Tas. 8399. 
SPIRAEA Witsont. 
Central China, 
RosackaAE. Tribe SpsRAEEAE. 
Spmmana, Linn.; Benth, et Hook, f. Gen. Plant. vol. i. p. 611. 
Spiraea (Chamaedryon) Wilsoni, Duthie in Hort. Veitch. (1906), p. 379; 
gp.cies e grege S. cunescentis, D. Don, sinensibus §. Henryi, Hemsl. et 
S. Veitchi7, Hemsl. quam maxime accedens, ab hac foliis pubescentibus 
ramulisque floriferis abbreviatis facillime sejungenda, ab illa foliis integiis 
vel paucidentatis pedunculis pedicellisque fere glabris apte distinguenda. 
Frutex ornatus 2-2°5-metralis, arcuatim ramosus ramis elongatis; ramuli 
_-:pnrpurascentes, pubescentes. olia alterna, decidua, firmula, ovata vel 
obovata vel oblonga, subacuta vel obtusa, basi cuneata, margine praesertim 
in ramulis floriferis integra vel apicem versus pauci-dentata, 2-3 cm, 
longa, 1-2°5 cm. lata; supra opaca, cinereo-puberula, subtus pallidiora, 
pubescentia, ciliata; petiolus 3-L mm. longus. Corymbi compacti, sub- 
globosi, in ramulis floriferis lateralibus terminales, pluriflores, 4-5 cm. 
diametro; pedunculi pedicellisque parce pilosi vel omnino glabri. Fores 
albi, U°6 cm. lati. Ca’yx 5-lobus; lobi triangulares, margine ciliati, 
ecterum glabri, tubo campanulato glabro breviores. Peta/a 5, sub- 
orbicularia. Carpelia 5, 2°5 mm. longa, membranacea, minute pilosa, e 
latere ventrali dehiscentes.—W. J. Bran. 
The subject of our piate is one of a well-defined group of 
three clesely allied Chinese Spiraeas added to European 
collections during recent years. The group as a whole is 
nearly related to the Himalayan S. canescens, D. Don, which 
has long been familiar in our gardens. But while readily 
distinguishable from that Himalayan shrub, the members 
of this Chinese group, which includes S. fHenryi, Hemsl., 
figured at t. 8270 of this work, S. Veitehii, Hemsl., figured 
at t. 8383, and S. Wilsoni, the species now depicted, 
approach each other more closely, and while all three are 
fully entitled to separate recognition, at least, from the 
horticultural standpoint, some care will be called for in 
their discrimination in cases where the types are not grown 
side by side. The three plants appropriately commemorate 
the names of individuals who have played leading parts in 
the discovery and introduction to Europe of plants from 
Central and Western China. S. Veitchii will always be 
easily distinguished from S. Wilsoni by its glabrous entire 
leaves, its much longer flowering branches and its finely 
Octoser, 1911. . 
