876 AMMIACEAE 
pinnately compound, oblong or oblong-ovate in outline, 5-30 cm. long ; segments ovate or 
oblong, oblique, crenate-serrate, incised or lobed : umbels very variable, 5-20 cm. broad, 
flat: rays unequal, 1.5-5 cm. long: sepals obsolete : corolla yellow: petals about 1 mm. 
long, strongly revolute: fruit obovate, oval or orbicular-oval, 5-6 mm. long. 
In waste places and fields, common throughout the United States and southern British America. 
Summer and fall. 
42. HERACLEUM L. 
Perennial caulescent herbs, with a heavy odor. Leaves alternate: blades ternately 
compound ; leaflets broad, toothed or lobed. Flowers perfect, in compound umbels. In- 
volueres and involucels of few often deciduous bracts or the former wanting. Hypanthium 
truncate, or sepals small. Petals white, broadest above the middle, those of the outer and 
inner flowers different in shape. Disk with a thick conic stylopodium. Fruit usually 
longer than broad, strongly dorsally flattened : carpels with the dorsal and contiguous ribs 
slender, and broadly winged lateral ribs, the latter nerved near the outer edge : oil-tubes 
solitary in each interval, and 2-4 in the inner face, rarely extending beyound the middle of 
the carpel. Cow PARSNIP. 
1. Heracleum lanàtum Michx. Heavy scented, more or less densely pubescent. 
Stems stout, 6-25 dm. tall, often branched : leaf-blades ample, ternately divided, 1-4 dm. 
long; segments ovate to suborbicular, lobed, sharply serrate ; petioles with conspicuous 
wing-like stipules: umbels 8-30 em. broad, flat: bracts of the involucres mainly wanting: 
rays 8-30, stout, 3-15 cm. long: pedicels 6-20 mm. long, rather slender at maturity: 
corolla white: fruit oval or obovate-oval, 8-12 mm. long, minutely pubescent, emarginate 
at the apex. 
‘In low ground, Labrador to Alaska, Georgia and California. Spring and summer. 
43. DAUCUS L. 
Annual or biennial caulescent herbs, with rough-pubescent foliage. Leaves alternate : 
blades pinnately decompound. Flowers in spreading compound umbels. Involucres and 
involucels various, or wanting : hypanthium truncate or nearly so. Sepals obsolete. Petals 
white or rarely colored, often unequal, broadest above the middle, inflexed at the apex. 
Disk often with a depressed or conic stylopodium. Fruit longer than broad, dorsally flat- 
tened : carpels with 5 low primary ribs and 4 winged secondary ribs, which are armed with 
a row of barbed bristles ; oil-tubes solitary under the secondary ribs and 2 in the inner face. 
CaRROT. 
Carpels broadest at the middle; wings divided into 12 or more bristle-like prickles. 1. D. Carota. 
Carpels broadest below the middle; wings parted into 1-8 flat prickles. 2. D. pusillus. 
1. Daucus Cardta L. Bristly-hispid. Stem erect, 4-12 dm. tall, often branched, 
channeled : leaf-segments acute or cuspidate, cleft or toothed: rays of the compound 
umbel numerous: corolla white, a few in each umbel larger than the rest, the central one 
often purple: petals very unequal, suborbicular, unequally cleft, crisped : fruit 3-4 mm. 
a LI 
Jong the carpels broadest at the middle, the Wiups Mood into 12 or more bristle-like 
prickies. 
In fields and waste places, nearly throughout North America; except the extreme north and 
south. Naturalized from Europe and Asia. Spring to fall. 
2. Daucus pusíllus Michx. Hispid. Stem erect, 1-8 dm. tall: umbels long- 
peduncled : rays several or numerous, 1-2 cm. long, nearly equal: corolla white, or the 
central one larger and purple: fruit ovoid-oblong, 3-4 mm. long, the wings parted into 
1-8 flat prickles. 
In fields and waste places, Virginia and British Columbia to Florida and California. Spring to fall. 
Series 2. GAMOPETALAE. 
Petals partly or almost wholly united, or occasionally distinct, OT 
very rarely wanting. 
Order 1. ERICALES. 
Herbs, undershrubs, shrubs, trees, or sometimes humus-plants or sapro- 
phytes. Leaves alternate, often evergreen, often reduced to scales : blades com- 
monly leathery. Flowers mainly perfect and complete, regular or nearly 80. 
