AMMIACEAE . 983 
Involuere and involucels wanting. Sepals 
obsolete. Petals yellow or yellowish. Fruit 
elongate: carpels 5-ribbed: oil-tubes solitary 
in the intervals and 2 on the inner side.— 
Four species, natives of the Old World 
1. F. Foeniculum (L.) Karst. Stem 5-15 
dm. tall: leaf-segments filiform or linear- 
plaees, roadsides, and fields, various prov- 
inees, Fla. to Tex., Tenn. and N. J.—Nat. 
of Eu.— (W. I.)—Sum fal —Used medici- 
nally and as a culinary 
35. PLEIOTAENIA Coult. & Rose. Perennial caulescent herbs. Leaf- 
arn vs decompound. Umbels compound. Involucres and involucels 
ing. 485 epal oven Petals yellow, 
broadest above the middle. Fruit broad: 
earpels with the dorsal and contiguous ribs 
eorky but obscure and thick, broadly winged 
j h 
wit 
oil-tubes numerous, 12-18, accompanied by 
smaller ones irregularly disposed. — One 
species. 
1. P. Nuttallii (DC.) C. & R. Stem 2-9 dm 
tall, ed meee leaf- b lear nar- 
rowly euneat mbel-rays 2-3 e 
few Un tanus short: fruit broadly 
elliptic, 6-10 mm. long (obovate and thin-winged in P. Nuttallit texana). 
olytaenia Nuttallii DC.]—Dry soil, cdi and barrens, various provinces, 
Ala. to Tex., Ia. and Mich.—Spr. 
36. ANETHUM L. Annual or biennial herbs. Leaves alternate: blades 
pa iam the Mon narrowly linear or linear-filiform. Flowers in naked 
narrow lateral wings.—Two species, natives 
of Eurasia. 
1. A. graveolens L. Plant 1 m. tall or less, 
glaucous: leaf-segments numerous: umbels 
many-flowered, the rays unequal: Rn 
minute: petals ovate to orbicular, 1 
long or less: PA iu pus bid oval olip. 
soid, 4.5—5 ong, gla — (DIL 
DILLWEED.) — — Ham ocks ad cultivated 
grounds, S D Fla. and the Ke 
of Eu.— (IV. 7.)—The aromatic fruit is d as a condiment. 
