ON MONOCOTYLEDONOUS PLANTS FROM MADAGASCAR. 329 
mens of his Ledgeriana bark as well as of officinalis grown by 
himself. Mr. Holmes, the Curator of the Museum, agreed with 
me in finding these so closely to resemble each other as to lead 
to the supposition of hybridism with C. officinalis. At all events, 
although the bark may be excellent, it would not pass current in 
commerce as Zedgeriana, nor does it resemble that sent me by 
Van Gorkom as such. Mr Christie, taking his trees as the stan- 
dard, naturally observes that my figured Ledgeriana is * far from 
being a typical Ledyeriana, if, indeed, it be one a£ all ” *, 
It is certain that the seed of form A would not always repro- 
duce the form B, but also the forms Band C. The same principle 
must also be expected and be alike operative in other species of 
Cinchona. 
Descriptions and Notes on new or rare Monocotyledonous Plants 
from MAdagascar, with one from Angola. By Henry N. 
Rivu#y, M.A., F.L.S., Assist. Botan. Depart. Brit. Nat. Hist. 
Mus. 
[Read June 7, 1883.] 
Tue greater part of the plants herein described were collected by 
the Rev. Wm. Deans Cowan in the east and centre of the island 
during the past few years. Mr. Cowan’s attention, among plants, 
was especially directed to the Orchidex, of which, besides dried 
and spirit-specimens, he has brought home a good collection of 
coloured drawings, of no small value in a group of plants so dif- 
ficult to preserve as Orchidez. In addition to these plants, I 
have added notes or descriptions of interesting plants from the 
collections of the late J. M. Hildebrandt, and of Hilsenberg and 
Bojer. 
All the plants, except where otherwise stated, are in the her- 
barium of the British Museum at South Kensington. 
EwmnaALUS acororpes, Rich. Nossi-bé, at 5-6 metres depth in 
the sea. Hildebrandt, no. 3209. 
* ‘Prize Essay on Cinchona Cultivation, by T. N. Christie, Colombo, 1883. 
LINN, JOURN.—BOTANY, VOL, XX. 2D 
