300 WILSON EXPEDITION TO CHINA 
This seems to be an extremely beautiful shrub, most nearly related to S. tomen- 
tella Franchet, but the dense pubescence of the branches and the very short petioled 
broad elliptic leaves distinguish S. Rehderiana at once from the allied species. 
Syringa tomentella Bureau & Franchet in Jour. de Bot. V. 103 (April 
1891). — Schneider in Fedde, Rep. Nov. Sp. II. 81 (1910); IU. Handb. 
Laubholzk. II. 782, fig. 489 a, 490 i-k (1911). 
Syringa velutina Bureau & Franchet in Rev. Hort. 1891, 308, 333 (non Koma- 
row) (July 1891). 
Syringa Emodi var. pilosissima Schneider in Wien. Ill. Garten-Zeit. XXVIII. 
107 (1903). 
Western Szech’uan: Pan-lan-shan, west of Kuan Hsien, thick- 
ets, alt. 3700 m., June 1908 (No. 2584; bush 1.5-3 m., high, flowers 
rose-pink); Tachien-lu, thickets, alt. 3000 m., July 1908 (No. 1273°; 
bush 4-5 m. high, flowers white or pink); same locality, October 1910 
(No. 4408; bush 3-5 m. high). 
Wilson's specimens differ from typical S. tomentella Bureau & Franchet. in their 
glabrous calyx and less hairy inflorescence, and approach in this respect S. Wilsonit 
Schneider, but are easily distinguished from that species by the pubescent lower 
surface of the leaves. 
Syringa Wilsonii Schneider, n. sp. 
Frutex 2-7-metralis; ramuli glabri, lenticellis albidis conspersi; 
gemmae ovato-acutae, glabrae, terminales 8 mm. longae et 4.5 mm. 
latae. Folia membranacea, elliptieo-lanceolata v. elliptico-ovata, 
acuminata, basi cuneata, in petiolum decurrentia, rarius fere rotun- 
data, 6-12 longa, 2.5-6 cm. lata, supra laete viridia glabra, subtus 
. tantum versus basin secus costam nervosque laxe villosa; petioli 
circiter 1 cm. longi, glabri v. fere glabri. Inflorescentia terminalis ad 
15 cm. longa et ad 10 em. lata, glabra v. fere glabra pedicellis tantum 
breviter sparse pilosis; flores albi v. lilacini; calyx glaber v. basi tantum 
sparse pilosulus, 1.5 mm. longus, fere truncatus v. 4-dentatus dentibus 
brevibus obtusis; corollae tubus 8-10 mm. longus, apicem versus 
breviter dilatatus, laciniae oblongae, 4-5 mm. longae, demum patentes 
et reflexae; antherae faucem haud attingentes, pallidae; stylus 4 mm. 
longus. Fructus 16 mm. longus, acutus, apicem versus distincte 
verrucosus. 
Western Szech’uan: Tachien-lu, thickets, alt. 2500-3300 m., 
June and October 1908 (No. 1273). 
: Closely allied to S. tomentella Franchet which differs chiefly in the pubescent 
inflorescence, the pubescent lower surface of the leaves and in the nearly smooth 
fruit 13-14 mm. long. 
