Mossy Stonecrop. Sedum acre L. Seed light, reddish-yellow, somewhat glossy, obovate to oblong, pointed at the base, slightly anatropous, compressed, 6–7 mm. long. This mossy little plant is persistent when once established in sandy soil. Introduced from Europe.

ROSE FAMILY. ROSACEAE.

Fig 101. [Tall Hairy Agrimony. Agrimonia gryposepala] Wahl. Agrimonia hirsuta (Muhl.) Bicknell.

Tall Hairy Agrimony. Agrimonia gryposepala Wahl. Agrimonia hirsuta (Muhl.) Bicknell. Flowers yellow. Bur, consisting of calyx and two included fruits inside of which are two seeds; lower part of bur, top-shaped, rough, grooved, above which are numerous hooked prickles in several rows, the whole 7–10 mm. long. Native of woods in this country; seeds mottled brown, flat on one side, 2.5 by 2.5 mm. not found mixed with grass seed. Several other species are nearly as troublesome as this one. Seldom found out of the woods.

Fig 102. [Small-flowered Agrimony. Agrimonia parviflora] Ait.

Small-flowered Agrimony. Agrimonia parviflora Ait. Flowers yellow; fruit 5–6 mm. long and nearly as wide including the hooked bristles; bristles few, erect or spreading, scarcely any recurved; seeds light brown, broad oval, 2.7 by 2.5 mm. with a rounded point at the base more pronounced than in the former species. Shady places.