Carrot Family 281 



blades or segments laciniate-toothed or cleft, tapering into a long 

 more or less spinosely toothed petiole; inflorescence beginning 

 near the base, diffusely branching ; the heads on very short ped- 

 uncles, nearly globose, about 6 mm. long; bracts very narrow, 

 rigid, 12-18 mm. long, with a few spinose bristles at the base, not 

 at all scarious-margined ; bractlets about the size of the bracts, 

 short, scarious-margined below, broadening upward to a short 

 lobe on each side, the margined base inclosing the fruit and fall- 

 ing with it; sepals ovate, scarious-margined, 1.5 mm. long, 

 tapering to a cuspidate bristly tip ; styles longer than the sepals. 

 In low heavy ground toward the coast. First collected by Parish near 

 Oceanside. 



5. WASHINGTONIA Raf. 



Glabrous or hirsute perennials from thick aromatic 

 roots, with ternately decompound leaves and white or 

 purple flowers in few-fruited umbels. Calyx-teeth obso- 

 lete. Fruit linear to linear-oblong, more or less attenu- 

 ate at base, acute or beaked at apex, glabrous or bristly 

 on the ribs. Carpels slightly or not at all flattened 

 dorsally. Stylopodium conic, sometimes depressed. Oil- 

 tubes obsolete in mature fruit, often numerous in young 

 fruit. Seed-face from slightly concave to deeply sulcate. 



1. W. brachypoda (Torr.) Heller. Stems rather stout, 3-9 

 dm. high, pubescent or sometimes glabrous; leaves ternately 

 compound; leaflets 2-3 cm. long, acute, laciniately lobed or 

 toothed; umbel 1-6-rayed; involucre and involucels of linear 

 bracts, the latter equaling or exceeding the flowers; rays, 3.5-10 

 cm. long; pedicels 1-2 mm. long; fruit 12-16 mm. long, 4 mm. 

 wide, short-attenuate at base, rough-bristly on the very prom- 

 inent ribs; stylopodium and style 3 mm. long; the former broad 

 and somewhat depressed ; seed-face very concave, nearly inclosing 

 a central cavity. (Osmorhiza brachypoda Torr.) 



Occasional in all our mountains on shady slopes. 



6. CAUCALIS L. 



Mostly hispid annuals with pinnately dissected leaves 

 and white flowers. Calyx-teeth prominent, Fruit ovate 

 or oblong, flattened laterally. Carpel with 5 filiform 



