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XI. On the Ambrosinia ciliata of Roxburgh. By the late WILLIAM GRIFFITH, 
Esq., F.L.S. &c. &c. Communicated by R. H. Sorry, Esq., F.R.S., L.S. 
&c. &c. 
Read November 4th, 1845. 
MY attention was first directed to this extraordinary plant by Dr. Wallich 
in the early part of last June (1835). I must however observe, that Dr. Wallich 
was previously acquainted with many parts of its structure, and his artists 
were at the above time engaged in making a drawing of the plant, in which 
many of the points about to be described were represented. 
A slight examination was sufficient to convince me that this plant, although 
referred to Ambrosinia by Roxburgh, did not at all agree with the characters 
laid down as distinctive of the original genus of that name. Dr. Wallich, to 
whom I had mentioned my belief that it constituted a new genus, very kindly 
suggested the name of Myrioblastus, which name I had adopted in my original 
manuscript. I have since however ascertained that Ambrosinia spiralis and 
ciliata of Roxburgh have been separated from that genus by Fischer, and 
together constitute his genus Cryptocoryne. To this Schott in the * Melete- 
mata Botanica’ adds Caladium_ovatum of Ventenat. Although the above 
separation appears judicious, yet, as very little additional light is thrown 
upon the plant in question, I have only to regret the inability to adopt a 
very classical and appropriate name. 
Ord. Nat. ARoIDEXx. 
Class. Linn. Monac1a Monanpria. 
Cryprocoryne, Fischer in Schott et Endlicher Meletemata Botanica, fasc. 1. 
p. 6 (charactere incompleto). 
Cuar. Gen. Spatha tubo brevi ad apicem diaphragmate (septo) obliquo semipartito, limbo 
elongato. Spadix basin versus ovariis cincta, medio filiformis nuda, suprà antherifera. 
2 
apice conico nudo calloso septo pilei instar tecto. Anthere biloculares, transverse de- 
