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 elUptic 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, Rev. Nov. Sp. II. 81 (1910); III. Handh. 

 Lauhholzk. 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. III. 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. Wilsonii 

 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. Foha membranacea, elliptico-lanceolata v. elHptico-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 cm. 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 f aucem baud attingentes, paUidae; stylus 4 mm. 

 longus. Fructus 16 mm. longus, acutus, apicem versus distincte 

 verrucosus. 



Western Szech'uan: Tachien-Iu, 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. 



