348 umbeli.iperjE. 



Throughout California in the hill country. Apr. " Yerba del 

 Vibora" of the Spanish-Californians. 



2. D. Carota L. Cakeot. Biennial; root fleshy, conical; stems 

 erect, branching, 2 or 3 ft. high, commonly smooth; leaves many 

 times dissected into small linear or lanceolate segments; segments of 

 the involucre linear-lanceolate or subulate; rays very numerous, X to 



2 in. long; umbels in fruit 2 to 4 in. broad, concave and like a bird's 

 nest; fruit 2 lines long. 



Escaped from gardens and naturalized in valley lands: Alameda; 

 Santa Clara Co.; Skyland, Santa Cruz Co., ace. to Davy. July- 

 Sept. 



8. CAUCALIS L. 



Rough hispidulous annuals with decompound leaves dissected into 

 small segments. Plowers white, in simple or nearly simple umbels. 

 Calyx-teeth prominent. Fruit flattened laterally. Primary ribs 5, 

 filiform, bristly; secondary ribs 4, prominent, winged, bearing barbed 

 or hooked prickles. Oil-tubes solitary in the intervals, i. e., under 

 the secondary ribs, 2 on the commissural side. (Kaukalis, the Greek 

 name.) 



Umbels small and condensed, scattered along the stems opposite the leaves, 



on peduncles 1 or 2 lines long 1. C. nodosa. 



Umbels terminal or at the upper nodes, on peduncles 1 or 2'in. long 



2. C. microcarpa. 



1. C. nodosa Hudson. Knotted Hedge Paksley. Erect, the 

 stems with few branches, retrorsely scabrous; leaves pinnate (lower 

 5 in. long including petiole, the upper successively shorter); leaflets 

 bipinnately dissected; umbels scattered along the stems opposite the 

 leaves, on very short peduncles (1 or 2 lines long), simple or with a 

 supplementary short proliferous umbel; flowers white; fruits IJ to 2 

 lines long, those on the outside of the umbel with the exterior carpel 

 densely covered with hooked bristles, the inner carpels as well as the 

 inner fruits smooth or at least only with tubercles. 



Introduced from Europe; common in shady places: Vacaville; 

 Calistoga; Lake Lagunitas, Marin Co.; South San Francisco; 

 southern Monterey Co.; Mokelumne Hill; Folsom. 



2. C. microcarpa H. & A. Erect, slender, 6 to 9 in. high; 

 leaves 2 or 3 times ternate and much dissected, slightly hispid; 

 peduncles solitary at the ends of the branches or in clusters of 2 or 



3 at the upper nodes, 1 to 2 in. long, bearing unequally rayed umbels; 

 rays 3 to 6, 8 lines long or less; involucre of foliaceous dissected 

 bracts; involueels of entire or somewhat divided bractlets; fruit 

 oblong, 2 lines long, armed with rows of hooked prickles. 



Coast Ranges and Sierra Nevada, widely distributed but not 

 common: Monterey Co.; New Idria; Alcalde, Fresno Co.; Kaweah; 

 Mokelumne Hill; Vaca Mountains; Bodega Pt.; Sites; Butte Co. 

 Apr.-May. 



9. APIASTRUM Nutt. 

 Small branching glabrous annual with dissected leaves. Flowers 



