292 FLORA OF TEXAS. 



59. PARSLEY FAMILY. Order, Umbellifer^. 



Herhsy with chiefly hollow and furrowed stems, alternate 

 mostly compound leaves, with dilated or clasping petioles, 

 and \\mhQ\\Q(\ flowers ; calyx-tuhe coherent with the ovary, 

 the limb 5-lobed or obsolete; petals 5, mostly incurved, 

 inserted with the 5 stamens on the edge of the disk that 

 crowns the ovary; styles 2. Fi'uit composed of 2 indehis- 

 cent carpels {mericarps), suspended from a filiform axis 

 {car2)op)liore), and cohering by their inner face {commis- 

 sure), each furnished with 5 primary ribs, and often with 

 as many secondary ones, the intervening spaces (intervals) 

 usually containing channels (vittce), which are filled with 

 aromatic oil. Seed solitary, suspended ; emhryo minute, at 

 the base of horny albumen; umbels and partial umbels 

 (iimlellets) commonly subtended by an involucre or in- 

 Tolucel. 



SYNOPSIS. 



§ 1. Inner face of the seed flat, or nearly so. 



* Umbels simple, or one growing from the summit of another ; stems creeinng. 



Fruit orbicular, flattened. Leaves rounded Htdrocottle. 



Fruit globular. Leaves linear, fleshy Cbantzia^ 



Umbels capitate ; foicer sessile. 



Fruit bristly, globular. Flowers polygamous. Involucel none Sanicula. 



Fruit scaly, turbinate. Flowers perfect, bracted. Heads involuceled. .Ertngium. 



*** Umbels compound; flowers pediceled. 



t Fruit with bristly ribs, the bristles in a single row. 



Fruit 9-ribbed. Leaves finely 2-3-piimate Daucus. 



tt FruU smooth or slightly roughened, 

 t Fruit wingless, laterally compressed, or twin. 



Flowers white. Fruit subglobose. Calyx-limb 5-toothed Cicuta. 



Flowers white. Fruit oblong. Calyx-limb obsolete. Divisions of the leaves 



lanceolate Cutptot.exia. 



Flowers white. Fruit ovate, rough. Calyx-limb obsolete. Divisions of the leaves 



filiform Leptocaulis. 



