684 FLORA. 



Leaves mostly ternate; segments crenate, thickish. I. T. trifoltatum. 

 Leaves mostly biternate; segments incised or lobed, rather thin. 



Segments ovate, incised. 2. T. barbinode. 



Segments pinnatifid into oblong lobes. 3. T. pinnatifidum. 



1. Thaspium trifoliatum (L.) Britton. PURPLE MEADOW-PARSNIP. (I. F. 

 f. 2651.) Glabrous; stems 3-6 dm. high. Upper stem-leaves short-petioled, ter- 

 nate, or rarely biternate, the segments ovate or ovate-lanceolate, 25 cm. long; 

 basal leaves long-petioled, sometimes undivided; umbels 2-5 cm. broad; petals 

 dark purple; fruit nearly 4 mm. long, all the ribs usually winged. In woods, R. 

 I. to N. J., Tenn. and Mo. June-July. 



Thaspium trifoliatum aiireum (Nutt.) Britton. Flowers yellow. Range of the type. 



2. Thaspium barbinode (Michx.) Nutt. HAIRY-JOINTED MEADOW-PARSNIP. 

 (I. F. f. 2652.) Erect, 6-12 dm. high, pubescent at the joints and sometimes also 

 on the shoots and rays of the umbels. Leaves petioled, mostly bipinnate; seg- 

 ments acute, incised-serrate or cleft, 2-5 cm. long; umbels 2-5 cm. broad; flowers 

 light yellow; fruit nearly 6 mm. long, usually glabrous, 7 of the ribs commonly 

 broadly winged. Along streams, Ont. to Minn., Kans., Fla., Ky. and Ark. May- 

 June. 



Thaspium barbinode angustifblium Coult. & Rose. Leaf-segments more sharply 

 cleft into narrower lobes; fruit puberulent. Penn. to W. Va. and 111. 



3. Thaspium pinnatifidum (Buckl.) A. Gray. CUT-LEAVED MEADOW- 

 PARSNIP. (I. F. f. 2653.) Divergently branched, 6-12 dm. high, more pubescent 

 than the preceding. Leaves ternately pinnatifid into numerous oblong or linear- 

 oblong lobes, the basal ones long-petioled and very large; flowers light yellow; 

 fruit 3-5 mm. long, puberulent, all the ribs winged, but 7 of the wings broader 

 than the other 3. In woods and copses, Ky. to N. Car. and Tenn. June. 



37- CONIOSELINUM Hoffm. 



Perennial glabrous branching herbs, with decompound leaves, and compound 

 umbels of white flowers. Involucre none, or of a few short bracts. Involucels of 

 narrowly linear bracts. Calyx-teeth obsolete. Sty lopodium depressed-conic. Fruit 

 oval or oblong, dorsally flattened. Carpels with prominent approximate dorsal 

 and intermediate ribs, the lateral ones broadly winged. Oil-tubes mostly 2 or 3 in 

 the intervals, and 4-8 on the commissural side. Seed-face slightly concave, its 

 back strongly convex. [Greek, hemlock-parsley.] Besides the following, some 

 3 others occur in western N. Am. 



i. Conioselinum Chinense (L.) B.S.P. HEMLOCK-PARSLEY. (I. F. f. 

 2638.) Stem terete, 6-15 dm. high. Leaves decompound into linear-oblong acutish 

 segments; petioles sheathing; umbels 5-8 cm. broad, 9-i6-rayed; rays 3-6 cm. 

 long; pedicels slender, 4-6 mm. long; fruit broadly oval, about 4 mm. long. In 

 cold swamps, Lab. to Mass., N. Y., N. Car., Minn., Wis. and Ind. Aug.-Sept. 



38. ANGELICA L. 



Tall perennial herbs, with compound leaves and large umbels of white flowers 

 (in our species). Involucre none, or of a few small bracts. Involucels of several 

 small bracts, or sometimes wanting. Stylopodium depressed. Fruit ovate or oval, 

 dorsally compressed. Dorsal and intermediate ribs prominent, the lateral ones 

 broadly winged. Oil-tubes solitary or several in the intervals, 210 on the com- 

 missural side. [Named for its supposed healing virtues.] About 30 species, of 

 the northern hemisphere and New Zealand. Besides the following, some 13 others 

 occur in southern and western N. Am. 



Umbels glabrous, or nearly so-, leaf-segments acute or acutish. 



Oil-tubes i (rarely 2-3) in the intervals ; wings broader than the carpels. 



1. A. Curtisii. 

 Oil-tubes numerous and contiguous; wings narrower than the carpels. 



2. A. atropurpurea. 

 Umbels densely tomentose; leaf-segments obtuse. 3. A. villosa. 



i. Angelica Curtisii Buckl. CURTIS' ANGELICA. (I. F. f. 2635.) Plant 

 6-10 dm. high. Leaves biternate, the lower long-stalked, the divisions pinnate, 



