108 WILSON EXPEDITION TO CHINA 



cality (Veitch Exped. No. 1382); no locality, A. Henry (No. 6543). 

 Eastern Szech'uan: South Wushan, A. Henry (No. 5691). 



From the Szech'uan form this variety differs chiefly in its glabrescent leaves, 

 the slender and loose inflorescence with part of the flowers on slender pedicels, 

 the saucer-shaped calyx with very broad, often obsolete, teeth, the yellow anthers 

 and the narrower fruits. Some specimens, however, as Nos. 1814 and 1824, ap- 

 proach in their narrower and more pubescent leaves the Szech'uan form, but they 

 have yellow anthers, while some Szech'uan plants have a saucer-shaped calyx like 

 var. gracili-pes} 



Viburnum brachybotryum Hemsley in Jour. Linn. Soc. XXIII. 349 

 (1888). 



Western Hupeh: ravines around Ichang, alt. 30-300 m., March 

 20 and July 1907 (No. 1840). 



Wilson's flowering specimen bears on its label the note "flowers white function- 

 ally dioecious " and consists of two branches apparently from different plants and 

 showing two kinds of flowers. One of the branches bears a terminal many-flowered 

 panicle with the peduncle 6.5 cm. long; the corolla does not seem to be fully de- 

 veloped, the lobes are upright and sHghtly incurved, not spreading, the rudimentary 

 stamens are about 1 mm. long with deformed dark colored and empty anthers, and 

 the short thick style bears a large capitate three-lobed stigma. The other branch 

 bears two small panicles, 1.5 and 2.5 cm. long, in the axils of the leaves of the pre- 

 ceding year; the corolla is rotate, about 6 mm. in diameter, with spreading lobes; 

 the stamens are 4 mm. long and exceed somewhat the corolla-lobes, with yellow 

 oval pollen-bearing anthers; the style is reduced to its conical base with three minute 

 blunt points at the apex; the ovary is smaller and apparently sterile. As I have 

 seen no other flowering specimen of the species I do not know whether dioecious 

 flowers are the rule or whether this is only an abnormal case. No other species in 

 the genus Viburnum is known to have diclinous or incompletely diclinous flowers. 



Viburnum oliganthum Batahn in Act. Hort. Petrop. XIII. 372 

 (1894). 



Western Szech'uan: Wa-ssu country, Wen-chuan Hsien, thickets, 

 alt. 1500-1800 m., July and October 1908 (No. 1031); Mupin, thickets, 

 alt. 1200-2250 m., May and August 1908 (No. 805^. 



* In connection with these varieties another very distinct variety of V. eru- 

 bescens from Upper Burma may be described here: 



Viburnum enibescens, var. bunnanicum Rehder, n. var. 



Folia chartacea, glabra, oblonga, basi rotundata, apice subito in acumen longum 

 falcatum producta, remote denticulata, 10-12 cm. longa et 4.5-5.5 cm. lata, supra 

 obscure viridia, subtus pallidiora, utrinsecus 6-costata costis curvatis anasto- 

 mosantibus trabicuUs parallelis conspicuis conjunctis. Panicula glabra, longe 

 pedunculata, late pyramidalis, 6-8 cm. diam. et 4-6 cm. longa; corolla infun- 

 dibuhformis limbo patulo, antheris flavis semiexsertis. 



Upper Burma: Kachin Hills, 1898. Shaik Mokim (Ex. Herb. Hort. Calcutt. in 

 Herb. Arnold Arboretum). 



This very distinct form is easily recognized by its chartaceous perfectly oblong 

 and quite glabrous remotely denticulate leaves and by the very broad and short 

 inflorescence. 



