* PRAE NA 
MR. T. H. CORRY ON ASCLEPIAS CORNUTI. 205 
* alar chamber’ for the stigmatic cavity appears to me superfluous, but is of little importance. Two of 
the most interesting points in connexion with the fertilization of Asclepiads are, lst, the great rapidity 
with which the pollinia are sometimes extracted by flies (and before I understood the real manner of 
their extraction I was much puzzled to see a fly suddenly withdraw the pollinia, whilst watching it under 
a lens, and yet not see how it did so) ; 2ndly, the great ease with which the pollen-masses slip into the 
stigmatic cavity, especially when applied by insects, their disappearance into the cavity being quite 
sudden." A few brief footnotes furnished by Mr. Brown will also be found in the text of the paper. 
The Council having approved of the course I recommended, I have simply contented myself with giving, 
in Mr. Corry's own language, all that relates to the development of the corpusculum and the mode of 
fertilization. Mr. Corry's style is often difficult, and sometimes obscure; but this I have not attempted 
to mend. I have, however, taken the liberty of throughout substituting Haworth's accepted term “ style- 
table? for *stigma-disk," which is in contradiction to Mr. Corry's own views; І have also replaced 
“anther-loculus” by *'anther-cell,?" as more familiar to all English descriptive botanists.—W. Т, 
Тнівкілох Пүен.| 
DESCRIPTION OF THE PLATES. 
Lettering applicable to figs. 1-12 :— 
a. upper end of free part of style. c.f. corpuscular furrow. р. petal. 
a.l. anther-alæ. сотр.ар. corpuscular appendages. par. parenchyma of anther. 
an. anthers, el, space between adjacent an- pl. placenta. 
a.s. lateral processes of anthers ther-filaments. pol. pollinium. 
giving rise to gynandrous f.v.b. fibro-vascular bundle ofstyle. r. radial groove. 
union, gr. lateral grooves continuous at тесер. receptacle. 
af. alar fissure. a lower level with space el. в. sepal. 
an. lo. anther-cell. h. horn springing from nectary. s.t. style-table, 
c. cucullus, or nectary. k. notch in anther-ala. stig. receptive or stigmatie tissue. 
carp. carpel. lap. lamina at apex of connective. sty. free portion of style. 
col. staminal column. m.m. fleshy teeth. tap. tapetum, 
con. connective. ov. ovules. v. fibro-vascular bundle of stamen. 
con.tis. conducting tissue. ova, ovary. г. “ canal of style.” 
corp. corpusculum. 
PLATS ХАТУ. 
Fig. 1. A fully expanded flower, with reflexed calyx and corolla, and exserted staminal column and 
corona. 
Fig. 2. One of the nectaries of the staminal corona, seen from the side. 
Fig. 3. The same: front view of the internal side. 
Fig. 4. The same in longitudinal section, in order to show the origin of the horn-shaped process, л, from 
its base. 
Fig. 5. Exserted portion of an expanded flower, showing the staminal column and the parts which it 
bears. c. Nectary, of which a portion has been cut away. an., an. Two anthers and portions 
of two more shown. corp. Two stigmatic corpuscles, one facing. a.f., af. Alar fissures; a.l. 
the boundaries of these; k. the notch near the lower extremity. 
Fig. 6. Staminal column, seen from above. 
Fig. 7. A stamen with its nectary cut, viewed dorsally. 
Fig. 8. Adult expanded flower bisected longitudinally ; the sepals, s, and petals, p, have been partially 
removed by section. The plane of section passes on the left side between two anther-alz down 
SECOND SERIES.—BOTANY, VOL. II. 91 
