456 WILSON EXPEDITION TO CHINA 



high) ; without precise locahty, heath, alt. 3600-4500 m., August 1903 

 (Veitch Exped. No. 3547); shrub 1-1.60 m. high. Western Kansu : 

 Min-chou, Tow River, alt. 3300 m., 1911, and Min-chow and Choni 

 districts, 1911, W. Purdom (No. 791). 



This variety differs chiefly in its pubescent inflorescence from the type and from 

 S. laevigata, var. croatica Schneider, but resembles the latter in habit and in the 

 narrow, indistinctly veined leaves, though in the var. croatica they are always obtuse 

 and sometimes even emarginate, while in the var. angustata they are hardly ob- 

 tuse and rather gradually narrowed into the mucronate apex; in the type the 

 leaves are always distinctly oblanceolate or even oblong-obovate and are some- 

 times 2.5 cm. broad by 9 cm. long. A plant raised from Chinese seed collected 

 by Mr. Wilson agrees in the shape of the leaves with the Chinese herbarium 

 specimens, but the inflorescence is glabrous or nearly so, which would tend to show 

 that this character is not to be depended upon. Among Purdom's specimens I also 

 find a single branch with a glabrous inflorescence, while all the others were distinctly 

 villose. 



I have retained the speciflc name laevigata for the plant, as I am not convinced 

 that the volume which contained Laxmann's description was published earlier 

 than Linnaeus' Mantissa, which appeared in October 1771. Laxmann read his 

 paper at the June meeting, 1771, of the St. Petersburg Academy, but the volume 

 containing his paper and dated 1771 was probably published not much before the 

 end of that year. (See also Ascherson in Sitzb. Ges. Naturf. Freunde, Berlin, 1905, 

 220). 



EXOCHORDA Lindl. 

 Determined by Alfred Rehder. 

 Exochorda racemosa Rehder, n. comb. 



Amelanchier racemosa Lindley in Bot. Reg. XXXIIII. sub t. 38 (1847). 



Spiraea grandiflora Hooker in Bot. Mag. LXXX. t. 4795 (1854). — Planchon 

 in Fl. des Serr. IX. 247, t. 954 (1854). 



Exochorda grandiflora Lindley in Gard. Chron. 1858, 925. — Hance in Jour. 

 Bot. XVI. 10 (1878). — S. Moore in Jour. Bot. XVI. 138 (1878). — Maxi- 

 mowicz in Act. Hort. Petrop. VI. 230 (1879). — Lavall6e, Icon. Arb. Segrez. 

 37, t. 11-12 (1880). — Hemsley in Jour. Linn. Soc. XXIII. 228 (1887).— 

 Schneider, III. Handb. Laubholzk. I. 494, fig. 301 (1905). 



Chekiang: Ningpo, 1908, D. Macgregor. Kianghuai: Nanking, 

 Barchet (No. 229) ; without precise locality, E. Faher. Also in Kiangsu. 



Exochorda racemosa, var. Wilsonii Rehd., n. var. 



A typo recedit praecipue foliis, floribus, fructibus majoribus, petalis 

 angustioribus basi sensim et longe angustatis. Folia obovata, ovalia 

 V. elliptica, interdum supra medium dentata, ad 7 cm. longa et 3.5 

 lata. Petala ad 2.5 cm. longa. Fructus turbinatus, 1.5 cm. longus. 



Western Hupeh: Hsing-shan Hsien, cliffs, alt. 600-1300 m., May 

 25 and October 1907 (No. 397, in part, type; bush 2-3.25 m., flowers 



