Tas. 6801, 
CLEMATIS tusutosa, var. Hookeri. 
Native of Northern China. 
Nat. Ord. RanuncuLacex.—Tribe CLEMATIDER. 
Genus Ciematis, Linn, ; (Benth. et Hook. f. Gen. Pi. vol. i. p. 3.) 
Ciematis tubulosa; herbacea v. basi lignescens, caulibus sulcatis et angulatis 
pubescentibus strictis erectis, foliis 3-foliolatis, foliolis amplis oblique ovato- 
rotundatis acutis dentatis rugosis glabriusculis, floribus axillaribus et in 
paniculas dispositis lilacinis, perianthio tubuloso basi param ampliato, sepalis 
linearibus i hapa ipathelatie acutis extus striatis sericeis, antheris linearibus 
obtusis filamento subzequilongis et paullo angustioribus. 
Var. Hookeri, herbacea, ramis incano-sericeis, floribus pollicaribus, sepalis linearibus 
apices versus revolutis. 
C. Hookeri, Dene. in Nouv. Archiv. du Mus., Ser. 2, vol. iv. p. 206, t. 11. 
The Clematises of the twbulosa group are likely to prove 
_a trouble to horticulturists anxious to keep a correctly 
named collection of these beautiful plants; and I fear that 
the efforts of my late friend M. Decaisne to divide them 
(in the work quoted above) into species will not prove to be 
altogether satisfactory. Only one form of the group has 
hitherto been figured in this work, namely, that called 
C. tubulosa, Plate 4269, and this Decaisne separates from 
C. tubulosa, as C. Hookert ; fortunately he gives an admirable 
plate of C. Hookeri, which precisely accords with the figure 
here given ; whereas the C. tubulosa of Plate 4269 as exactly 
_ (except in the obtuse anthers) accords with his C. Davidiana 
(p. 205, tab. 10), also excellently well figured by him, and 
differing from Hookeri in the much shorter pedicels, more 
crowded axillary erect flowers, and more spathulate sepals 
which are revolute from the middle, and the very acuminate 
anthers (not shown in the Boranican Macazine figure of 
tubulosa). Whether Davidiana is separable specifically 
from tubulosa is another question. M. Maximovicz, whose 
knowledge and acuteness as a systematist are of the highest 
order, regards all Decaisne’s eight species as forms of one 
polymorphous plant (‘‘ Melange Biologique,” in Bull. Acad. 
FEBBUARY Isr, 1885, 
