is indigenous in Italy or Greece. Boissier « and De Candolle * suppose 

 It to be truly wild in the districts in Persia, bordering on the Caspian Sea ; but 



<.^^^T^::^^^tS'"'' """'" """'■ ''■ '• ^°- ' ''''''■ ™^ ^= °"^^ ^" ^"^^^"^ -^-^-. -^ 



Medlptt ^r""""'' '^ "'""'' ""' ''"''"''' ''° ^'''''' ^^'^^' -^'^-' ^-S -y -'<^ence. that the .ulberry is a 



3 Ft. Orient, iv. 1153(1870). 4 ^ ■ ■ r^ , ■ 



^•'^ '^' ^ Origin of Cultivated Plants, \(,2 (x%%e). 



