1921.) The Eighth Indian Science Congress. clxxix 
On a ar — in the sporophyll of Tmesipterts.— 
By B.8 
The oes structure in question was noticed in the New Caledo- 
nian form, I'm. Vieillardi, Dangeard. It is well known that while the 
; ‘ t 
three-lobed sporophyll, the three- lobed sporo te arising as a ventral 
(adaxial) branch of the two-lobed on he entire structure may be des- 
ph of a do ven 
dual. In the case of the three-lobed sporophyll the lobes occupy + 
depressions between the three loculi. All the six loculi are Rietile Mid 
apparently healthy 
The vascular Yup y to the entire er rage originates as - single 
large strand constricted off tangentially ff seca of the strands forming 
the xylem-ring of the stem. This s Mae soon divides teagentiatty into 
sd aa bundles, one supplying ok individual of the twin sporo- 
phyli 
Female prothallus of Pinus longifolia. — By M. L, SETHI. 
The female prothallus in this species is a cylindrical body abou 
n length, slightly pepen phere from two sides, the shorter ae 
i d 2 
a ye. T 
open towards the apex of the prothallus. The a is aeaaestly 
lobed in a Tries region and may be invaginated als 
Notes on abnormal female prothalli of Pinus longifolia.— 
: M. i 
No. 1.—This apes was collected at Lahore on the 10th May, 
1920. it was very much compressed from side to side, the archegonia 
being aggre ated towards one flat side. The internal structure of these 
arehe _ was investigated in serial transverse se 
eleven archegonia were coun d in the prothallus, ¢ the Nenad 
e in other 
). ounted in @ 
single section. All these archegonia a opened towards the side on which 
they were situated and not towards the apex as is generally the _ 
All the eleven Grokngon nia jie "fortile. Four of them we 
stages of fertilization, while in a fifth case two nuclei (presumably eats) 
were seen below the neck. “All the rest showed the big — nucleus 
ere no’ 
bulge having nettle a neck nora 
bo 
being much smaller than the main archegonium, it does not extend 
throughout the length of the archegonium to which it 1s attached. 
o. 2.—I also came across some sag abnorma: rthalli. 
ate “ke the one described by arite (Anna 
Botany, July 1912). In_ this a dae there were three archegonia 
disposed laterally, Their necks opened towards the side and not towards 
