SEED-STRUCTURE OF RAFFLESIACEZ AND HYDNORACER., 309 
viranus,* and myself were ig ar fruitless, so far as a correct solu- 
tion of the facts was concerned, eddell | produces something 
approaching a truthful reprodbncielayt of across section of the seed 
of Rafflesia Arnoldi, the only essential inexactness being in the endo- 
sperm. This figure indeed is only a proof of the precision of Brown’s 
examination, for in the _explanation of the plate it is stated to be 
t dr 
mary horizontal —. Siustsectel from R. Brown’s representa- 
rg of a longitudinal se 
Coming to prea of the Apodanthee, we possess, if we dis- 
rand af a figure of fe outward shape of a seed of Pilostyles Thurberi, 
A. Gray, as given by Torrey, ¢ nothing beyond the data furnished by 
Karsten n§ on the structure of his Sarna Inge. According to his 
representation, this plant has a homogeneous exalbuminous embryo, 
consisting of rather small-celled Tae and enclosed in a woody 
testa cosas of ito layers o 
sa 
Sarna); Oytinus Hypocistis, L.; Hydnora tee Thbg. (in the 
investigation of the ovules tho ‘of H. Johannis, Becc., were also 
partiall 
s 
used) ; and Prosopanche Burmeistert, De f ar 
aflesia Arnoldi has, as w throug Brown, an immense 
fleshy fruit, filled with numerous s fro 
hich these seeds develop are likewise described in detail by the 
€ author, found exactly the same structure e ovules 0 
Brugmansia Zippelit ; a but those of Rafflesia, in a suitable stage of 
development, were not within my reach. I have since been able to 
determine the eoustaie of the ovules of Rafflesia Patma, whic 
deviates in no respect from the above-named species. A long, slender 
funicle bears the atropous nucleus, which is provided with a 
thick integument. Already at the time when this integument first 
orming a more or less obtuse angle with the funicle (compare fig. 2 
and 3). In many instances this unilateral apie is so decided that 
Gy His Ueber das Embryo von Orobanche Lathrea und Cytinus, Bot. 
3 700. 
; Weld in Aainiaten Se. Nat., série 3, xiv., 171. fs 
» United States and Maxicks Bounder y Survey, under 
of Lieut Col. W. A. Emory, vol. ii., 1859, Botany, p. 207, tab. lvii., fig. 1—5, 
8 PR Ueber die Stellung einiger Familien  . Pflanzen im 
. N. Acta Leop. Carol., tom. 26 pars ii., tab. 5, fig. 7. 
