TREES AND SHRUBS. 



YIBTTKNTTM SHEKSIAKUM, Maxim. 



Viburnum shensianum, Maximowicz, Bull. Acad. Sci. St. Petersbourg, xxvi. 480 (1880); Mel 



Biol. x. 653. — Hemsley, Jour. Linn. Soc. xxiii. 355. 

 Viburnum Dielsii, Grabner, Engler Bot. Jahrb. xxix. 588 (1900). 

 Viburnum Giraldii, Grabner, Engler Bot. Jahrb. xxxvi. Beibl. No. lxxxii. 99 (1905). 



Leaves membranaceous, oval or ovate to elliptic, obtuse or acutisb, rounded or broadly cuneate 

 at tbe base, denticulate, dark yellowish green and glabrous or furnished with scattered fasciculate 

 hairs on the upper surface, paler green and more or less covered with yellowish stellate tomentum 

 on the lower surface, from 2 to 5 centimetres long and from 1.2 to 3.5 centimetres broad, with five 

 or six pairs of veins usually anastomosing, but sometimes partly ending in the teeth, indistinct 

 above and elevated beneath, and inconspicuous veinlets; petioles grooved, from 5 to 10 milli- 

 metres in length, stellate-pubescent. Corymbs terminal, from 5 to 8 centimetres in diameter, 

 covered with dense yellowish stellate pubescence, on peduncles from 3 to 15 millimetres long, 

 rarely longer; sometimes nearly sessile; rays usually five, the central one the shortest; flowers on 

 rays of the third or sometimes of the second order; ovary cylindric, 4 millimetres long, glabrous; 

 calyx-teeth triangular-ovate, very short ; corolla campanulate-rotate, about 6 millimetres in diame- 

 ter, glabrous, the lobes ovate, somewhat longer than the tube ; stamens as long or somewhat 

 exceeding the corolla ; anthers broadly oval, yellow ; style conical, short, scarcely longer than the 

 calyx-teeth. Drupe ellipsoid-oblong, bluish black, crowned by the persistent calyx-teeth; stone 

 oblong, from 8 to 9 millimetres long and 4.5 millimetres broad, convex on the dorsal side, with 

 three ventral grooves, the two lateral often very shallow; seed covered with red resinous glands. 



A shrub, with slender forked branches, and branchlets stellate-pubescent while young, becoming 

 gray or grayish brown in their second year, and ultimately gray, and usually marked by a few 

 scattered lenticels. Winter-buds naked. Flowers appear with the leaves. 



China: Shensi, Piasezki, 1875 (Herb. St. Petersburg), G. Giraldi (Nos. 142, 144-149, 2563- 

 2581, 7199, 7200 in Herb. Florence); Szech'uan, A. von Rosthorn (Nos. 1885, 1887, 1891 in 

 Herb. Christiania). 



Viburnum shensianum is most closely related to Viburnum burejcetieum, Regel & Herder, and to Viburnum 

 ghmeratum, Maximowicz ; from these species it is easily distinguished by the quite glabrous ovary, the narrower and 

 longer fruits, and by the convex dorsal side of the stone. The leaves are generally smaller and more obtuse than those 

 of Viburnum burejcetieum, but in Rosthorn's Nos. 1887 and 1891 they can hardly be distinguished from the leaves of 

 that species, while the leaves of Viburnum glomeratum are more strongly veined, the veins ending in the teeth. With 

 the type specimens of Viburnum shensianum, Viburnum Dielsii, and Viburnum Giraldii before me I am unable to 

 find a single good character by which these plants can be distinguished ; Rosthorn's No. 1885 agrees in every respect 

 -with Piasezki's specimen, while Giraldi's specimens differ slightly in the more pubescent upper surface of the leaves 

 and in the generally longer peduncles. The chief distinctive character given by Grabner for his Viburnum Giraldii 

 is " corolla campanulato-infundibuliformis, staminibus subinclusis," but I find the corolla rotate-eampanulate, with the 

 tube shorter than the limb, exactly as in his Viburnum Dielsii, and the stamens in Giraldi's specimens are really as 

 long at least as the corolla. I also refer provisionally to this species Faber's No. 1545 (in Herb. Kew), which differs 

 in its larger inflorescence, larger flowers, and larger leaves more densely pubescent on the two surfaces and more 

 strongly veined. 



Alfred Rehder. 



