17 
SYSTEMATIC SYNOPSIS OF GENERA. 
A. Frjiit with secondary ribs the most prominent or the 
only ones : oil-tubes solitary beneath the secondary ribs or want- 
ing : stylopodium conical [except in Daucus'). 
I. Fruit with bristly prickles, winged secondary ribs, filiform pri- 
mary ribs, and small groups of strengthening cells. 
1. Daucus. Calx-teeth obsolete. Fruit oblong, flattened 
dorsally. Carpel with 5 slender bristly primary ribs, and 4 
winged secondary ones each bearing a single rovv of prominent 
barbed prickles. Stylopodium depressed or wanting. Oil-tubes 
solitary in the intervals (that 'is, under the secondary ribs), 2 on the 
commissural side. Seed flattened dorsally; the face somewhat 
concave or almost plane. 
2. Caucalis. Calyx-teeth prominent.. Fruit ovate or ob- 
long, flattened laterally. Carpel with 5 filiform bristly primary 
ribs (each with a prominent group of strengthening cells), and 4 
prominent winged secondary ones (without strengthening’ cells) 
with barbed or hooked prickles. Stylopodium thick conical. Gil- 
tubes solitary in the intervals (that is, under the secondary ribs), 
2 on the commissural side. Seed-face deeply sulcate. 
II. Fruit smooth, with filiform secondary ribs, no primary ribs, and 
a broad conspicuous band of strengthening cells about the seed-cavity 
(making a crustaceous pericarp). ' • 
3. Trepocarpus. Calyx-teeth prominent, unequal. Fruit 
linear-oblong, flattened laterally. Carpel somewhat dorsally flat- 
tened, with the 4 corky secondary ribs prominent and thick peri- 
carp. Stylopodium conical, with very short style. Oil-tubes soli- 
tary beneath the secondary ribs, more or less imbedded in the seed 
and adhering to it, 2 on the commissural side. Seed-face plane or 
somewhat concave. 
4. Bifora. Calyx-teeth'evident. Fruit broader than long, 
flattened laterally, the globose carpels in contact only by a narrow 
commissure. Carpel with 4 filiform secondary ribs and thin very 
hard pericarp. Stylopodium conical, with styles recurved over 
the carpels. Oil-tubes none. Seed-face deeply concave. 
5. Coriandrum. Calyx-teeth prominent. Fruit globose, 
with broad commissure. Carpel with inconspicuous secondary 
< 
