UMBELLIFER^. 



Obdeb XLm. UMBELLIF'ER^. (Pabsley Pajuly.) 



Herts with small flowers mostly in compound umhds. 

 Calyx-tube grown fast to the surface of the ovary ; calyx- 

 teeth minute or none. The 5 petals and 5 stamens inserted 

 on a disk which crowns the ovary. Styles 2. Fruit dry, 

 2-seeded. Stems hollow. Leaves usually much cut. (See 

 Part I., Chapter VII., for description of a typical flower.) 



Synopsis of the Genera. 



§ 1. Seeds fiat (not'hollow) on tlie inner face, 



1. Hydrocot'yle. Umbels simple^ or one springing from the summit of 



another, axillary. Flowers white. Stem slender and creeping. 

 Leaves round-kidney-shaped. 



2. Sanic'nla. Umbels irregular (or compound), the greenish fiowers 



capitate in the umhellets. Leaves palmately lohed or parted. 

 Fruit globular, covered with hooked prickles. 

 {In the Genera which follow, the umbels are regularly compound.) 



3. Dan'cns. Stem bristly. Leaves twice or thrice-pinnate, or pinna- 



tilid. Bracts of the involucre plnnatifid, very long. Fruit ribbed, 

 the ribs bristly. 



4. Heracle'uiu. Stem S-d feet high, woolly and. g;roovQdi, Leaves 1-2- 



ternately compound. Flowers white, the outer corollas larger 

 than the others. Fi^uit wing-margined at the junction cf ths car- 

 pels, very flat. Carpels 5-ribbed on the back. 



5. Fastiua'ca. Stem smooth, grooved Leaves pinnate. Flowers 



yellow, all alike. Fruit as in No. 4. 

 6 Peuced'anuni. Low acaulescent herbs, with spindle-shaped roots 

 and twice-pinnate leaves. No involuci*e ; involucels of scarious- 

 margined (often purplish) lanceolate bractlets. Flowers white or 

 yellow. Fruit round, winged on the sides. — N. M". only. 



7. Arcbein'ora. Stem smooth. Leaves pinnate, of 3-9 rather narrow 



leaflets. Flowers white. Fruit broadly winged, flat, 5-ribbed on 

 the back. 



8. Arcbangel'lca. Stem smooth, stout, purple. Leaves 2-3-ternately 



compound. Flowers greenish-white. Fruit smooth, flattish on 

 the back, double-wing-margined, each carpel with 3 ribs on the 

 back. 



9. ConioseH'num. Stem smooth. Leaves 2-3-pinnately compound, the 



petioles inflated. Flowers white. Fruit doubly vjing-marginsd, 

 and with 3 tiarrow wings on the back of each carpel. 



