MALVACEÆ. 70 
with five deep divisions, valvate or reduplicate in the bud. The 
petals are the same in number and alternate. They are composed of 
a slender claw surmounted by an elongated and valvate induplicate 
limb. Between these two parts is found a more or less cucullate 
dilatation with a biauriculate base, the concavity turned inwards and 
hiding a fertile stamen, while the edges of the hood adhere to a 
glandular surface which takes the place of an extrorse cell on each 
side of the sterile stamens. The androceum is formed of ten 
monadelphous pieces of which five are sterile, thick, tapering or 
truncated at the summit, glandular without towards the edges. They 
correspond to the divisions of the calyx ; 
while the five fertile stamens superposed to the 
petals, are formed of a small filament detached 
below outside the common circumference of the 
androceum, and of an anther, articulate at the 
base with two lateral or extrorse cells, separated 
by a connective generally pretty large, and 
each dehiscing by a longitudinal cleft.' The 
Buettneria grandifolia. 

. ° 5 Fra. 121. 
gynæceum is free, superior, and formed of a Fruit. 
sessile ovary with five oppositipetalous cells, 
surmounted by a style, whose stigmatiferous apex is divided into five 
branches, or five lobes, sometimes very short. In the internal 
angle of each cell is found a placenta, supporting two collateral or 
almost superposed, descending, incompletely anatropous ovules with 
the micropyle turned upwards and outwards. The fruit is a 
spherical capsule or nearly so, covered with prickles (fig. 121), whose 
cells detached from the axis afterwards open longitudinally by their 
interior edge. The seeds, which are often solitary in each cell, en- 
close under their thick coats a very voluminous embryo with conical 
inferior radicle surmounted by a cylindrical tigella, occupying 
the axis of the seed. Round this tigella the cotyledons are hori- 
zontally rolled, being reflexed upon it, surbased, formed of two very 
long lateral lobes which are triangular, similar to wings and become 
spirally convoluted upon each other. There are some fifty Buet/nerias 

1 M. H. Mout (in Ann. Se. Nat., sév. 2, iii. ? AUBL., Guian., t. 96.—Cav., Diss., v. 290, 
324) described the pollen grain as “a triangular +. 148-150.—Jaca., Hort. Schenbr., t, 46.— 
prism, upon each lateral surface of which is an  H. B. K., Nov. Gen. ef Spec., v. 314, t. 481 a, 
oval papilla placed longitudinally; in water, 481 b—A. 8. H., Fl. Bras. Mer., i. 138, t. 
spherical with three papillæ (B. heterophylla).” 27-29.—Pout., Pl. Bras., ii. t. 145-154.— 
