UMBELLIPERAE (PARSLEY FAMILY) 



619 



1. C. actaeifblium (Michx.) Coult. & Rose. Stem 8-12 dm. 

 high ; leaflets ovate, irregularly cut-serrate, 6-7 cm. long ; fruit 

 4-7 mm. long. (C. Gmelini of auth., not Ledeb.) Rocky coasts, 

 Mass, to Greenl. FIG. 835. 



32. CYM6PTERUS Raf. 



Calyx-teeth more or less prominent. Fruit usually globose, with 

 all the ribs conspicuously winged ; oil-tubes 1-several in the inter- 

 vals, 2-8 on the commissure. Stylopodium depressed. Seed-face 

 slightly concave. Mostly low (often cespitose) glabrous peren- 

 nials, from a thick elongated root, with more or less pinnately 

 compound leaves, with or without an involucre, prominent involu- 

 cels, and white flowers (in ours). (From /cO/xa, a wave, and 



a wing, referring to the often undulate wings.) 

 1. C. acaulis (Pursh) Rydb. Low (1-2 dm. high), with a short 

 erect caudex bearing leaves and peduncles at the summit, glabrous ; 

 rays and pedicels very short, making a compact cluster ; involucre none ; involu- 

 cel of a single palmately 5-7-parted bractlet ; fruit globose, 6-8 mm. in diameter ; 

 wings rather corky ; oil-tubes 4-5 in the intervals. (C. glomeratus Raf.) 

 Minn, to la., Ark., and westw. 



33. THASPIUM Nutt. MEADOW PARSNIP 



Calyx-teeth conspicuous. Fruit ovoid to oblong, slightly flattened dorsally ; 

 carpel with 3 or 4 or all the ribs strongly winged ; oil-tubes solitary in the 

 intervals, 2 on the commissure. Stylopodium wanting ; styles long. Peren- 

 nials, with ternately divided leaves (or the lower simple) and 

 broad serrate or toothed leaflets, mostly yellow flowers, and 

 all the fruit pediceled. (Name a play upon Thapsia, so called 

 from the island of Thapsus.) 



1. T. aureum Nutt. Glabrous; root-leaves mostly cordate, 

 serrate; stem-leaves simply ternate (rarely biternate); leaflets 

 ovate to lanceolate, round or tapering at base, serrate ; flowers 

 deep yellow ; fruit globose-ovoid, about 4 mm. long, all the ribs 

 equally winged. Thickets and woodlands, n. O. to Md., Ga., 

 Ark., and Wyo. Fl. summer. FIG. 836. 



Var. atropurpureum (Desr.) Coult. & Rose. Petals dark- 

 purple. N. J. to Ga. and 111. 



2. T. barbindde (Michx.) Nutt. Loosely branched, pubes- 

 cent on the joints, sometimes puberulent in the umbels ; leaves 

 l-3-ternate ; leaflets ovate to lanceolate, acute, with cuneate 

 base, coarsely cut-serrate, often ternately cleft or parted ; 

 flowers light yellow ; fruit broadly oblong, about 6 mm. long 

 and 4 mm. broad, with mostly 1 prominent wings. Banks of 

 streams, N. Y. to Minn., and southw. May-June. Var. AN- 

 GU8TiF6i.iuM Coult. & Rose, has narrower more sharply cut 

 leaflets, and fruit more or less puberulent. Pa. to Pt. Pelee, 

 Ont., and 111. 



3. T. pinnatffidum (Buckley) Gray. Resembling the last, but ptiberulent on 

 the branchlets, umbels, and fruit, with fewer leaves; leaflets \-'2-pinnatifld, the 

 lobes linear or oblong ; one or two leaves near the base often very large and long- 

 petioled ; flowers light yellow ; fruit oblong, 3-5 mm. long and 2-3 mm. broad, 

 all the ribs winged, generally three of them narrowly so. Barrens and mts., 

 Ky. to Tenn. and N. C. 



34. LOMATIUM Raf. 



Fruit flattened dorsally, oblong to nearly orbicular, laterally winged ; oil- 

 tubes usually many. Roots fusiform. Leaves dissected. Involucre none. 



836. T. aureum. 



Fruit x 4. 

 Cross-section of 



fruit x 5. 



