292 Cornaceae 



entire or toothed bractlets, and usually white flowers in 

 concave umbels which become connivent in fruit. 

 Calyx-teeth obsolete. Fruit oblong, flattened dorsally. 

 Carpel with 5 slender bristles, primary ribs and 4-winged 

 secondary ones, each bearing a single row of prominent 

 barbed prickles. Stylopodium depressed or wanting. 

 Oil-tubes solitary in the intervals, under the secondary 

 ribs, 2 on the commissural side. Seed flattened dorsally,, 

 the face somewhat concave or almost plane. 



1. D. pusillus Michx. Stems mostly simple, papillate, hispid > 

 2.5-60 cm. high; leaves finely dissected into narrowly linear seg- 

 ments ; umbels unequally few-many-rayed, forming a rather 

 compact head; rays 1-3.5 cm. long; pedicels very unequal ; fruit 

 3-5 mm. long. 



Frequent in open dry ground in the chaparral belt and on the planes 

 throughout our range. 



2. D. Carota L. (WILD CARROT.) Hispid, usually biennial, 

 erect, 3-9 dm. high, the root fleshy, deep conic; lower and basal 

 leaves 2-3-pinnate ; leaflets linear or lanceolate, dentate, lobed or 

 pinnatifid; upper leaves smaller, less divided; bracts parted into 

 linear or filiform lobes; umbels 5-10 cm. broad; rays numerous, 

 crowded, 1-5 cm. long; the outer ones longer than the inner ^ 

 pedicels very slender, 2-4 mm. long in fruit; flowers usually 

 white, the central one of each umbel often purple; fruit 3-4 mm. 

 long, bristly on the winged ribs. 



Occasional in waste places. 



Family 68. CORNACEAE. DOGWOOD FAMILY. 



Trees or shrubs or rarely herbs, with simple and entire 

 opposite or rarely whorled leaves, and flowers in cymes 

 or spikes, perfect or dioecious. Calyx-tube adnate to 

 the ovary, its limb 4-5-dentate or 4-5-lobed or none. 

 Petals generally 4 or 5, sometimes wanting, usually valv- 

 ate spreading, inserted at the base of the epigynous 

 disk. Stamens as many as the petals or more numerous, 

 inserted with them ; filaments subulate or flat. Ovary 



