266 
IOWA ACADEMY OF SCIENCE Vor. XXIX, 1922 
Hypocotyl smooth, green, about one-half inch in length. Coty- 
ledons oblong, obtuse, about 1/3 of an inch long, round auricled 
to cordate at the base, somewhat thick, bright green, surface gran- 
ular above. 
Stem slightly hairy, green. First internode 1/3 to of an inch 
long; first pair of leaves opposite, lanceolate, acute, entire, midrib 
prominent, both sides bearing numerous stellate hairs. Second 
pair of leaves slightly larger, less acute, venation more distinct. 
Leaves with numerous characteristic stellate hairs above and 
below; petioles short. 
Trichomes. On both sides of the leaves are borne stellate 
hairs, of three to sixteen rays. These hairs are colorless. They 
give the leaves a scurfy appearance. 
Fig. 14. Seedling of Lycium halimiflorum 
Drawn by C. M. King 
Lycium halimiflorum. Mill. Common Matrimony Vine. 
The seeds of this plant were gathered from the vines in March, 
1922. They were planted in the greenhouse on March 17, 1922. 
April 20, cotyledons appeared ; slender lanceolate, pale below, 
green above; smooth stem slightly reddish. 
Leaves alternate, entire, crowded, oblong to spatulate — lance- 
olate. Petiole grooved. Branchlets appearing in axil of leaves. 
