17 

 SYSTEMATIC SYNOPSIS OF GENERA. 



A. Fruit zcit/i scro//d(7rv r/l>s the most promiiiciit or t/ic 

 only (Dies: oil -tubes solitary bouatli the sicoinlary ribs or xc-ant- 

 i/'o.' sty lopodi lint coiiical [except in /hi/te/ts). 



I. FniiL with bristly prickles, winged secondary rilis, (ilii'orrii pri- 

 mary ribs, and shhiH groups of strengthening cells. 



1. DauCUS. C:il\-tectll obsolete. I'^niil olihuit^, llaltciicd 

 elorsully. Carpel witii 5 slciitler l)ristl\ jMimai\ rihs, and \ 

 winged .sccoiular\ ones each bearing a single row of prominent 

 barbed prickles. St\ lopcjdiinn depressed or wanting. Oil-tubes 

 solitary in the intervals (that is, under the secondary ribs),2on the 

 commissural side. Seed flattened dorsali\ ; the face somewhat 

 concase oi" almost plane. 



2. Caucalis. Calyx-teeth prominent. Fruit ovate or ob- 

 long, flattened laterally. Carpel with i) 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. Oil- 

 tubes solitar)- in tlie intervals (that is, under the secondary ribs), 

 2 on the commissural side. Seed-face deepl\- sulcate. 



II. Fruit smooth, with tiliform secondary ribs, no primary ribs, and 

 a broad conspicuous band of strengthening cells about the seed-cavity 

 (making a crustaceous p^ricaip). 



3. Trepocarpus. Calyx-teeth j:)romincnt, 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. Cal}x-teeth evident. l-'rnit broader than long, 

 flattened laterally, the globose carpels in contact only by a narrow 

 commissuie. Carpel with 4 filiform secondary ribs and thin very 

 hard pericarp. Stylopodium conical, with styles recurved over 

 the carpels. Oil-tubes none. vSeed-face deeply concave. 



y. Coriandrum. Calyx-teeth [jrominenl. Fruit globose, 

 with broad commissure. Carpel with inconspicuous secondary 



