xviii ANALYSIS OF 
Ovata, differ materially from the leaves of the Orchis Genus, 
Hoots of Ophrys Apifera referable thofe of Orchis. Roots of 
Ophrys Ovata fibrous. Suppofed error in the charader of th^ 
feed-yeffels of Orchis, Satyrium, Ophrys, and Serapias. 
LECTURE III. 
'Genera of the Cfojfes One-houfe and Tivo-houfes. Of Ferns, 
Page 15J, Arum, a plant of extraordinary flru&ure. 
Nature not limited in her modes of reproduction. 158, Sin- 
gular fituation of the ftamens of Arum, refpecting the Piftil. 
Stamens a collection of Anthers only. Nectaries of Arum? 
Seeds of Arum. Opinion of the younger Linneus of the claffia 
character of Arum. I69, Roots of common Arum extremely 
acrid 3 eaten by tb nifties ; the roots of fome fpecies made ufe 
of as food 5 the leaves of fome fpecies boiled and eaten. 
Starch made from the roots of Arum Maculatum 5 injurious 
to the hands which ufe it. All parts of the plant acrid. The 
leaves and whole ftructure of Hydrocharis exceedingly curious. 
100, Singularities of the ftamens explained. Nectaries obferved, 
by Mr. Curtis, on the piftil, not noticed by Linneus. Spathes 
of the flowers of Hydrocharis appear full of bubbles. Mr. Cui% 
iis's account of Hydrocharis differs from that of Linneus. 
Flowers of Typha, or Cat's- tail, difficult of invefliga- 
tion. Mr. Curtis does not wholly agree, in his account of 
them, with Linneus. Mr. Curtis's account to be relied on. 
Flowers of Typha defcribed. Suppofed calyx, of Linneus, 
hairs which cover the receptacle after the ftamens are fallen 
off. Spikes of flowers Aments, or Catkins. Cylindric form 
of the fpikes marks the Genus Typha. Cu/m } the Linneap 
£erm for the ftraw of Gralfes. 162, Difference of pofition of 
the male and female flowers on the Culm, Magnificent ap- 
pearance 
