MO Mr. Griffith on the Root-Parasites referred to Rhizantheae, 



not limited to one particular group of Monocotyledons, but is presented to 

 us at the three different points of Sm/lacinece and Dioscorece ; Taccece ; and 

 Aroidece. 



The occurrence among- Dicotyledons of the characteristic number of Mono- 

 cotyledons is much more diffused, for it is found in Anonacece, Berberidece 

 Menispennece, &c. ; in Aurantiacece, Olacinece, Limnanthece, Meliacece, Ebena- 

 cece, Asarinece, Loranthacece, &c. 



It may also be urged, and especially with reference to the situation of Rhi- 

 zanthece as a single group, that there is not, perhaps, a variation in form or 

 in structure of primary importance in Dicotyledons that may not be met with 

 in Monocotyledons and Acotyledons, and vice versa. Thus the conical trunk of 

 Dicotyledons is imitated by Bambusa, and in a very marked degree by some 

 Dracamas*. The cylindrical trunk of Monocotyledons is imitated by Cycadece, 

 by Tree-Ferns, and these again are sometimes beautifully imitated by the 

 stem of Carica Papaya. The frondose form of growth of Hepaticce appears 

 in Podostemon. The dichotomy of Fuel is of common occurrence among 

 Xaiades, and Fungi are curiously imitated by some of the plants grouped 

 among Rhizanths. And this interchange is in some form or other so gene- 

 ral, that it may perhaps be said, that the existence of a peculiar structure 

 in one subkingdom predicates its existence or its representation in the two 

 others. 



It therefore appears to me consistent with the order of nature, that the 

 analogue of the reproductive organ of Acotyledonons plants (at least of those 

 winch appear to have sexes) will, whenever it be foundf, he found both among 



* J *» «"« struck with the resemblance certain Dractn* have to Dicotyledonous trees in the forest 

 of Pub Btssar near Malacca, in which there is a large arborescent species not to be distinguished from 

 an oriu.arvD.cotyledonous tree, except by inspection of the leaves. On arriving here, in the progress 

 of cleanng, ft., so as to form a botanical garden. I examined casually several shrubby species ofthe 



brlCcr 2 7 SUrPr ;f '° ** ** ^ reSemUanCe V °> " 0t ~*»* ".her to the mode of 



" u „7b I t l ."I "",. " * COiDCide With M " GraDt ' who ^ «* «P -vera, specimens in 



t « add H f t 1 aPPareDtly - ^ "^ Pr ° ba ^ * ani ^ «• "- formations of woody 



L to t^ 2 7"v r "* %Ure ° f the remalkaMe E -S— «» » Lily's "^ 



forL of erbrto 7 r7t Dt to eDto ° n tbe qUeS,i ° n Whethef «>»- homogeneous acotyledonons 

 herlebfnlnt and f tb T"* "l—**". - •* spores of Acetones. iL study of 



.her development and of then- gernunation is an essential requisite in the settlement of this point 



