GENUS 30. 



CARROT FAMILY. 



645 



i. Phellopterus montanus Nutt. Mountain 

 Cymopterus. Fig. 3146. 



Cymopterus montanus T. & G. Fl. N. A. i : 624. 1840. 



Phellopterus montanus Nutt. ; Coult. & Rose, Contr. U. S. 

 Nat. Herb. 7: 167. 1900. 



Somewhat glaucous, or very slightly pubescent. 

 Leaves i'-6' high, stout-petioled, pinnate, or bipinnate, 

 the segments oblong, obtuse, entire, toothed, or lobed ; 

 peduncles stout, i'-6' high; involucre and involucels of 

 broad membranous somewhat united veined bracts ; 

 umbels i'-2' broad in fruit; rays several, 3"-Q" long; 

 pedicels i"-2" long; fruit ellipsoid, 3"-6" long, the 

 carpels broadly 3-5 winged; oil-tubes 1-3 in the 

 intervals. 



Dry soil, South Dakota to western Nebraska, Wyoming, 

 Colorado and Texas. March-April. 



31. AETHUSA L. Sp. PI. 256. 1753. 



An annual glabrous herb, with pinnately dissected somewhat shining leaves, and com- 

 pound umbels, both terminal and opposite the leaves. Involucre none, or of a single bract. 

 Bracts of the involucels 1-5, setaceous, turned to one side. Calyx-teeth obsolete. Petals 

 inflexed at the apex. Stylopodium broad, thick. Fruit globose-ovoid, glabrous. Carpels 

 dorsally compressed, the 5 ribs prominent, corky, acute, nearly equal ; oil-tubes solitary in 

 the intervals, 2 on the commissural side. Seed-face flat. [Greek, burning, from the shin- 

 ing foliage.] 



A monotypic genus of Europe and Asia. 



i. Aethusa Cynapium L. Fool's Parsley 

 or Cicely. Fig. 3147. 



Aethusa Cynapium L. Sp. PI. 256. 1753. 



Erect, leafy, dichotomously branched, rather 

 slender, i-24 high. Leaves 2-3-pinnate, the 

 lower slender-petioled, the upper nearly sessile; 

 petiole-bases dilated; ultimate segments linear, 

 acutish ; umbels long-peduncled, 2'-3' broad in 

 fruit, 8-i2-rayed; rays $'-iJ' long; pedicels i"-4" 

 long; bractlets of the involucels 2-4, linear, turned 

 downward; fruit about ii" long, somewhat longer 

 than broad ; flowers white. 



In waste places, Nova Scotia to Pennsylvania, On- 

 tario and Minnesota. Poisonous. Adventive from 

 Europe. False or dog's-parsley. Dog-poison. Small 

 or lesser hemlock. June-Sept. 



32. COELOPLEURUM Ledeb. Fl. Ross. 2: 361. 1844. 



Stout and tall maritime perennials, with large 2-3-ternate leaves, inflated petioles, and 

 compound umbels of greenish white flowers. Involucre of a few linear deciduous bracts, 

 or none. Involucels of numerous linear bracts. Calyx-teeth obsolete. Petals with an inflexed 

 apex. Stylopodium depressed. Fruit oblong to subglobose, scarcely flattened ; dorsal and 

 intermediate ribs prominent, corky-thickened, the lateral ones slightly broader, acute but not 

 winged; oil-tubes solitary in the intervals, 1-2 under each rib and 2-4 on the commissural 

 side. Seed loose in the pericarp, its face flat or slightly concave. [Greek, hollow-ribbed.] 



Four or five species of North America and Asia. Type species : Coelopleurum Gmelini (DC.) 

 Ledeb. 



