4 49. SAXIFRAGACEJE, 
Disrump. West Asia to Europe, and eastward to Japan; but not yet 
found in Central China. 
4. Hydrangea Lix. 
Key to the Formosan. Species. 
(1) Leaves quite entire. (2) 
Leaves more or less serrate. (9) 
(2) Leaves elongately oblong nearly 20 em. long. ............ H. inlequa., 
Leaves shortely oblong, shortely cuspidate, less than 6 em. . H. infegrifolia. 
(9) Leaves distinctly serrulate or serrate. (4) 
Leaves obseurely or remotely serrate, subentire or dentately serrate, 
quiterelabrous.. 6 oe coU. DPEREERER DU .H.. chinensis. 
(4) Leaves glabrous, ovately oblong:; petaloidal sepals 4, entire, rounded, 
emarginale. ...1 d aT eee et RUE CLIE H. glabra. 
Leaves hirsute lanceolate or oblong. (5) 
(5) Leaves elongately lanceolate. (6) 
Leaves ovate acuminate ; petaloidal sepals 4, serrate . .. . H.. Keawakemit. 
(6) Petaloidal sepals rounded obseurely serrate. .........L.. H. longifolia. 
Petaloidal sepals oblong quite entire... .......... LL. H. angustisepala. 
Hydrangea angustisepala Havsra Materials for à. Flora of Formosa 
p. 107. — H. angustifolia HsxrA. Ic. Pl. Formos. Fasc. I. Pl. XXXII. 
Scandent shrub? — Pranches — subglabrous — downward, ^ fusco-rubescent 
cinereo-tomentose upward. Leaves opposite, long  oblong, or broadly 
laneeolate, 12 cm.long, 34cm. broad, serrate,  serras  ascendent, hispid 
above, villosely tomentose  pallid — beneath, petioles 1lem.long. | Cyme 
terminal 7 em. long as broad, branches slightly tomentose. Marginal flowers 
sterile, long pedicellate, pedicels 1i em.long; sepals 4, petaloid, unequal, 
outer ones longer, obovate, 14 mm. long 6 mm. broad, acute at the base, 
margin obscurely dentate, inner ones smaller, 5 mm. long 9 mm. broad. 
Fertile flowers: sepals 5, lanceolate, 2 mm.long, tomentose, obtuse at the 
apex, pelals 5, longer than sepal, !'ong obovate obtus at the apex.  Stamens 
10, nearly 3 mm. long, anthers broadly orbieular, retused at both ends. 
Ovary nearly superior or half-superior, styles 2-5, 1j mm. long. 
