Tap. 8447. 
HYDRANGEA SARGENTIANA, 
China. 
SAXIFRAGACEAR. Tribe HYDRANGEAE. 
Hyprancka, Linn. ; Benth. et Hook. f. Gen. Plant. vol. i. p. 610. 
Hydrangea Sargentiana, Rehder in Sargent, Pl. Wilson. pars i. p. 29; 
species H. Rosthornii, Diels, proxima, sed caulis indumento rudi, floribus 
paullo minoribus, sepalis florum sterilium integris distinguendum. 
Frutex ad 2 m. altus, ramis superne villis rudibus et setulis intermixtis 
obtectis. Folix ovata, breviter acuminata, basi cordata vel rotundata, 
inaequaliter crenata crenis latiusculis apiculatis, 15-30 cm. longa, 6°5-16 
cm. lata, supra obscure viridia, adpresse strigosa, subtus laxe strigoso- 
tomentosa; petioli pubescentes villis rudibus hinc inde admixtis, Corymbus 
densus, 12-16 cm. diameiro, axibus omnibus pubescenti-tomentosis 
primariis praeterea pilis longioribus et hine inde villis rudibus obsitis ; 
radii primarii suboppositi ad 12 vel 13, ad 7 em. longi; bracteae mox 
deciduae, lanceolatae, acuminatae, dense strigillosae; pedicelli florum 
fertilium ad 2 mm. longi, graciles, sterilium ad 15 mm. longi. //ores 
fertiles ante ipsa anthesi 2°5-3 mm. diametro, violascentes, depresso- 
globosi. Receptaculum turbinatum, 1 mm. longum, subglabrum. Sepala 
late triangularia, 0°5 mm. longa. P+ta/a mox decidua, oblongo-ovata, 
vix 2 mm. longa. Staminum filamenta breviora petala aequantia, majora 
ea subduplo superantia. Ovarium subinferum; styli 2 vel 3. Capsula 
(ex autore) hemisphaerica, leviter 10-12-costata, 3 mm. diametro. 
Semina elliptica, utrinque in alam brevem contracta, striata, circa 0:7 mm. 
longa. Flores steriles radiantes, 2°5-3°5 cm. diametro, albi, sepalis late 
obovato-orbicularibus integris in dorso laxe strigilloso-pilosis.—O. STAPF. 
The Hydrangea which forms the subject of our plate was 
discovered in China by Mr. E. H. Wilson, at Hsing-Shan- 
Hsien, Western Hupeh, at about 5000 to 6000 feet above 
sea-level, in 1907. A share of Wilson’s seeds was pre- 
sented to Kew by Professor Sargent, Arnold Arboretum, 
early in 1908; from these seeds was raised the plant which 
has supplied the material for our figure. 1. Sargentianais 
readily recognisable, and from a cultural standpoint is very 
distinct owing to the conspicuously bristly covering of its 
stems and petioles, though apart from this rather striking 
feature there does not appear to be much to distinguish it 
from its nearest ally, 7. Rosthornii, Diels, another Chinese 
form, which appears to serve as a connecting link between 
our plant and the Himalayan //. robusta, Hook. f. & Thoms. 
H. Sargentiana does not give promise of being one of the 
Avaust, 1912. 
