SAXIFRAGACEAE. — HYDRANGEA 25 
HYDRANGEA L. 
Determined by ALFRED REEDER. 
Hydrangea umbellata Rehder, n. sp. 
Frutex metralis v. paullo altior ramulis fusco-purpureis, novellis 
crispule pubescentibus, annotinis cortice laevi sine lenticellis, demum 
in lamellas tenues solubili. Folia membranacea, oblongo-lanceolata 
v. obovata, acuminata, basi cuneata, 5-9 cm. longa et 2-3 cm. lata, 
denticulato-serrata basi excepta, supra luteo-viridia, glabra costa 
sparse villosa excepta, subtus glaucescentia, sparse ad venas densius 
strigillosa et in axillis venarum barbata; petioli crispule pubescentes, 
6-13 mm. longi. Inflorescentia umbelliformis multiflora, in apice 
ramulorum sessilis, crispe pubescens, plerumque 5-radiata, pedicellis 
circa 5 mm. longis; flores fertiles desunt; flores radiantes steriles 
graciliter pedicellati, persistentes, 4—sepali sepalis late ellipticis v. sub- 
rotundatis, crassiusculis, plus minus dentatis, 2-2.5 cm. longis et in- 
terdum ad 2.5 em. latis. Capsula (immatura) semisupera, cum stylis 
6 mm. longa, parte superiore libera paullo longiore quam tubus calycis 
pilis erispulis sparsis adspersi; styli 3, partem liberam capsulae sub- 
aequantes, sat graciles; semina late elliptica, exalata. 
Kiangsi: Kuling, thickets, common, alt. 1200 m., July 29, 1907 
(No. 1605). 
Closely related to H. scandens De Candolle (H. virens Siebold), which differs 
chiefly in its smaller sparingly toothed leaves, in the few-flowered cymes with the 
sterile flowers with three deciduous entire sepals, in the smaller capsules with 
longer styles and in its lax habit with very slender often drooping branches. 
Hydrangea Davidii Franchet in Nouv. Arch. Mus. Paris, sér. 2, 
VIII. 227 (Pl. David. II. 44) (1885). 
Western Szech'uan: Mupin, thickets, alt. 1800-2250 m., June 
and October 1908 (No. 1159), alt. 2400-2700 m., October 1910 (No. 
4343); alt. 1500-1800 m., Nov. 1908 (No. 1249); Wa-shan, thickets, 
alt. 1500-2100 m., June and November 1908 (No. 1159 ); without 
locality, alt. 1500-2400 m., July 1903 (Veitch Exped. No. 3563). 
Wilson’s specimens differ from Franchet’s description slightly in having usually 
4 sepals and in the leaves being up to 6 cm. broad. The capsule, which is not 
described by Franchet, is subglobose, 2-3 mm. in diameter, the free part longer 
than the tube of the calyx; the seeds are broadly elliptic, wingless, scarcely 1 mm. 
long and light yellowish brown. í 
Hydrangea paniculata Siebold in Nov. Act. Acad. Leop. Carol. XIV. 
pt. ii. 690 (Syn. Hydrang.) (1829). 
