Tas. 5038 
HYDRANGEA cYANemMa. 
Blue-stamened Hydrangea. 
Nat. Ord. SaxrrraGace®: Tribe HypRANGEH.—DECANDRIA TRIGYNIA. 
Gen. Char. (Vide supra, Tas. 4253.) 
HyDRANGEA cyanema; ramulis corymbosis petiolisque pubescentibus, foliis late 
ovatis grosse serrato-dentatis utrinque pubescentibus margine ciliatis, fl. im- 
perfect. sepalis 3-5 albis cuneato-ovatis grosse sinuato-crenatis, stylis 3-5 
liberis brevibus. 
HypRaNGEA cyanema. Nuét. MSS. 
One of the many interesting Himalayan plants introduced by 
Mr. Nuttall from Bhotan, where it was discovered by Mr. Booth. 
As a species it is exactly intermediate in characters between the _ 
H. robusta, H.f. and T., and /. stylosa, Hf. and T., both natives — 
of the adjoining province of Sikkim. It is indeed possible that 
cyanema may prove to be a variety of one of these, for the arbo- 
rescent species of Hydrangea (amongst which this no doubt will 
rank) are with difficulty recognized in a young state, and some 
of the most distinctive marks of the species reside in the capsules, 
which are in this plant not formed. Z. stylosa, with which H. 
cyanema accords perfectly in habit, foliage, and the sepals of the 
imperfect flowers, differs in having very slender subulate styles ; 
and H. robusta, with which Mr. Nuttall’s plant agrees in the 
colour of the peduncles, pedicels, calyx, stamens, etc., and in the 
form of the styles, is a very robust species, with broader, usually 
cordate leaves, deeply and closely toothed and fimbriated, and 
_ the petiole is generally winged, and the sepals of the imperfect 
flowers are acutely toothed. ee 
Descr. Stem apparently subscandent (as in young individuals 
of various species), pubescent, as are the leaves on both surfaces 
and inflorescence. Leaves shortly petioled, ovate, acute, coarsely 
serrato-dentate, ciliated ; petiole not winged. Corymd spreading, 
rather loose ; pedicels red. Imperfect flowers with three to five 
MARCH lst, 1858, 
