of red clover are
half anatropous. Common and well known, possibly native to the northern
country.

GERANIUM FAMILY. GERANIACEAE.

[Illustration: Fig. 116.]

=Alfilaria. Storks-bill.= _Erodium cicutarium_ (L.) L'Her. Flowers pink;
achenes reddish brown, hairy, lance-shaped, the smaller end curved,
hard, sharp, the larger end when mature bearing an awn spirally coiled
for half its length, the sickle like apex turned to one side.

Achenes 5-6 mm. long, the coiled portion and cycle-like apex each 10-15
mm. long. True seed light brown, ovoid-lanceolate 2.5-2.7 mm. long.
Introduced from Europe.

This plant is not yet common in our state, but, judging from its
behavior in the botanic garden, it is destined soon to become a bad
weed. On the desert ranches of Arizona, Nevada and elsewhere, it
furnishes much pasture.

[Illustration: Fig. 117.]

=Cut-leaved Crane's bill.= _Geranium dissectum_ L. Seed light brown,
broadly oval or ovoid, surface deeply pitted requiring 25-30 pits to
form one row transversely about the surface. Seed scar at the larger end
from which extends a slight vertical ridge reaching nearly one-third the
length of the seed. Introduced from Europe, becoming common.

[Illustration: Fig. 118.]

=Small-flowered Crane's bill.= _Geranium pusillum_ Burm. f. Flowers
minute, pink, pubescent under a lens, slightly compressed, oval with the
apex near one side of one end, about 2 mm. long, the beak nearly twice
as long; seed reddish brown, smooth, oval, slightly flattened, 1.7-1.9
mm. long. Introduced from Europe, a bad weed when once established.

SPURGE FAMILY. EUPHORBIACEAE.

[Illustration: Fig. 119.]

=Three-Seeded Mercury.= _Acalypha Virginica_ L. Seeds 1.3-1.8 mm. long
oval or obovoid, dull, light to dark reddish brown or gray, mottled with
black spots, surface covered with numerous irregular vertical lines, a
ridge (hilum) extending from the pointed end for about one-third the
length, continuing to the broad extremity as a dark line (raphe). Native
to this country. Moist land.

[Illustration: Fig. 120.]

=Cypress Spurge.= _Euphorbia Cyparissias_ L. Seeds dull, light lead or
ash-colored, oval or oblong, circular in transverse section, 1.5-2 mm.
long, not including an irregular yellowish appendage (caruncle) at the
base, a dark verticle line (raphe) extending along one side. Introduced
from Europe. Thriving on thin sandy soil.

[Illustration: Fig. 121.]

=Toothed Spurge.= _Euphorbia dentata_