Agrostemma


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Agrostemma

 

a genus of annual herbaceous plants of the family Caryophyllaceae. The flowers have five petals and are large; there is only one flower at the end of a peduncle. The calyx has long tooth-like projections; the fruit is a capsule. There are three species in Eurasia. In the USSR there are two species. Corn cockle (A. githago) is a very hairy plant with dark pink and, sometimes, white flowers and seeds with pointed tubercles. It is a harmful weed that is found everywhere and, occasionally, in fields of rye, wheat, and oats. In the Volga region A. linicola is also found, growing as a weed in fields of flax; its corolla usually has green spots, and the seeds are smaller and have blunt tubercles or are smooth. The seeds of Agrostemma are poisonous and, when found in flour, are dangerous to both man and animals.

REFERENCE

Kott, S. A. Sornye rasteniia i bor’ba s nimi, 3rd ed. Moscow, 1961.
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Agrostemma githago, Cerastium arvense, Cerastium holosteoides, Scleranthus annuus, Silene vulgaris, Stellaria graminea, Stellaria media and Spergula arvensis to the pink family (Caryophyllaceae) as use of phase contrast microscopy would be necessary for identification of the mentioned species.
Fill them with annuals that thrive in cool weather, such as agrostemma, calendula, cretin the, forget-me-nots (above), pansies, Iceland and Shirley poppies, primroses, snapdragons, and violas.
AGROSTEMMA, or corncockle, will produce wonderful blooms from June to August.