Genus 48. 



CARROT FAMILY. 



657 



I. Ptilimnium capillaceum (j\Iichx.) Raf. Mock Bishop-weed. Fig. 3173. 



Ammi majus Walt. Fl. Car. 113. 1788. Not L. 

 A, capillaceum Michx. Fl. Bor. Am. i : 164. 1803. 

 D. capillacea DC. Mem. Omb. 38. 1829. 

 Ptilitniiiuin capillaceum Raf.; Seringe, Bull. Bot. 



217. 1830. 

 P. missouriense Coult. & Rose, Contr. Nat. Herb. 



12 : 444. 1909. 



Slender, l-2 high or more, the branches 



ascending or sometimes divaricate. Leaves 



finely dissected into filiform segments, the 



upper sessile, the lower more or less petioled ; 



involucral bracts, or some of them, pinnately 



parted ; involucels of several linear bracts ; 



umbels 2-4' broad, 5-20- rayed, the rays i'-2' 



long; pedicels 2"-8" long; fruit ovate, acute, 



i"-i2" long. 



In wet soil, especially brackish meadows, along 

 the coast, Massachusetts to Florida, west to Texas, 

 north to Kansas and Missouri. June-Oct. Called 

 also herb-william, wood-nep, bole- or bull-wort. 



2. Ptilimnium Nuttallii (DC.) Britton. Xuttall's ^lock Bishop-weed. Fig. 3174. 



Pcuccdannm vcrticillatuin Raf. Fl. Ludov. 81. 1817? 



Discopleura Nuttallii DC. Mem. Omb. 38. 1829. 



Discopleura capillacea var. Nuttallii Coult. & Rose, 

 Bot. Gaz. 12: 292. 1887. 



Ptilimnium Nuttallii Britton. Mem. Torr. Club 5 : 244. 

 1894. 



Similar to the preceding species, but generally 

 stouter, 2-3 high, the branches nearly erect. 

 Umbels 7-2S-rayed ; bracts of the involucre linear, 

 entire, short, those of the involucels minute; fruit 

 nearly orbicular, obtusish, about I" long. 



In swamps, IMinois to Kansas, Louisiana and Texas. 

 May-Sept. 



49. CICUTA L. Sp. Pi. 255. 1753. 



Erect tall perennial glabrous herbs, with pinnate or pinnately compound leaves, and 

 compound terminal umbels of white flowers. Involucre of few bracts, or none ; involucels 

 many-bracted. Caly.x-teeth acute. Petals broad, the ape.x inflexed. Stylopodium short- 

 conic ; fruit ovoid, or oblong, glabrous, slightly flattened laterally. Ribs corky, the lateral 

 ones rather the strongest; oil-tubes solitary in the intervals, 2 on the commissural side. Seed 

 nearly terete. [The ancient Latin name.] 



About 8 species, natives of the north temperate zone and Mexico. Besides the following about 

 4 others occur in western North America. Type species : Cicula virosa L. 



Leaf-segments lanceolate. 

 Leaf-segments narrowly linear. 



1. C. maculata. 



2. C. bulbifera. 



42 



