1902] BRIEFER ARTICLES 159 
to the bracts, soon make so great a backward (chalazal) growth as to 
greatly overshadow the bracts. With the enlargement of the ovular 
tissue there has been a decreased development of the bract. As the 
ovular tissue has enlarged it has assumed more and more the photo- 
synthetic and nutritive functions elsewhere discharged by the bract 
(carpel), until now the latter is practically fuctionless. 
Concisely stated this view may be formulated as follows: The 
iicrosporangial and megasporangial cones are strictly homologous, 
and in the latter the sporophyll enlarges or remains small just as the 
chalazal development of the megasporangium into a scale is less or 
more pronounced. 
In accordance with this view the tribes of the family Pinaceae 
should be rearranged so as to place the Abietineae at the summit of 
oa sroup. Probably the sequence would be se like the fol- 
Wing : 
Tribe I. CUPRESSINEAE.— With Callitris, Thuya, and Cupressus inate 
e ing to  Taxodieae, a leading off in a side line 
AE.—Leading through Panos, See and 
bie Araucarieae and Abietineae. 
ARAUCARIEAE.— With Agathis lower than Araucaria. 5 oo 
- ABIETINEAE.—With Picea, Tsuga, Abies, etc., lower, and 
x 3 and Pinus higher.— CHARLES E. Saree The a i : 
ax OF PLATE Vill. 
are from Strasburger’s Die Coniferen und Gnetaceen, 
ssa Life history of Sequoia s sempervirens (BOT. ‘GAZ. a1 i 
‘rom Coulter and Chamberlain’s Morphology of Spermatophy 
- In = the figures mg is the megasyene = ot 
5, seed ; sf, sporophyll, - 
Frog i, 2, 25, 7s 
2. Cupressus funebris; 1, longitudinal section of a young ae 
etme: ?, longitudinal section of a — — cone, = : , 
Stk section of a young : 
— ovuliferous scale. 
s 'o,; 6, longitudinal section of a young ‘ 
Degsaporangium 7, longitudnal section of an older 
wn nous yard as an ovuliferous wns 
