CAPRIFOLIACEAE. — VIBURNXJM 107 



27 and August 1907 (No. 1815); Fang Hsien, uplands, June 1907 

 (No. 1814, as to the flowers). 



Wilson's Nos. 1814 and 1815 appear to be intermediate between V. Henryi and 

 V. erubesccns, and this together with the fact that these two species grow in the 

 same locality where the specimens in question were collected seems to point toward 

 a hybrid origin of these plants. The corolla is infundibuliform, but short, the 

 tube being but little longer than the limb, while in V. Henryi it is shorter, and in 

 V. erubesccns about twice as long as the limb. The inflorescence is more like that 

 of the tyi)ical V. erubesccns. The leaves are membranaceous like those of V. eru- 

 besccns, but are remotely serrulate or denticulate as in V. Henryi, which differs 

 in its sul)coriaceous generally narrower leaves, while the first named species is 

 distinguished by its crenately serrate generally broader leaves. 



Viburnum erubesccns Wallich, Plant. As. Rar. II. 29, t. 134 (1830). 



The Chinese specimens of V. erubesccns differ in several respects from the Nepal 

 forms as described by Wallich, and may be here treated as varieties as follows: 



Viburnum erubescens, var. Prattii, n. var. 

 Viburnum Prattii Graebner in Bot. Jahrb. XXIX. 584 (1901). 



Western Szech'uan: Tachien-lu, upland, alt. 2700 m., July and 

 September 1908 (No. 1827); Wa-ssu country, Wen-chuan Hsien, 

 thickets, alt. 1800-2100 m., June and September 1908 (No. 805); 

 Nin-tou-shan, west of Kuan Hsien, alt. 2250 m., June 20, 1908 (No. 

 1824); Wa-shan, thickets, rare, alt. 2400 m., July 1908 (No. 1825); 

 Mupin, thickets, common, alt. 2100-2500 m., June 1908 (No. 1826); 

 northeast of Sungpan, woodlands, alt. 2100-2700 m., August 1910 

 (No. 4031). 



This variety differs from the type chiefly in its broader and larger, broadly 

 obovate or elliptic or rarely oblong-obovate leaves pubescent beneath, with the 

 pubescence persistent at least on the veins, and in its violet-purple anthers which 

 are yellow in the type. I have not seen the type specimen of Graebner's V. Prattii 

 from Tachien-lu, but his description agrees perfectly with Wilson's No. 1827 from 

 the same locality, and with the other specimen quoted here, as well as with 

 Giraldi's specimens cited by Graebner which I have seen. 



Viburnum erubescens, var. gracilipes Rehder, n. var. 



A typo recedit praecipue foliis latioribus plerumque ovalibus basi 

 rotundatis, inflorescentiis glabris laxioribus, elongatis, 7-12 cm. longis, 

 floribus partim graciliter pedicellatis, tubo corollae sensim ampliato, 

 calyce cupuliformi, fructibus angustioribus. 



Western Hupeh: Fang Hsien, thickets, common, alt. 1700-2400 

 m., June and September 1907 (No. 305, type); Fang Hsien, uplands, 

 Septem])er 1907 (No. 1814, in part, fruit); Hsing-shan Hsien, wood- 

 lands, alt. 1800-2700 m., June and October 1907 (No. 1828); no lo- 



