456 WILSON EXPEDITION TO CHINA 
high); without precise locality, 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 
distriets, 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 em. 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 isnot 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 specific 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 r 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- 
mowiez in Act. Hort. Petrop. VI. 230 (1879). — Lavallée, Icon. Arb. Segrez. 
37, t. 11-12 (1880). — Hemsley in Jour. Linn. Soc. XXIII. 228 (1887).— 
Schneider, ZU. Handb. Laubholzk. I. 494, fig. 301 (1905). 
Chekiang: Ningpo, 1908, D. Macgregor. Kianghuai: Nanking, 
Barchet (No. 229) ; without precise locality, E. Faber. Also in Kiangsu. 
Exochorda racemosa, var. Wilsonii Rehd., n. var. d 
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 
